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Journal articles on the topic 'Stability of refraction'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Lee, Ji Hye, and Yang Kyung Cho. "Assessing Refractive Stability after Cataract Surgery in Axial Myopes: One-piece and Three-piece Intraocular Lenses." Journal of the Korean Ophthalmological Society 63, no. 2 (2022): 150–59. http://dx.doi.org/10.3341/jkos.2022.63.2.150.

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Purpose: To assess the refractive changes and stability after cataract surgery with insertion of three different intraocular lenses in axial myopes.Methods: A retrospective analysis was performed with 44 eyes of normal axial length (22.0 mm < axial length ≤ 24.5 mm) and 49 eyes of long axial length (24.5 mm < axial length) in patients who underwent phacoemulsification and posterior chamber lens insertion. Automated keratometry examination and refraction were performed using an autorefractor keratometer; A-scan ultrasound was used to calculate target refraction. One-piece intraocular lens

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2

Quito, Carmina Franz G., Archimedes Lee D. Agahan, and Raymond P. Evangelista. "Long-Term Followup of Laser In Situ Keratomileusis for Hyperopia Using a 213 nm Wavelength Solid-State Laser." ISRN Ophthalmology 2013 (March 3, 2013): 1–7. http://dx.doi.org/10.1155/2013/276984.

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Purpose. To evaluate the long-term efficacy, accuracy, stability, and safety of hyperopic laser in situ keratomileusis (LASIK) using a 213 nm wavelength solid-state laser. Methods. This prospective noncomparative case series consisted of 34 eyes of 17 patients which underwent hyperopic LASIK using a 213 nm solid-state laser (Pulzar Z1, CustomVis) at an outpatient refractive surgery center in Manila, Philippines. The preoperative and postoperative examinations included uncorrected distance visual acuity (UDVA), subjective manifest refraction, corrected distance visual acuity (CDVA), cycloplegic

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3

Dietze, Holger, and Marina Kruse. "Postoperative Stabilität der Refraktion nach Katarakt-Operation." Optometry & Contact Lenses 1, no. 1 (2021): 14–20. http://dx.doi.org/10.54352/dozv.oeec9554.

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Aim. The goal of the present study is to determine how much time must pass after a cataract surgery with no complications to achieve a sufficiently stable refraction. Subjects and methods. We measured the postoperative refraction of 61 pseudophakic subjects (mean age: 74.32 ± 7.11 years) five times with an autorefractor. The subjects had undergone unilateral cataract surgery and the time intervals for the measurement went from one day to eight weeks after the operation. In order to obtain the spherical equiva- lent (SE) and the cylinder power, the difference from each measurement and the last

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4

Huang, Yu-Yan, Guo-Fu Chen, Duo Peng, Miao-Zhen Pan, Ji-Bo Zhou, and Jia Qu. "Refractive status and histological changes after posterior scleral reinforcement in guinea pig." International Journal of Ophthalmology 18, no. 3 (2025): 375–82. https://doi.org/10.18240/ijo.2025.03.01.

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AIM: To investigate the refractive and the histological changes in guinea pig eyes after posterior scleral reinforcement with scleral allografts. METHODS: Four-week-old guinea pigs were implanted with scleral allografts, and the changes of refraction, corneal curvature and axis length were monitored for 51d. The effects of methylprednisolone (MPS) on refraction parameters were also evaluated. And the microstructure and ultra-microstructure of eyes were observed on the 9d and 51d after operation. Repeated-measures analysis of variance and one-way analysis of variance were used. RESULTS: The ref

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5

Lalramhluni, Regina, Soveeta Rath, Ankita Shrivastav, et al. "Refractive and Visual Outcomes after Scleral Fixated Intraocular Lens Implantation in Children with Ectopia Lentis." Nepalese Journal of Ophthalmology 12, no. 1 (2020): 75–82. http://dx.doi.org/10.3126/nepjoph.v12i1.22252.

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Introduction: This study was conducted to report the refractive and visual outcome after Scleral Fixated Intraocular Lens (SFIOL) implantation in children with nontraumatic ectopia lentis. Methods: Retrospective review of the medical records of 25 eyes of 15 patients who underwent SFIOL implantation in children with non-traumatic ectopia lentis. Results: The mean best corrected visual acuity (BCVA) before SFIOL implantation was 1.07 ± 0.9 logMar units [median: 0.9, Interquartile range (ΙQR): 0.415 to 1.555] which improved to 0.41 ± 0.33 logMar units (median: 0.22, ΙQR: 0.180 to 1.5

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6

Yingmei, Jiang, Jin Tao, Yang Xueqi, et al. "An Analysis on the Change Rule of Eyeball's Biological Parameters of Different Types in the Refraction State and Vision Before and After Refraction." Journal of Medical Imaging and Health Informatics 8, no. 9 (2018): 1881–85. http://dx.doi.org/10.1166/jmihi.2018.2532.

