Academic literature on the topic 'Capsulotomy'

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Journal articles on the topic "Capsulotomy"

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Tan, James C. H. "Capsulotomy." Current Opinion in Opthalmology 12, no. 1 (February 2001): 82–85. http://dx.doi.org/10.1097/00055735-200102000-00014.

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Khater, Yomna, Awad Rizk, Mohamed Saad, and Adel Zaghloul. "Effect of complete and partial capsulotomy on the renal function tests and oxidative stress markers in rats undergoing ischemia-reperfusion injury." December 2019 20, no. 4 (December 25, 2019): 29–36. http://dx.doi.org/10.35943/mvmj.2019.20.405.

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Objective: To compare the effect of complete and partial renal capsulotomy on the renal function tests and oxidative stress markers in rats undergoing ischemia-reperfusion injury. Design: Randomized controlled experimental study. Animals: A 60 Spraque-dawely rats weighing 180 ± 50 g. Procedures: Rats were divided into 3 groups in triplicate (6 each). In addition, 6 rats were subjected to blood and renal tissues sampling for estimation of normal parameters. Group 1 (Positive control): ischemia reperfusion (IR) injury; Group 2: Complete capsulotomy + I R; Group 3: Partial capsulotomy + IR. Six rats from each group were sacrified at 2, 7 and 14 days post- surgery. Results: The complete capsulotomy induced a significant decrease in the serum creatinine at 2 and 7 days post- capsulotomy in comparison with partial capsulotomy (P < 0.05), whereas at 14 days, the partial capsulotomy induced the significant decrease (P < 0.05). Complete capsulotomy showed a significant improvement in creatinine clearance in comparasion with partial capsulotomy at 2, 7 and 14 days post- surgery (p<0.05). At 2 and 7 days, BUN of IR+ Capsulotomy group showed a significant decrease (P < 0.05) compared to the other groups, while at 14 days partial capsulotomy, the serum BUN reached to the normal value. Serum sodium level showed a significant decrease (P < 0.05) at 2 days after partial capsulotomy, and at 14 days after complete capsulotomy (P < 0.05). Nitric oxide level in IR + partial capsulotomy group showed a significant decrease at 7 and 14 days (P < 0.05). Results of MDA of IR+ partial capsulotomy groups showed a significant decrease (P < 0.05) compared to the IR+ compete capsulotomy groups at 2,7 and 14 days. Conclusion and clinical relevance: The partial capsulotomy ameliorates could improve serum creatinine, BUN and could lower the oxidative stress at 14 days. Partial capsulotomy could also improve the renal tissues at both short and long-term. So this study indicates the importance of the presence of intact renal capsule for ischemic acute kidney injury.
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Swanson, Eric. "Open Capsulotomy." Plastic and Reconstructive Surgery - Global Open 4, no. 10 (October 2016): e1096. http://dx.doi.org/10.1097/gox.0000000000001096.

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Khattak, Lal Muhammad, Afzal Qadir, Umer Khan, and Muhammad Kashif Kamran. "POSTERIOR CAPSULOTOMY." Professional Medical Journal 21, no. 01 (February 10, 2014): 167–72. http://dx.doi.org/10.29309/tpmj/2014.21.01.1925.

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Objective: To study the complications of ND: YAG laser capsulotomy. Design:Clinical trial. Setting: Department of Ophthalmology KHYBER Medical University Institute ofMedical Sciences Teaching Hospital Kohat Development Authority (KDA) Kohat. Period: Jan2007 to June 2008. Material and methods: A total number of 250 patients with posterior capsularopacification were studied and look for complications after ND: YAG Laser application. Onehundred and thirty five (54% )were male and one hundred fifteen( 46%) patients were female.63% of patients had right eye involvement while 37% had left eye were involved. Patients werethoroughly examined before and after the procedure. All patients were followed for minimum sixmonths after the procedure. Data was analyzed by SPSS version 16. Chi square test wascalculated for the significance of analysis. Results: After Nd YAG laser capsulotomy there wassignificant improvement in visual acuity of my patients. There was transient rise of IOP in 25 (10%)of patients. Mild anterior uveitis in 20 (8.0%) of patients. Intra-ocular Lens pitting or cracks in 30(12%) of cases. Macular edema in 20 (8.0%) of cases. Retinal detachment in 5 (2.0%) of cases.Conclusions: Nd YAG laser is safe, effective and non-invasive procedure outdoor procedure bywhich we can get better visual outcome. Which had also some serious complication for that wehave to avoid and educate the patient about the complications of procedure.
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Cvetanovich, Gregory L., David M. Levy, Edward C. Beck, Alexander E. Weber, Benjamin D. Kuhns, Mahmoud M. Khair, and Shane J. Nho. "A T-capsulotomy provides increased hip joint visualization compared with an extended interportal capsulotomy." Journal of Hip Preservation Surgery 6, no. 2 (June 9, 2019): 157–63. http://dx.doi.org/10.1093/jhps/hnz021.

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Abstract The purpose of this study was to compare the cross-sectional area (CSA) of joint visualization between extended interportal and T-capsulotomies. Twenty fresh-frozen cadaveric hips were dissected to their capsuloligamentous complexes and fixed in a custom apparatus in neutral hip position. Ten hips underwent sequential interportal capsulotomies at lengths of 2, 4, 6, and 8 cm. Ten hips underwent sequential T-capsulotomies starting from a 4 cm interportal capsulotomy, creating a 2 cm T-capsulotomy (Half-T), and finally a 4 cm T-capsulotomy (Full-T). Following each sequential capsule change in both groups, a high-resolution digital photograph was taken to measure the visualized intra-articular cross-sectional area (CSA). Independent t-test was used to compare CSA interportal and T-capsulotomy groups. Analysis demonstrated a statistically significant increase in CSA visualization with each sequential increase in interportal capsulotomy length up to 6 cm (2cm: 0.6 ± 0.2 cm2; 4cm: 2.1 ± 0.5 cm2 (p<0.001); 6cm: 3.6 ± 1.0 cm2 (p=0.001)), and no difference at 8cm (4.2 ± 1.2 cm2 (p=0.20)). For the T-capsulotomy group the average CSA visualization significantly increased from 3.2 ± 0.9 cm2 for the Half-T to 7.1 ± 1.0 cm2 for the Full-T (p<0.001). The Half-T CSA visualization was not statistically different from the 6 cm capsulotomy (p=0.4) and the 8cm capsulotomy (p=0.05). The Full-T had significantly superior CSA visualization area as compared to the 6 cm and 8 cm interportal capsulotomies (p<0.001 for both). In conclusion, T-capsulotomy resulted in improved cross-sectional area of joint visualization compared to an extended (8cm) interportal capsulotomy in a cadaveric model. Surgeons must weigh the benefits of greater visualization from T-capsulotomy that may help to avoid residual FAI while ensuring to completely repair the capsulotomy to avoid iatrogenic instability.
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Adams, Maria L., Vasilios F. Diakonis, and Robert J. Weinstock. "Argentinian Flag Sign and Its Management during Femtosecond Laser-Assisted Cataract Surgery in a Case with Intumescent Cataracts." Case Reports in Ophthalmology 12, no. 1 (April 12, 2021): 129–33. http://dx.doi.org/10.1159/000513483.

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We describe a case of radial extension and its management during femtosecond laser-assisted cataract surgery (FLACS) in a patient with intumescent cataracts. Radial extension was observed after injection of trypan blue into the anterior chamber. Management of the extension was achieved by separation of adhesions between the incomplete capsulotomy, along with manual completion at the areas of extensions. Careful observation during FLACS capsulotomy is advised in cases of intumescent cataracts due to the release of cortex into the anterior chamber which may interfere with the delivery of the laser treatment resulting in incomplete capsulotomy patterns. Furthermore, trypan blue staining is essential to identify possible incomplete capsulotomy patterns and extensions. The Argentinian flag sign may occur after femtosecond laser-assisted capsulotomy in cases of intumescent cataracts. Proper identification of incomplete capsulotomy patterns and radial extensions should be managed with careful manual completion of the capsulotomy.
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Ye, Hehua, Jiming Zhang, and Yiyong Qian. "Long-term follow-up of neodymium:YAG laser anterior capsulotomy for the treatment of anterior capsular phimosis." Journal of International Medical Research 46, no. 9 (June 19, 2018): 3692–97. http://dx.doi.org/10.1177/0300060518777652.

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Objective To investigate the long-term safety and efficacy of Nd:YAG laser anterior capsulotomy for the treatment of anterior capsular phimosis. Methods We retrospectively analyzed a consecutive case series of Nd:YAG laser anterior capsulotomy in patients with anterior capsular phimosis, who were treated between November 2012 and April 2014. Data collected included risk factors, interval between surgery and capsulotomy, best-corrected visual acuity (BCVA), and diameter of anterior capsule opening before and after Nd:YAG laser anterior capsulotomy. Results Eleven eyes of 11 patients were included in the study. The mean follow-up time was 30.1 ± 4.5 months (range: 26–42 months). At the last follow-up, the mean diameter of the anterior capsule opening was 5.1 ± 0.2 mm, which was significantly greater than the diameter before laser capsulotomy (2.2 ± 0.8 mm). BCVA remained stable or improved in nine eyes (81.8%) following capsulotomy. No patients experienced recurrence of phimosis. Conclusions In a long-term study of >2 years, we found that Nd:YAG laser anterior capsulotomy is safe and effective for the treatment of anterior capsule phimosis.
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Karahan, Eyyup, Ibrahim Tuncer, and Mehmet Ozgur Zengin. "The Effect of ND:YAG Laser Posterior Capsulotomy Size on Refraction, Intraocular Pressure, and Macular Thickness." Journal of Ophthalmology 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/846385.