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The ametropia is the most widespread eye disease for the humans. Wherein, the myopia is the commonest ophthalmological reason influencing the distant vision. The excimer laser corneal refractive surgery has always been an operation mode most widely used in myopic correction operations for a number of years. The laser assisted in-situ keratomi (LASIK) mainly transforms the frontal surface appearance of the cornea to change the corneal refraction power, and its correction effect is influenced by a great many factors such as regression and hydration of cornea. Thus, a lot of surgeons would combin

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7

Huang, Chien Jung, Kuo Chien Liao, and Yan Kuin Su. "Structure Property of Titanium Dioxide Thin Films in Sintered Temperature by the Sol-Gel Method." Key Engineering Materials 368-372 (February 2008): 1465–67. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.1465.

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Titanium dioxide (TiO2) thin film on glass substrate is fabricated by sol-gel method. The TiO2 film is sintered at various temperatures for investigation on the refraction index and crystallization characteristic. The lower refractive index of the TiO2 thin film is 1.89 when the sintering is performed at the low temperature of 200°C and the thickness is 448 nm. However, the higher refractive index of 2.55 and chemical stability of the TiO2 film in rutile phase are obtained via sintering temperature at 700°C.

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8

Sayegh, Fouad N. "Age and Refraction in 46,000 Patients as a Potential Predictor of Refractive Stability After Refractive Surgery." Journal of Refractive Surgery 25, no. 8 (2009): 747–51. http://dx.doi.org/10.3928/1081597x-20090707-10.

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9

Hu, Dian, and Wancheng Sheng. "Stability of E-H type regular shock refraction." Journal of Mathematical Physics 59, no. 11 (2018): 111504. http://dx.doi.org/10.1063/1.5054686.

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10

Willcocks, Simon, Derrick Hasterok, and Samuel Jennings. "Thermal refraction: implications for subglacial heat flux." Journal of Glaciology 67, no. 265 (2021): 875–84. http://dx.doi.org/10.1017/jog.2021.38.

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AbstractIn this study, we explore small-scale (~1 to 20 km) thermal-refractive effects on basal geothermal heat flux (BGHF) at subglacial boundaries resulting from lateral thermal conductivity contrasts associated with subglacial topography and geologic contacts. We construct a series of two-dimensional, conductive, steady-state models that exclude many of the complexities of ice sheets in order to demonstrate the effect of thermal refraction. We show that heat can preferentially flow into or around a subglacial valley depending on the thermal conductivity contrast with underlying bedrock, wit

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11

Buhl, Lara, Julian Langer, Franziska Kruse, et al. "Comparison of Refractive Outcomes After Phacoemulsification and Combined 25-Gauge Phacovitrectomy with Implantation of Plate-Haptic Toric Intraocular Lenses." Journal of Clinical Medicine 13, no. 22 (2024): 6861. http://dx.doi.org/10.3390/jcm13226861.

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Objectives: To compare intraocular lens (IOL) position and refractive outcomes between eyes that underwent sole phacoemulsification with those that underwent combined 25-gauge phacovitrectomy with a plate-haptic toric IOL implantation. Methods: This retrospective study included 60 eyes of 60 patients. Of these, 30 eyes underwent 25-gauge phacovitrectomy, while the other 30 eyes received phacoemulsification alone. In both groups, a plate-haptic toric intraocular lens (AT Torbi 709M, Carl Zeiss Meditec AG) was implanted. The main outcome measures were the refractive outcome, the refraction predi

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Godiwalla, Roxana Y., M. Teresa Magone, Sandor B. Kaupp, Hoon Jung, and John B. Cason. "Long-Term Outcomes of Refractive Surgery Performed During the Military." Military Medicine 184, no. 11-12 (2019): e808-e812. http://dx.doi.org/10.1093/milmed/usz096.

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Abstract Introduction To evaluate the long-term refractive results of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) performed by the military in a veteran population. Materials and Methods Three Department of Veterans Affairs (VA) hospital sites (Puget Sound, Buffalo, and Washington D.C.) obtained IRB approval for this multi-center study. Comprehensive ophthalmologic assessment including refraction and keratometry were obtained at the time of the long-term VA examination and compared to the patients’ postoperative military records. Results Eighty patients (160 eyes

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13

Ng-Darjuan, Maya Fe, Raymond P. Evangelista, and Archimedes Lee D. Agahan. "Photorefractive Keratectomy with Adjunctive Mitomycin C for Residual Error after Laser-Assisted In Situ Keratomileusis Using the Pulzar 213 nm Solid-State Laser: Early Results." ISRN Ophthalmology 2013 (September 28, 2013): 1–6. http://dx.doi.org/10.1155/2013/815840.

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Purpose. To evaluate the accuracy, efficacy, stability, and safety of photorefractive keratectomy (PRK) enhancement using the Pulzar 213 nm solid-state laser (SSL) with adjunctive Mitomycin C in eyes previously treated with laser assisted in situ keratomileusis (LASIK) with residual error of refraction. Methods. This is a prospective noncomparative case series of 16 eyes of 12 patients who underwent PRK for residual refractive error after primary LASIK. Mitomycin C 0.02% was used after the PRK to prevent haze formation. Outcomes measured were pre- and postoperative manifest refraction spherica

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14

Mrugacz, Małgorzata, Mateusz Olszewski, Magdalena Pony-Uram, Jacek Brymerski, and Anna Bryl. "Assessment of the Refractive Error and Stabilisation of Refraction after Cataract Surgery in Relation to the Length of the Eyeball." Journal of Clinical Medicine 11, no. 18 (2022): 5447. http://dx.doi.org/10.3390/jcm11185447.

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The aim of this study was to analyse the changes in refraction, depending on the length of the eyeball, in patients who had undergone cataract surgery using the phacoemulsification method and to assess the stability of refraction. A total of 90 patients (46 to 85 years of age) took part in the study and were divided into three groups: emmetropic, hypermetropic, and myopic. Two types of intraocular lenses were used: Bausch (Akreos AO) and Rayner (C-flex). In conclusion, stabilization of refraction was achieved in the third week in 91% of the emmetropic, 77% of the myopic, and 46% of the hyperme

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15

Oliveira, Miguel, Rui Fuste, Javier Gene-Morales, Andrés Gené-Sampedro, and Jorge Jorge. "Relationship Between Refractive Error, Visual Acuity, and Postural Stability in Elite Football Players." Applied Sciences 15, no. 10 (2025): 5437. https://doi.org/10.3390/app15105437.

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This study aimed to investigate the relationship between visual system parameters (visual acuity and refractive error) and postural balance under controlled conditions in elite football players. Visual acuity (monocular and binocular) and refractive errors were assessed in 34 male athletes using retinoscopy and subjective refraction. Postural stability was assessed with the Cyber-Sabots™ platform, recording the center of pressure (CoP) metrics, including sway amplitude, velocity, and distribution area. Visual and postural parameter correlations were assessed using Pearson’s test (p < 0.05).

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16

Kremer, Frederic B., and Robert A. Steer. "Stability of Refraction Following Radial Keratotomy over 4 Years." Journal of Refractive Surgery 2, no. 5 (1986): 217–20. http://dx.doi.org/10.3928/1081-597x-19860901-06.

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17

Goosey, John D., Thomas C. Prager, Claire B. Goosey, Mark E. Allison, and Thomas L. Marvelli. "Stability of Refraction During Two Years After Myopic Epikeratoplasty." Journal of Refractive Surgery 6, no. 1 (1990): 4–8. http://dx.doi.org/10.3928/1081-597x-19900101-03.

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18

Chen, Shuxing, and Beixiang Fang. "Stability of reflection and refraction of shocks on interface." Journal of Differential Equations 244, no. 8 (2008): 1946–84. http://dx.doi.org/10.1016/j.jde.2008.01.003.

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19

Chen, Shuxing, Dian Hu, and Beixiang Fang. "Stability of the E–H type regular shock refraction." Journal of Differential Equations 254, no. 8 (2013): 3146–99. http://dx.doi.org/10.1016/j.jde.2012.12.018.

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20

Gifford, Kate L., Paul Gifford, Peter L. Hendicott, and Katrina L. Schmid. "Stability of peripheral refraction changes in orthokeratology for myopia." Contact Lens and Anterior Eye 43, no. 1 (2020): 44–53. http://dx.doi.org/10.1016/j.clae.2019.11.008.

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21

Lee, Sun Young, and Yang Kyung Cho. "The Effect of Scleral Sutured Intraocular Lens with Optic-haptic Junction Fixation in the Capsular Bag." Journal of the Korean Ophthalmological Society 62, no. 9 (2021): 1172–80. http://dx.doi.org/10.3341/jkos.2021.62.9.1172.