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Purpose. The aim of this study is to examine the influence of capsulotomy size on, spherical equivalent (SE), intraocular pressure (IOP), and macular thickness.Materials and Methods. Sixty-eight patients were examined preoperatively and 1, 4, and 12 weeks after Nd:YAG capsulotomy. Patients were divided into two groups based on the postoperative capsulotomy size. Changes in SE, IOP, and macular thickness were compared between two groups.Results. We found a higher hyperopic shift in large capsulotomy group. In both groups 1 and 2, IOP increased 1 week postoperatively. Intraocular pressure rise in group 2 was higher than in group 1. Both groups had increased macular thickness at 1 week postoperatively. The degree of macular thickening was similar in group 1 and group 2.Comment. Patients who underwent a larger capsulotomy have a higher hyperopic shift and IOP elevation. Rise in macular thickness was similar in large and small capsulotomy groups.
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Li, Jun, Zhe Yu, and Hui Song. "The Effect of Capsulotomy Shape on Intraocular Light-Scattering after Nd:YAG Laser Capsulotomy." Journal of Ophthalmology 2020 (March 23, 2020): 1–10. http://dx.doi.org/10.1155/2020/4153109.

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Purpose. To investigate the effects of capsulotomy shape on the visual acuity and visual quality after neodymium: yttrium aluminum garnet laser capsulotomy. Methods. In this study, a total of 42 eyes from 35 patients with posterior capsule opacification were divided into the circular and cruciate groups. The corrected distance visual acuity (CDVA), objective scatter index (OSI), modulation transfer function cutoff (MTF cutoff), Strehl ratio, and Optical Quality Analysis System values at contrasts of 100%, 20%, and 9% (OV-100, OV-20, and OV-9) were measured at precapsulotomy and 1 week and 1 month postcapsulotomy. The pseudophakic dysphotopsia questionnaire (PDQ) was used to evaluate the subjects’ satisfaction with treatment. Results. OSI values were significantly higher in the cruciate group than in the circular group at 1 week and 1 month after capsulotomy (P=0.013 and P<0.001). No significant difference was found in the OSI values between the two groups before capsulotomy (t = 0.52; P=0.61). The decrease in OSI was higher in the circular group than in the cruciate group at 1 week and 1 month after capsulotomy (P=0.036 and P=0.019). No significant differences were found in the Strehl ratio, MTF cutoff, CDVA, OV-100, OV-20, and OV-9 between the two groups at 1 week and 1 month after capsulotomy (P>0.05). The PDQ results showed that patients with circular-shaped capsulotomy complained less with intolerance of bright lights than those with cruciate-shaped capsulotomy. Conclusions. Circular-shaped capsulotomy can induce less intraocular light scattering and increase patient satisfaction.
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Mohamed, Tarek A., Wael Soliman, Dalia M. EL Sebaity, and Ahmed M. Fathalla. "Refractive Lens Exchange Combined with Primary Posterior Vitrectorhexis in Highly Myopic Patients." Journal of Ophthalmology 2017 (2017): 1–4. http://dx.doi.org/10.1155/2017/7826735.

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Purpose. To evaluate efficacy and safety of primary vitrectorhexis for posterior capsulotomy in highly myopic patients undergoing refractive lens exchange. Methods. The study is a prospective nonrandomized interventional study. The study comprised 60 eyes of 60 myopic patients. All patients underwent refractive lens exchange (RLE) and foldable IOL implantation combined with primary posterior capsulotomy. We used a 23-gauge vitrectomy probe for the creation of the posterior capsule opening. We followed the patients for one year. Results. During surgery, the IOLs remained well centered in the capsular bag after creation of the capsulotomy. Postoperatively, we did not report any complications related to lens centration or changes in the posterior capsulotomy size. No eye required YAG laser posterior capsulotomy and no cases of retinal detachment (RD) occurred during the follow-up period. Conclusion. Primary posterior vitrectorhexis during RLE is an efficient method in preventing the occurrence of posterior capsular opacification (PCO) and the need for YAG laser posterior capsulotomy with its possible complications.
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Dissertations / Theses on the topic "Capsulotomy"

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Rück, Christian. "Capsulotomy in anxiety disorders /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-769-3/.

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Giesecke, Tonia. "Ultrasonic capsulotomy in cataract surgery." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/17541.

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Bibliography: pages 65-69.
The human lens has two functions to fulfil. It has to transmit light and it has to change its shape according to the requirements of the accommodative process. These functions are determined respectively by the optical and mechanical properties of the lens. It is well documented that cataracts contribute to the gradual changes of the lens matrix properties. The fact is that loss of transparency due to cataract is a universal phenomenon occurring in 70% of the population over 70 years of age and that the only effective treatment for cataracts is its operative removal. In cataract surgery, anterior capsulotomy is a highly defined and crucial procedure. It involves creating a circular opening in the lens by incising the anterior surface of the lens capsule. This gives access to the lens cortex which is then extracted and replaced with a permanent plastic lens. The most popular capsulotomy technique involves tearing the capsule in a circular fashion using forceps. However, there are many potential problems to this technique such as: it is difficult to master, it takes a long time to perform and above all, it runs the risk of creating tears on the periphery of the opening. Since the capsule is retained post-operatively and acts as a support and centralisation of the artificial lens, it is necessary that the integrity of the capsule remain intact. Since anterior capsulotomy is an unpredictable procedure in cataract surgery, there is a definite need for a surgical device that can perform a reliable incision on the capsule. Using ultrasound to perform a capsulotomy is an innovative technique and its application has to be thoroughly investigated. The investigation includes a numerical and experimental analysis of the lens capsule. The numerical analysis shows that the lens capsule reaches states of resonance at frequencies above 80 kHz. It is at resonance that the capsule oscillations are increased and the cellular bonds are strained and broken. Attempts were made to perforate the human lens capsule using experimental piezoelectric transducer systems operating at resonance frequencies of 81.6, 106 and 187 kHz. Although each ultrasonic system was able to denature the lens cortex, a perforation of the lens capsule was only achieved at a frequency of 81.6 kHz. However, the perforation was irregular and exhibited several tears. This result is not acceptable as one of the main design requirements is to produce a capsulotomy that has a smooth and continuous margin. The amplitudes for the higher frequencies were inadequate to strain and break the capsule, even when the crystals were driven at their maximum voltage of 400 Volts. The present investigation proves that it is highly unlikely that an ultrasonic tool can be designed within a safe margin of frequencies and voltages. As long as no other alternative method is devised, surgeons will have to contend with the occasional complication of radial tears that occur during anterior capsulotomy using current anterior capsulotomy techniques.
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Ranta, Päivi. "Retinal detachment after neodymium : yttrium-aluminum-garnet laser posterior capsulotomy." Helsinki : University of Helsinki, 2002. http://ethesis.helsinki.fi/julkaisut/laa/kliin/vk/ranta2/.

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秦達念 and Da-nian Qin. "The effects of testicular capsulotomy on male fertility in the rat." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31235244.

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Qin, Da-nian. "The effects of testicular capsulotomy on male fertility in the rat /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17095074.

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Paiva, Raquel Reis de. "Alterações na personalidade após procedimento de capsulotomia ventral anterior por raios gama em pacientes com transtorno obsessivo-compulsivo (TOC) refratário." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5142/tde-27102017-103707/.

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O Transtorno Obsessivo-Compulsivo (TOC) consiste em uma doença crônica caracterizada pela presença de obsessões e/ou compulsões. Em geral, cerca de 20% são pacientes considerados refratários por não responder a múltiplas intervenções de tratamento de primeira linha. Para esses pacientes, os tratamentos cirúrgicos são opções a serem consideradas. Dentre esses, destaca-se a capsulotomia ventral anterior por raios gama (radiocirurgia Gamma-Knife). Estudos clínicos e neuropsicológicos com a radiocirurgia Gamma-Knife em pacientes com TOC demonstraram eficácia e segurança desse procedimento. No entanto, não foram encontrados na literatura estudos de personalidade com esse tratamento no TOC. Portanto, o objetivo deste estudo foi investigar mudanças de personalidade após um ano da capsulotomia ventral anterior por raios gama em pacientes com TOC refratário. A avaliação da personalidade foi feita através do Inventário de Personalidade NEO revisado (NEO PI-R) e do Inventário de Temperamento e Caráter de Cloninger (TCI) em quatorze pacientes com TOC refratário antes e após um ano da radiocirurgia Gamma-Knife. Comparações dos dados de personalidade entre pacientes respondedores (n=5) ao tratamento e não respondedores (n=9) e análises de regressão com método stepwise bidirecional de seleção de variáveis foram realizadas. Como resultado principal, não foi encontrada piora de personalidade após a radiocirurgia. Ao contrário, encontrou-se uma tendência de diminuição dos escores de Neuroticismo e Persistência e, em geral, os dados dos pacientes se aproximaram dos dados dos controles. No que diz respeito aos respondedores, houve uma diminuição nos escores da dimensão de Neuroticismo e um aumento da dimensão de Extroversão significativos após um ano de tratamento, enquanto que os pacientes não respondedores não tiveram mudanças em quesito de personalidade. Predição de percentual de redução dos escores de YBOCS foi encontrada para as escalas de TCI, tendo contribuição do percentual de mudança das dimensões de Busca de novidades, Persistência, Autodirecionamento e Cooperatividade foram significantes em predizer o percentual de mudança de YBOCS. Busca de novidades, Dependência de Gratificação, Autodirecionamento e Cooperatividade foram significantes em predizer o percentual de mudança de funcionamento global. Essa melhora no funcionamento global depois da radiocirurgia nos pacientes com TOC pode estar relacionada ao aumento de motivação para começar e completar tarefas, perseguir objetivos e engajar-se com terceiros. Contudo, conclui-se que o procedimento de capsulotomia ventral anterior por raios gama para o tratamento de TOC não é somente seguro em termos de mudanças de personalidade, mas também pode melhorar algumas de suas dimensões
Obsessive-Compulsive Disorder (OCD) is a chronic disease characterized by the presence of obsessions and/or compulsions. In general, about 20% of OCD patients are considered refractory for not responding to multiple first-line treatment interventions. Performing surgical procedures such as gamma ventral capsulotomy (GVC) is an option to be considered for the treatment of refractory OCD patients. Clinical and neuropsychological studies with GVC in OCD patients have demonstrated the efficacy and safety oh this procedure efficacy and safety. However, personality studies with this treatment in OCD are not found in literature. The objective of this study was to investigate personality changes after one year of GVC in refractory OCD patients. Personality assessment was performed using the Revised NEO Personality Inventory (NEO PI-R) and the Cloninger\'s Temperament and Character Inventory (TCI) in fourteen refractory OCD patients before and one year after GVC. Personality data comparisons between treatment responders (n = 5) and non-responders (n = 9), and also linear regressions using a stepwise bidirectional elimination approach for variables selection were performed. As the main result, no impairment in personality was found after GVC. On the contrary, there was a decrease tendency in Neuroticism and Persistence scores and in general, patients\' data approached to controls\'. Patients responders presented a reduction in Neuroticism scores and an increase in Extraversion scores, whereas non-responders did not change personality. Persistence, Selfdirectedness and Cooperativeness were significant in predicting percentage of change in YBOCS scores. Novelty Seeking, Reward Dependence, Selfdirectedness and Cooperativeness were significant in predicting the percentage of improvement in global functioning. This improvement in global functioning after GVC could be thought of as relating to better motivation to begin tasks, pursue goals, complete tasks, and engage with others. In conclusion, GVC procedure for OCD treatment is not only safe in terms of personality changes, but it can also improve some of its dimensions
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Elgohary, Mostafa A. "Posterior capsular opacification : incidence and factors influencing the rate of Nd:YAG capsulotomy in diabetic and uveitic patients and after multifocal intraocular lens implantation." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1444717/.