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Purpose: To compare the stability of intraocular lens (IOL) insertion methods of sutured haptics in the bag with scleral fixation to those of in the bag insertion and scleral sulcus fixation. Methods: In group of only phacodonesis, two IOL insertion methods, in the bag insertion and sutured haptics in the bag with scleral fixation were compared. In group of phacodonesis with less than 90° zonulysis, two IOL insertion methods, sutured haptics in the bag with scleral fixation and scleral sulcus fixation were compared. Postoperative 2 months and 12 months refraction were compared with target refr

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22

Rossato, Massimo, Alessandra Nart, Giuseppe Messina, et al. "The Refraction Assessment and the Electronic Trial Frame Measurement during Standing or Sitting Position Can Affect Postural Stability." International Journal of Environmental Research and Public Health 19, no. 3 (2022): 1558. http://dx.doi.org/10.3390/ijerph19031558.

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Vision has been shown to influence body posture. The purpose of this study is to investigate the correlations between visual acuity and body postural control both in a standing and seated position. This cohort study included 37 patients examined using Adaptica’s (Italy) Kaleidos and VisionFit. Objective refraction was measured with Kaleidos both in a standing and seated position by the same operator and in the same environmental conditions. The parameters obtained with the device were binocular refraction, monocular refraction, pupil distance, pupil size, head tilt, gaze, phorias, and tropias.

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23

Cano-Ortiz, Antonio, Álvaro Sánchez-Ventosa, Timoteo González-Cruces, et al. "Objective Rotational Analysis of EVO Toric ICLs Using Infrared Retinal Retroillumination Imaging." Journal of Clinical Medicine 14, no. 9 (2025): 2895. https://doi.org/10.3390/jcm14092895.

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Background/Objectives: To objectively evaluate the rotational stability, refractive predictability, and visual outcomes of toric EVO ICL using automated infrared retinal retroillumination imaging. Setting/Venue: The research was conducted in a specialized ophthalmic surgery center. Design: Longitudinal analytical prospective study. Methods: The methodology included preoperative and postoperative assessments of visual acuity, subjective refraction, corneal topography, and anterior segment OCT. The implantation and alignment process utilized advanced digital centration techniques. Postoperative

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Aka, Mfoniso U., Moses M. M. Ekpa, Doris O. Okoroh, Bethrand E. Oguama, and Johnson C. Ibuot. "INVESTIGATION OF STABILITY OF ENGINEERING PROJECTS USING SEISMIC REFRACTION TECHNIQUE." Geological Behavior 4, no. 2 (2020): 84–88. http://dx.doi.org/10.26480/gbr.02.2020.84.88.

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Seismic refraction survey was conducted at Ibiono Ibom Local government area of Akwa Ibom State, Nigeria, using 12 channels ES 3000S enhancement seismograph. This was done to evaluate and obtained information on depth and thickness of the shallow subsurface and characterized the bearing and engineering parameters on the bases of soil and rock competencies for stability of engineering works. The travel times of refracted waves measured were used to calculate P and S wave velocities employed in the evaluation of bearing strength and engineering parameters. The results revealed that seismic waves

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Twa, Michael D., Tiffany J. Hurst, Judy G. Walker, George O. Waring, and David J. Schanzlin. "Diurnal stability of refraction after implantation with intracorneal ring segments." Journal of Cataract & Refractive Surgery 26, no. 4 (2000): 516–23. http://dx.doi.org/10.1016/s0886-3350(00)00327-8.

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White, Michael J., and Michelle E. Swearingen. "Use of wind and turbulent stability for classifying mean refraction." Journal of the Acoustical Society of America 121, no. 5 (2007): 3063. http://dx.doi.org/10.1121/1.2434277.

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27

Costa, Mirella B., Eduardo C. Macedo, and Eduardo Siegle. "Wave refraction and reef island stability under rising sea level." Global and Planetary Change 172 (January 2019): 256–67. http://dx.doi.org/10.1016/j.gloplacha.2018.10.015.

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28

Yuksel, Yalcin, Esin Cevik, Marcel van Gent, et al. "STABILITY OF HIGH DENSITY CUBES ON BREAKWATER ROUNDHEADS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 31. https://doi.org/10.9753/icce.v38.structures.31.

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Due to the three-dimensional flow field formed by the diffraction and refraction effects of waves in breakwaters, the stability of the armour layer of roundheads is more critical than the trunk sections. For this reason, roundheads require heavier units or a gentler slope. In this research, the stability of breakwater roundheads consisting of high-density cube blocks in a single layer under the influence of wind and swell waves was examined.