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This thesis examined the incidence and factors affecting the rate of posterior capsular opacification (PCO), the most common complication of cataract surgery, in diabetic and uveitic patients and in patients with multifocal intraocular lenses (IOLs). These patients arc particularly sensitive to PCO development because of the risks associated with Nd:YAG capsulotomy in the former two groups and the potential effect on visual function in the latter group. PCO rate was estimated both retrospectively, using Nd:YAG capsulotomy as a surrogate measure of clinically significant PCO, as well as prospectively using clinical and imaging methods. Diabetic patients were found to have a lower incidence and risk of Nd:YAG capsulotomy than non-diabetic patients within 4 years after surgery. Young age, postoperative inflammation, pars plana vitrectomy and, in comparison to 3-piece silicone IOL, polymethylmethacrylate (PMMA) and plate-haptie silicone IOLs were associated with increased risk of Nd:YAG capsulotomy. In subgroup analysis, male gender was found to be a risk factor in the non-diabetic group and the duration and type of diabetes and diabetic retinopathy grade were not risk factors. In a prospective randomised trial, hydrophobic acrylic IOLs, while associated with a higher flare value within the early postoperative period, had a significantly lower rate of PCO development than plate-haptic silicone IOLs after 6 months and 1 year in diabetic patients. Optical coherence tomography revealed the development of a characteristic mid-peripheral apposition between the optic and the posterior capsule with hydrophobic acrylic IOLs both early and late after surgery, and the lack thereof with plate-haptic silicone IOLs, which is consistent with and explains the difference in PCO rate between the two IOLs. In uveitic patients, the incidence of Nd:YAG capsulotomy was higher within the first two years after surgery than in non-uveitic patients, although the presence of uveitis was not an independent risk factor for an increased rate of Nd:YAG capsulotomy. The use of preoperative systemic steroids reduced the risk of Nd:YAG capsulotomy and, in comparison to PMMA IOLs, silicone IOLs reduced the risk of Nd:YAG capsulotomy while hydrophilic acrylic IOLs and young age increased it. In patients with multifocal IOLs, within 4 years of follow-up the incidence of PCO and Nd:YAG capsulotomy were similar to those reported with monofocal implants and young age was a risk factor for the development of PCO. Patients with multifocal IOLs present for Nd:YAG capsulotomy with earlier loss of high and low-contrast acuity, which could increase the rate of Nd:YAG capsulotomy in these patients.
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Leie, Murilo Anderson. "Avaliação dos resultados a longo prazo da capsulotomia posterior do joelho realizada em pacientes com síndrome patelar do flexo mínimo." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/159638.

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Introdução: a ausência de extensão completa do joelho é uma condição limitante que algumas vezes precisa ser tratada invasivamente através da realização da capsulotomia posterior do joelho, uma vez que medidas conservadoras tenham sido esgotadas previamente. No entanto, mesmo com a literatura vigente, ainda não está claro se o procedimento para aquisição de extensão do membro inferior está associado á melhora funcional de pacientes com contratura em flexão do joelho e queixas de dor anterior, bem como se este ganho de extensão pode ser mantido ao longo do tempo. Métodos: nós conduzimos um estudo de coorte retrospectivo de 21 pacientes com contratura em flexão mínima do joelho os quais foram submetidos à capsulotomia posterior do joelho por técnica aberta entre 1990 e 2010. Após 9.19 ± 6.68 anos de follow-up, os níveis funcionais do joelho e média de ângulo de contratura em flexão foram comparados com os dados pré-operatórios e a taxa de recorrência pôde ser estimada. Complicações investigadas incluíram instabilidade do joelho secundária ao procedimento e danos neurovasculares. Resultados: pré-operatoriamente, todos os pacientes (100%) apresentavam scores funcionais de Lysholm classificados como regular ou ruim (média absoluta do score 58.66 ± 13.87, 95%CI 52.35–64.98), e 15 pacientes (72%) apresentaram melhora funcional, com scores bom ou excelente (média de score de Lysholm 87.61 ± 8.81, 95%CI 83.60–91.63) após o período de follow-up. A média pré-operatória do ângulo de flexão do joelho foi de 25.04 ± 9.15 graus (95%CI 20.88–29.21) e diminuiu para 4.28 ± 4.18 graus (95CI% 2.38 – 6.19). Nenhum paciente apresentou complicações relacionadas ao procedimento Conclusão: baseado em nossos resultados, nós concluímos que a capsulotomia posterior do joelho parece ser um procedimento seguro e efetivo para tratar adequadamente pacientes com joelhos dolorosos secundários a contraturas em flexão, com uma baixa taxa de recorrência mesmo após 9.19 anos em média de seguimento.
Background: lack of full extension of the knee is a disabling condition that sometimes needs to be treated invasively by a posterior capsulotomy of the knee, since conservative treatments have been exhaustively attempted. However, it is not clear if the procedure is able to improve anterior symptoms on the knee of patients with flexion contracture and if the full extension acquired can be kept throughout long-time follow-up. Methods: we conducted a retrospective cohort study of 21 patients diagnosed with minimal flexion contracture of the knee who underwent open posterior capsulotomy between 1990 and 2010. After 9.19 ± 6.68 years of follow-up, knee function and mean angle of fixed knee flexion were compared to baseline data and the recurrence rate was estimated. Complications investigated included knee instability and neurovascular damages. Results: all patients (100%) presented with a preoperative Lysholm score classified as poor or fair (mean, 58.66 ± 13.87, 95%CI 52.35–64.98), but 15 patients (72%) experienced an improvement to good or excellent scores (mean, 87.61 ± 8.81, 95%CI 83.60–91.63) after long-time follow-up. The mean preoperative angle of fixed flexion was 25.04 ± 9.15 degrees (95%CI 20.88–29.21) and it decreased to 4.28 ± 4.18 degrees (95CI% 2.38 – 6.19, after the follow-up. Conclusion: Based on these results, we conclude that posterior capsulotomy of the knee proved to be a safe and effective procedure to treat properly patients with painful knees secondary to lack of full extension with a low rate of recurrence even after a long-term follow-up.
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Senne, Firmani Mello Bento de. "Capsulotomia posterior unilateral : alterações de função e capacidade visual na vida diaria." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/311234.

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Orientador: Edmea Rita Temporini Nastari
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Realizou-se um estudo transversal com intervenção com os objetivos de identificar a influência da capsulotomia posterior unilateral com Neodímio: Ítrio-Alumínio-Granada (Nd:YAG) laser na função visual e em relação à percepção de dificuldades nas atividades diárias, e verificar a relação entre as medidas subjetivas e objetivas da função visual após a intervenção. A amostra, prontamente acessível, foi composta por 48 pacientes entre 40 e 80 anos, média de 68 anos, mediana de 70 anos, pseudofácicos uni ou bilaterais, com opacificação de cápsula posterior e acuidade visual menor ou igual a 0,30 (logMAR) em um olho, atendidos consecutivamente em um hospital universitário no Brasil. Todos os pacientes foram submetidos a capsulotomia posterior com Nd:YAG laser. Um questionário, elaborado a partir de estudo exploratório, foi aplicado antes e depois da intervenção. Após a capsulotomia posterior, a acuidade visual e a estereoacuidade melhoraram significativamente. Na percepção dos sujeitos, houve redução das dificuldades relacionadas às atividades diárias ligadas à visão, exceto passar roupas, tomar banho sem ajuda e pentear os cabelos. As medidas objetivas e a auto-avaliação da visão apresentaram congruência de resultados e todos os pacientes declararam ter valido a pena a realização do procedimento laser
Abstract: An interventional survey was conducted to assess the influence of Neodymium: Yttrium-Aluminium-Garnet (Nd: YAG) laser unilateral posterior capsulotomy on visual function and perception of difficulties with vision-related daily life activities, and to verify the association between objective and subjective measures of visual function after intervention. The readily accessible sample comprised 48 patients aged between 40 and 80 years, with uni- or bilateral pseudophakia, posterior capsule opacification and visual acuity equal to or less than 0,30 (logMAR) in one eye, consecutively seen at a Brazilian university hospital. All the patients were submitted to posterior capsulotomy by Nd:YAG laser. Before and after intervention, patients were asked to answer a questionnaire developed from data obtained in an exploratory study. After posterior capsulotomy, visual acuity and stereoacuity improved significantly. According to the subjects' perception, they found less difficulty in vision-related daily activities, except for ironing, bathing without help and combing the hair. Objective measures of visual function and self-rated visual function showed congruent results after intervention. All the subjects interviewed stated that the posterior capsulotomy procedure had been ¿worthwhile¿
Doutorado
Oftalmologia
Doutor em Ciências Médicas
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Senne, Firmani Mello Bento de. "Melhora da estereoacuidade : uma indicação para capsulotomia unilateral : desenvolvimento de um modelo semiologico." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/311194.