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29

Shuber, Hassenien Safa. "Implantable Collamer Lens for Correction of Refractive Errors in Patients with Keratoconus following Collagen Cross-Linking: One Year Follow-up." International Journal of Keratoconus and Ectatic Corneal Diseases 3, no. 1 (2014): 29–35. http://dx.doi.org/10.5005/jp-journals-10025-1074.

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ABSTRACT Objective The purpose of this study is to assess the predictability, safety, efficacy and stability of correction of refractive errors in patients with keratoconus using Visian implantable collamer lens (ICL) following collagen cross-linking. Materials and methods This prospective, non-comparative study evaluated 20 eyes of 14 patients with keratoconus subjected to implantation of intraocular collamer lens at least 1 year following collagen cross-linking and stable refraction. Mean preoperative myopia was −8.43 ± 5.13 Diopters (D) (–3.5 to −20.0D and mean cylinder was −2.19 ± 1.28D (0

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Roszkowska, Anna M., Giuseppe Tumminello, Carmelo Licitra, et al. "One-Year Results of Photorefractive Keratectomy for Myopia and Compound Myopic Astigmatism with 210 nm Wavelength All Solid-State Laser for Refractive Surgery." Journal of Clinical Medicine 12, no. 13 (2023): 4311. http://dx.doi.org/10.3390/jcm12134311.

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Background: To examine the 12-month clinical and refractive outcomes of PRK performed with a UV all-solid-state laser. Methods: The study included healthy patients with myopia and/or compound myopic astigmatism enrolled for refractive surgery and treated with PRK using a 210 nm wavelength, 2 kHz repetition rate, UV all-solid-state laser (LaserSoft, Katana Technologies GmbH, Kleinmachnow, Germany). All subjects were examined at baseline and after 1, 3, 6, and 12 months after the treatment with a slit lamp, refraction, visual acuity assessment (logMAR chart), tonometry, ophthalmoscopy, and corne

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31

Cho, Yang Kyung, and Balamurali K. Ambati. "Efficacy of haptic sutured in-the-bag intraocular lens for intraocular lens-capsule complex stability: a comparison of three insertion methods." International Journal of Ophthalmology 15, no. 9 (2022): 1468–75. http://dx.doi.org/10.18240/ijo.2022.09.09.

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AIM: To evaluate the efficacy and stability of haptic sutured in-the-bag intraocular lens (IOL) in eyes with zonular instability. METHODS: A total 60 eyes of 60 patients were included in this retrospective cohort study. Postoperative stability in three groups [haptic sutured IOL in the bag, IOL in the bag insertion with haptics oriented toward areas of zonulysis, IOL with capsular tension ring (CTR) in the bag insertion] were compared according to the IOL insertion methods. To evaluate the IOL stability, the changes of anterior chamber depth (ACD), refraction, contraction of anterior continuou

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Kim, Taejin, Taeho Bong, and Donggeun Kim. "Probabilistic Analysis of Infinite Slope Stability Considering Variation in Soil Depth." Applied Sciences 15, no. 2 (2025): 936. https://doi.org/10.3390/app15020936.

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In probabilistic slope stability analysis, soil depth has been treated as a deterministic variable, although it is a highly variable parameter. This study aims to identify soil depth variability using seismic refraction survey data and to analyze its impact on probabilistic analysis of slope stability. Seismic refraction survey data were collected from 70 slopes in South Korea and employed to identify the variability of soil depth within natural slopes. As a result, the average soil depth across 70 slopes was 2.5 m, with an average coefficient of variation (COV) of 29%, indicating high variabi

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Yaşa, Dilek, Bülent Köse, and Alper Ağca. "Rotational Stability of a New Posterior Chamber Toric Phakic Intraocular Lens." Journal of Ophthalmology 2020 (April 9, 2020): 1–7. http://dx.doi.org/10.1155/2020/1624632.

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Purpose. To evaluate the refractive results and rotational stability of Eyecryl toric phakic intraocular lens (pIOL). Methods. In this retrospective single-surgeon case series, manifest refraction, visual acuities, endothelial cell density (ECD), and pIOL rotation were evaluated over 6 months. Results. 43 eyes from 23 patients were included. At 6 months, the SE was within ±0.50 D of emmetropia in 30 (70%) eyes and within ±1.00 D of emmetropia in 39 (91%) eyes. The efficacy and safety indices were 1.25 ± 0.38 and 1.41 ± 0.34, respectively. Mean ECD was 2719 ± 296 cells/mm2 at the preoperative v

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Salgado, Ramiro M. P. C., Paulo F. A. A. S. Torres, and António A. P. Marinho. "Femtosecond Laser-assisted Lens Surgery with Low-energy Pulse versus Conventional Phacoemulsification for Presbyopia Correction: An Intraindividual Study." Open Ophthalmology Journal 15, no. 1 (2021): 43–53. http://dx.doi.org/10.2174/1874364102115010043.

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Background: Lens surgery with multifocal IOL implantation for presbyopia correction is performed by femtosecond laser-assisted lens surgery or conventional phacoemulsification. Objective: To compare the clinical results of femtosecond laser-assisted with low-energy pulse conventional phacoemulsification lens surgery for presbyopia correction intraindividually. Methods: Charts from patients who underwent Refractive Lens Exchange (RLE) for presbyopia correction in a single center, with Femtosecond Laser-Assisted Lens Surgery (FLALS) in one eye and Conventional Phacoemulsification (CP) in the oth

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Halsig, S., A. Bertarini, R. Haas, et al. "Atmospheric refraction and system stability investigations in short-baseline VLBI observations." Journal of Geodesy 93, no. 4 (2018): 593–614. http://dx.doi.org/10.1007/s00190-018-1184-5.

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36

Doroodgar, Farideh, Sana Niazi, Azad Sanginabadi, and Cyrus Alinia. "Visual outcomes of a new implantable phakic contact lens in patients with stable keratoconus." International Eye Research 1, no. 4 (2020): 262–67. http://dx.doi.org/10.18240/ier.2020.04.11.

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AIM: To assess the efficacy, safety, stability and predictability of an implantable Phakic contact lens in patients with stable keratoconus. METHODS: The uncorrected and the best corrected visual acuity, defocus curve, contrast sensitivity, refraction and possible side effects were measured in 14 patients after utilizing implantable phakic contact lens (IPCL) to correct refractive errors. The result was assessed for more than 6mo. RESULTS: The mean preoperative spherical equivalent (SE) and astigmatism got changed from -6.94±2.79 DS and -4.24±1.42 DC to -0.23±0.43 DS and -1.05±0.49 DC, respect

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Xia, Fei, Yang Shen, Tian Han, Jing Zhao, Haipeng Xu, and Xingtao Zhou. "Small Incision Lenticule Extraction (SMILE) for Moderate and High Myopia: Seven-Year Outcomes of Refraction, Corneal Tomography, and Wavefront Aberrations." Journal of Ophthalmology 2020 (April 23, 2020): 1–7. http://dx.doi.org/10.1155/2020/3825864.

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Purpose. To investigate the long-term outcomes of refraction, corneal tomography, and wavefront aberrations after small incision lenticule extraction (SMILE) for moderate and high myopia. Methods. Prospective, nonconsecutive case series. A total of 26 patients (26 eyes) who underwent SMILE from May 2010 to March 2013 at the Fudan University Eye and ENT Hospital (Shanghai, China) were enrolled. The periods of follow-up were 1 month, 1 year, 5 years, and 7 years after surgery. The routine eye examinations included uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CD

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Carreras-Díaz, Humberto, María del Rosario Carreras-Díaz, and Amalia Lorente-Velázquez. "Refractive outcomes after V4c Toric collamer lens implantation over 1y of follow-up." International Journal of Ophthalmology 17, no. 7 (2024): 1322–30. http://dx.doi.org/10.18240/ijo.2024.07.18.

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AIM: To evaluate refractive outcomes and corneal astigmatism changes after Toric implantable collamer lens with a central port (V4c T-ICL) implantation over 1y of follow-up. METHODS: A retrospective study was performed including 50 eyes of 50 patients that underwent V4c T-ICL implantation. Uncorrected (UDVA) and corrected (CDVA) distance visual acuities, refraction, refractive and corneal astigmatism changes and corneal coupling correction were evaluated preoperatively, 1 and 12mo postoperatively. Vector analysis was used for astigmatism changes. Coefficient of adjustment (CAdj) was calculated

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Ye, Xia, Hong Bing Yao, Yan Qun Tong, et al. "Experiment Study of Influence on Laser Beam Quality Induced by Thermal Lens Effect and Depolarization Effect." Applied Mechanics and Materials 43 (December 2010): 670–74. http://dx.doi.org/10.4028/www.scientific.net/amm.43.670.