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Orientador : Marilisa Nano Costa
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Este estudo foi realizado com o objetivo de desenvolver um modelo semiológico para determinar se a estereoacuidade medida pelo teste de Titmus pode ser um indicador objetivo de melhora funcional após a capsulotomia em casos unilaterais de opacificação de cápsula cristaliniana posterior. Catorze pacientes com opacificação de cápsula posterior unilateral pós-facectomia com implantação de lente intra-ocular (6 pacientes fácicos e 8 pseudofácicos no olho contralateral) foram estudados prospectivamente. A acuidade visual variou de 0,05 a 0,5 no olho com opacificação de cápsula posterior e de 0,7 a 1,0 no olho contralateral (sem opacificação de cápsula posterior). Todos os pacientes foram submetidos a capsulotomia posterior com Neodymium: Yttrium-Aluminum-Garnet (Nd:YAG) laser. A estereoacuidade pré e pós-capsulotomia foi medida pelo teste de Titmus. A análise estatística foi efetuada usandose testes não paramétricos (Wilcoxon e Spearman). Houve melhora significativa da estereoacuidade após a capsulotomia posterior com Nd:YAG laser nos pacientes da população estudada. O trabalho revelou dados preliminares para análise do efeito da capsulotomia posterior em casos de opacificação de cápsula unilateral na estereoacuidade, demonstrando que a catarata secundária reduz a visão estereoscópica e concluindo que a estereoacuidade, ao lado da acuidade visual, pode ser um parâmetro objetivo de indicação de capsulotomia em casos unilaterais de opacificação da cápsula posterior
Abstract: This study was designed to develop a semiologic model to determine whether stereoacuity is an objective mdicator of functional improvement following unilateral secondary capsulotomy. Fourteen patients with unilateral posterior capsule opacification post cataract surgery with implantation of intraocular lens (6 phakic, 8pseudophakic m contralateral eye) were studied prospectively. Visual acuity ranged from 0,05 to 0,5 m the eye with posterior capsule opacification and ranged from 0,7 to 1,0m contralateral eye. All patients had Neodymium: Yttrium-Alummum-Garnet (Nd:YAG) laser capsulotomy. Stereoacuity was measured before and afier capsulotmy by Titmus testo Nonparametric Spearman rank correlation and Wilcoxon rank tests were used for analysis. Stereoacuity improved afier capsulotomy m alI patients. The visual acuity m the eye with posterior capsule opacification did not correlate with stereoacuity afier capsulotomy. This study demonstrated that posterior capsule opacification reduces the depth vision and concluded that stereoacuity may provide an mdication for unilateral capsulotomy
Mestrado
Oftalmologia
Mestre em Ciências Médicas
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Books on the topic "Capsulotomy"

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Cleary, Georgia, and David Spalton. Cataract. Oxford University Press, 2012. http://dx.doi.org/10.1093/med/9780199237593.003.0006.

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The chapter begins by discussing lens anatomy and embryology, before covering the key areas of clinical knowledge, namely acquired cataract, clinical evaluation of acquired cataract, treatment for acquired cataract, intraoperative complications of cataract surgery, infectious postoperative complications of cataract surgery, non-infectious postoperative complications of cataract surgery, congenital cataract, management of congenital cataract, and lens dislocation. Practical skills are then covered, including biometry, local anaesthesia, operating microscope and phacodynamics, intraocular lenses, and Nd:YAG laser capsulotomy. The chapter concludes with three case-based discussions, on age-related cataract, postoperative endophthalmitis, and posterior capsular opacification.
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Cleary, Georgia, and Allon Barsam. Cataract. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199672516.003.0003.