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For high power and repetitive Nd:Glass laser, there would appear serious thermal effect due to the significantly-enhanced pumping optical power density in laser rod, which would induce thermal double refraction, phase distortion, thermal focusing, thermal depolarization, etc. Thus, the laser output power and beam quality would be influenced severely. Influence of thermal lens effect and depolarization effect caused by thermal stress double refraction on laser beam were studied in this paper for high power and repetitive laser. In the experiment of thermal lens effect, change of the laser spot

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Christian, J. M., E. A. McCoy, G. S. McDonald, J. Sánchez-Curto, and P. Chamorro-Posada. "Helmholtz Bright Spatial Solitons and Surface Waves at Power-Law Optical Interfaces." Journal of Atomic, Molecular, and Optical Physics 2012 (October 11, 2012): 1–21. http://dx.doi.org/10.1155/2012/137967.

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We consider arbitrary angle interactions between spatial solitons and the planar boundary between two optical materials with a single power-law nonlinear refractive index. Extensive analysis has uncovered a wide range of new qualitative phenomena in non-Kerr regimes. A universal Helmholtz-Snell law describing soliton refraction is derived using exact solutions to the governing equation as a nonlinear basis. New predictions are tested through exhaustive computations, which have uncovered substantially enhanced Goos-Hänchen shifts at some non-Kerr interfaces. Helmholtz nonlinear surface waves ar

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Xu, Yuchang, Yang Zhang, Xiaokang Wang, Guanbing Zhang, Guang Yang, and Hong Yuan. "Performance Analysis of Stellar Refraction Autonomous Navigation for Cross-Domain Vehicles." Remote Sensing 17, no. 14 (2025): 2367. https://doi.org/10.3390/rs17142367.

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Stellar refraction autonomous navigation provides a promising alternative for cross-domain vehicles, particularly in near-space environments where traditional inertial and satellite navigation methods face limitations. This study develops a stellar refraction navigation system that utilizes stellar refraction angle observations and the Implicit Unscented Kalman Filter (IUKF) for state estimation. A representative orbit with altitudes ranging from 60 km to 200 km is designed to simulate cross-domain flight conditions. The navigation performance is analyzed under varying conditions, including or

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Thomas, Bettina C., Ramin Khoramnia, Gerd U. Auffarth, and Mike P. Holzer. "Clinical outcomes after implantation of a toric intraocular lens with a transitional conic toric surface." British Journal of Ophthalmology 102, no. 3 (2017): 313–16. http://dx.doi.org/10.1136/bjophthalmol-2017-310386.

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PurposeTo evaluate the postoperative outcomes after implantation of a hydrophilic toric intraocular lens (tIOL) with a transitional conic toric surface in patients with astigmatism undergoing refractive lens exchange (RLE) or cataract surgery.MethodsIn this monocentric study, clinical outcomes following implantation of the hydrophilic Precizon toric IOL model 565 (Ophtec) were analysed. For intraoperative axis alignment, the Verion Image Guided System was used. Intended versus achieved refraction, IOL position, visual acuity outcomes and power vector analyses were evaluated 3 months postoperat

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Chhetri, Santosh, Suraj Thapa Magar, Srijana Adhikari, and Umesh Belbase. "Clinical Scenario of Pseudomyopia Before and After Vision Therapy: Two Case Reports." Nepalese Journal of Ophthalmology 16, no. 1 (2024): 74–79. https://doi.org/10.3126/nepjoph.v16i1.59178.

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Introduction: Cycloplegic agents are the most common method used for accommodation relaxation in accommodative spasm cases. However, concerns have arisen about the possibility of rebound effects following the cessation of cycloplegic treatment. This case reports demonstrates a clinical approach for managing accommodative spasm, utilizing the modified Borish’s delayed subjective technique and vision therapy. Additionally, also evaluates the patient's clinical status after six months of cessation of therapy. Case Report 1: A 9-year-old female presented with a headache and blurred vision. Her pre

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Epitropoulos, Alice T. "Visual and Refractive Outcomes of a Toric Presbyopia-Correcting Intraocular Lens." Journal of Ophthalmology 2016 (2016): 1–6. http://dx.doi.org/10.1155/2016/7458210.

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Purpose. To evaluate outcomes in astigmatic patients implanted with the Trulign (Bausch + Lomb) toric presbyopia-correcting intraocular lens (IOL) during cataract surgery in a clinical practice setting.Methods. Retrospective study in 40 eyes (31 patients) that underwent cataract extraction and IOL implantation in a procedure using intraoperative wavefront aberrometry guidance (ORA system). Endpoints included uncorrected visual acuity (VA), reduction in refractive cylinder, accuracy to target, axis orientation, and safety.Results. At postoperative month 1, refractive cylinder was ≤0.50 D in 97.

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Normandin, R. "All-optical logic in fiber systems using nonlinear refraction." Canadian Journal of Physics 65, no. 8 (1987): 913–18. http://dx.doi.org/10.1139/p87-143.

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We describe the realization of a nonlinear all-optical logic gate and modulator for use in fiber-optics communication systems. The physical mechanisms for the optical nonlinearities and their influences on device operation and design are considered. Results are presented for the AND, NOR, NOT, and XOR logic functions with a better than 20 dB contrast ratio. The gates and modulators exhibit exceptional stability, because no resonator, feedback, or stringent wavelength control are needed. Silicon at λ = 1.06 μm has been used for these "proof-of- concept" experiments. The feasibility of picosecon

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Nováček, Ladislav Viktor, Marie Němcová, Kateřina Tyx, et al. "Evaluation of Astigmatism-Correcting Efficiency and Rotational Stability after Cataract Surgery with a Double-Loop Haptic Toric Intraocular Lens: A 1-Year Follow-Up." Biomedicine Hub 6, no. 1 (2021): 30–41. http://dx.doi.org/10.1159/000513894.

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<b><i>Objectives:</i></b> The aim of this study was to assess the clinical outcomes, predictability of results, efficiency of astigmatism correction, and rotational stability of the Bi-Flex 677TAY (Medicontur Medical Engineering Ltd., Zsámbék, Hungary) monofocal toric intraocular lens (IOL) designed for cataract patients with astigmatism. <b><i>Methods:</i></b> The IOLs were implanted either mono- or binocularly, following routine cataract surgery. Visual and refractive outcomes, as well as off-axis rotation were assessed throughout a 1-year foll

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Medina, Antonio, and Peter R. Greene. "Plastic modification of human cornea in vivo: applications to clinical refractive procedures." Therapeutic Advances in Ophthalmology 12 (January 2020): 251584142091302. http://dx.doi.org/10.1177/2515841420913027.

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Purpose: The purpose of this report is to quantify how pressure applied to the human cornea, either physiological or intentional, affects its curvature. In particular, how pneumatic procedures flatten the central cornea and keep it flat over time, thereby decreasing the patient’s myopia. Methods: A viscoelastic model is developed for plastic deformation which gives us the basic governing equations of the elastic and plastic strain of corneal stroma. The model is applied to data from corneas of six patients who underwent pneumatic keratology (NEumatica Keratologia) to reduce their myopia. Resul

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Kostenev, S. V., and E. V. Kim. "Modern aspects of presbyopia correction in patients with myopia (literature review)." POINT OF VIEW. EAST – WEST 12, no. 1 (2025): 86–92. https://doi.org/10.25276/2410-1257-2025-1-86-92.

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Purpose. To study modern technologies of non-surgical and surgical methods of presbyopia correction in patients with myopic refraction. Material and methods. For this review, we used foreign and domestic scientific literature published on PubMed, Eyepress, PMC free article, Google Scholar platforms, devoted to the improvement of technologies and peculiarities of near and distance vision correction in presbyopia associated with myopia. Studies published between 1 January 2005 and 1 January 2023 were included in the analysis. Results. Various methods have been proposed to correct refractive erro

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Nguyen, Dung Tien, Le Canh Trung, Nguyen Duy Cuong, et al. "Measuring the refractive index of a methanol - water mixture according to the wavelength." Photonics Letters of Poland 13, no. 1 (2021): 10. http://dx.doi.org/10.4302/plp.v13i1.1058.

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The refractive index of the methanol-water mixture depending on the wavelength at different concentrations was determined by our experimental method using a Michelson interferometer system. A comparative study of Gladstone-Dale, Arago–Biot and Newton relations for predicting the refractive index of a liquid has been carried out to test their validity for the methanol-water mixture with the different concentrations 30%, 40%, 50%, 60%, 80%, and 100%. The comparison shows the good agreement between our experimental results and the results in the expressions studied over the wavelength range appro

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George, G. C., I. D. Etu, E. O. Odokuma, and E. Edeye. "Sustainable Subsurface Characterization and Geo-Environmental Risk Assessment in Opolo and Tombia, South-Southern Nigeria: Implications for Water Resource Management and Hazard Mitigation." IOP Conference Series: Earth and Environmental Science 1492, no. 1 (2025): 012044. https://doi.org/10.1088/1755-1315/1492/1/012044.

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Abstract This paper examines the subsurface geo-characterization of two towns namely Opolo and Tombia using VES and seismic refraction to investigate the availability of water, ground stability and earthquakes risks. VES data was interpreted from twelve of the stations and six seismic refraction sites to obtain layer resistivities, seismic velocities, and lithological characteristics; these were correlated with the well logs from adjacent wells for ease of interpretation. The outcome reveal that subsurface of Opolo is composed of four fundamental geoelectric layers which includes a deep sandy

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