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This chapter focuses on cataract, which is the pathological opacification of the crystalline lens. Cataract is an important cause of visual impairment and blindness worldwide, in both developed and developing countries. Fortunately, acquired cataract is a reversible cause of visual impairment and, in developed countries, cataract surgery is the most commonly performed elective surgical procedure. This chapter outlines lens anatomy and embryology, along with clinical knowledge areas that include acquired cataract (clinical evaluation and treatment), intraoperative and post-operative (infectious and non-infectious) complications of cataract surgery, and lens dislocation. Practical skills, including biometry, local anaesthesia, implantation of intraocular lenses, and Nd:YAG laser capsulotomy, are also discussed.
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Book chapters on the topic "Capsulotomy"

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Keintzel, Maike, and Thomas Kohnen. "Capsulotomy." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35951-4_460-5.

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Keintzel, Maike, and Thomas Kohnen. "Capsulotomy." In Encyclopedia of Ophthalmology, 313–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_460.

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O’Meara, Madeleine C., Jonathan H. Talamo, Neil J. Friedman, and Douglas D. Koch. "Laser Capsulotomy." In Textbook of Refractive Laser Assisted Cataract Surgery (ReLACS), 79–99. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-1010-2_7.

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Nischal, Ken K. "Anterior Capsulotomy." In Congenital Cataract, 75–82. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27848-3_6.

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Keintzel, Maike, and Thomas Kohnen. "Anterior Capsulotomy Techniques." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35951-4_451-4.

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Keintzel, Maike, and Thomas Kohnen. "Anterior Capsulotomy Techniques." In Encyclopedia of Ophthalmology, 134–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_451.

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Mindus, Per. "Present-Day Indications for Capsulotomy." In Advances in Stereotactic and Functional Neurosurgery 10, 29–33. Vienna: Springer Vienna, 1993. http://dx.doi.org/10.1007/978-3-7091-9297-9_6.

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Field, Richard E., Francesc Malagelada, and Francesco Strambi. "Fluid Mechanics, Pre- and Post-Capsulotomy." In Hip Joint Restoration, 935–40. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4614-0694-5_101.

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Packard, Richard. "The Evolution of the Anterior Capsulotomy." In Innovative Implantation Technique, 61–75. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-03086-5_7.

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Nattis, Alanna S., and Gerald Zaidman. "Surgical Posterior Capsulotomy with Anterior Vitrectomy." In Operative Dictations in Ophthalmology, 373–75. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-45495-5_86.

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Conference papers on the topic "Capsulotomy"

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Barak, Adiel, Tova Ma-Naim, Mordechai Rosner, Ophir Eyal, and Michael Belkin. "Anterior capsulotomy using the CO 2 laser." In BiOS '98 International Biomedical Optics Symposium, edited by Pascal O. Rol, Karen M. Joos, and Fabrice Manns. SPIE, 1998. http://dx.doi.org/10.1117/12.309432.

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Li, Yong-Nian, Xiao-Wu Ni, Jian Lu, and Anzhi He. "Myosis in the operation of the YAG laser anterior capsulotomy." In OE/LASE '92, edited by Steven L. Jacques. SPIE, 1992. http://dx.doi.org/10.1117/12.137478.

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Li, Yong-Nian, Xiao-Wu Ni, Jian Lu, and Anzhi He. "Study of myosis in operation of the Nd:YAG laser anterior capsulotomy." In International Conference on Photodynamic Therapy and Laser Medicine, edited by Junheng Li. SPIE, 1993. http://dx.doi.org/10.1117/12.137042.

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Cai, Jiping, Ruili Wei, Xiaoye Ma, Huang Zhu, You Li, Jinwei Cheng, and Feng Jiang. "Prophylactic use of timolol maleate to prevent intraocular pressure elevation after Nd-YAG laser posterior capsulotomy." In 2004 Shanghai international Conference on Laser Medicine and Surgery, edited by Jing Zhu. SPIE, 2005. http://dx.doi.org/10.1117/12.639340.

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Zakani, Sima, Erin J. Smith, Manuela Kunz, Gavin C. A. Wood, John Rudan, and Randy E. Ellis. "Tracking Translations in the Human Hip." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87882.

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Translations of the femoral head with respect to the acetabular cup, in non-impinging zones, was investigated using surgical navigation methods. An ex-vivo study was conducted on five fresh-frozen human cadaver pelvises in distinct dissection states. Each specimen underwent a series of motions that included combinations of abduction/adduction, flexion/extension and internal/external rotations, repeated in four soft-tissue states: soft tissues intact; partially dissected with capsule intact; Z-shaped capsulotomy; and fully dissected and disarticulated. The data showed significant increases of excursions (p<0.05) between the first three soft tissue states. The findings supported the recently proposed model of aspherical hip motion, and imply that the femoral head translated before and after impingement. The results bring into question many accepted ideas in hip morphology, kinematics and surgical planning.
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Reports on the topic "Capsulotomy"

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Tan, Yuan, Wei Li, and Zhenzhen Liu. Refraction shift after Nd: YAG posterior capsulotomy in pseudophakic eyes: a protocol for a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, February 2021. http://dx.doi.org/10.37766/inplasy2021.2.0059.

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