Academic literature on the topic 'Anterior eye segment'

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Journal articles on the topic "Anterior eye segment"

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Lee, J. P., and J. M. Olver. "Anterior Segment Ischaemia." Eye 4, no. 1 (January 1990): 1–6. http://dx.doi.org/10.1038/eye.1990.2.

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Eter, N., S. Garbe, D. Pauleit, T. Schüttoff, and H. Schüller. "Magnetic Resonance Imaging Analysis of Anterior and Posterior Eye Segment Displacement during Ocular Gaze Shifts." European Journal of Ophthalmology 13, no. 2 (March 2003): 196–201. http://dx.doi.org/10.1177/112067210301300212.

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Purpose To determine the relationship between movements of the posterior and anterior eye segments during arbitrary gaze shifts and to obtain information for monitoring fixation during radiotherapy for ocular diseases. Methods We examined eye movements of ten emmetropic volunteers in a 1.5 T magnetic resonance system. Using a T2-weighted ultrafast turbo-spin echo sequence (UTSE), the eyes were examined within 21 seconds. Sagittal and transversal eye slices were obtained in five passages in five gaze directions (straight ahead, 15° above, 15° below, 15° right and 15° left of the primary position). Displacement of the posterior eye segment was analyzed in relation to the movement of the anterior segment in all directions. Results The relationship between the movements of the anterior and posterior eye segment was 1:0.8 (± 0.06 SD) during horizontal gaze shifts and 1:1.16 (± 0.11 SD) during vertical gaze shifts. Conclusions Magnetic resonance imaging showed that the relationship between anterior and posterior eye segments was different during horizontal and vertical eye movements, indicating the presence of more than one center of rotation. Compared to the anterior eye segment, there was less displacement of the posterior eye segment during horizontal eye movements and more displacement during vertical eye movements.
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Olver, J. M., and A. C. E. McCartney. "Anterior segment vascular casting." Eye 3, no. 3 (May 1989): 302–7. http://dx.doi.org/10.1038/eye.1989.43.

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Rohen, Johannes W., and Richard H. W. Funk. "Vasculature of the anterior eye segment." Progress in Retinal and Eye Research 13, no. 2 (January 1994): 653–85. http://dx.doi.org/10.1016/1350-9462(94)90026-4.

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Hernandez-Zimbron, Luis Fernando, Rosario Gulias-Cañizo, María F. Golzarri, Blanca Elizabeth Martínez-Báez, Hugo Quiroz-Mercado, and Roberto Gonzalez-Salinas. "Molecular Age-Related Changes in the Anterior Segment of the Eye." Journal of Ophthalmology 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/1295132.

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Purpose. To examine the current knowledge about the age-related processes in the anterior segment of the eye at a biological, clinical, and molecular level. Methods. We reviewed the available published literature that addresses the aging process of the anterior segment of the eye and its associated molecular and physiological events. We performed a search on PubMed, CINAHL, and Embase using the MeSH terms “eye,” “anterior segment,” and “age.” We generated searches to account for synonyms of these keywords and MESH headings as follows: (1) “Eye” AND “ageing process” OR “anterior segment ageing” and (2) “Anterior segment” AND “ageing process” OR “anterior segment” AND “molecular changes” AND “age.” Results. Among the principal causes of age-dependent alterations in the anterior segment of the eye, we found the mutation of the TGF-β gene and loss of autophagy in addition to oxidative stress, which contributes to the pathogenesis of degenerative diseases. Conclusions. In this review, we summarize the current knowledge regarding some of the molecular mechanisms related to aging in the anterior segment of the eye. We also introduce and propose potential roles of autophagy, an important mechanism responsible for maintaining homeostasis and proteostasis under stress conditions in the anterior segment during aging.
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Acharya U, R., L. Y. Wong, E. Y. K. Ng, and J. S. Suri. "Automatic identification of anterior segment eye abnormality." IRBM 28, no. 1 (March 2007): 35–41. http://dx.doi.org/10.1016/j.rbmret.2007.02.002.

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Kampfer, T., A. Wegener, V. Dragomirescu, and O. Hockwin. "Improved Biometry of the Anterior Eye Segment." Ophthalmic Research 21, no. 3 (1989): 239–48. http://dx.doi.org/10.1159/000266815.

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Purišić, Azra, Safet Lješnjanin, and Aleksandar Stijepčević. "Influence of diabetes mellitus on anterior segment of eye." Zdravstvena zastita 41, no. 6 (2012): 66–70. http://dx.doi.org/10.5937/zz1204066p.

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Pineles, S. L., M. Y. Chang, E. L. Oltra, M. S. Pihlblad, J. P. Davila-Gonzalez, T. C. Sauer, and F. G. Velez. "Anterior segment ischemia: etiology, assessment, and management." Eye 32, no. 2 (November 17, 2017): 173–78. http://dx.doi.org/10.1038/eye.2017.248.

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Jhanji, V., E. Chan, S. Das, H. Zhang, and R. B. Vajpayee. "Trypan blue dye for anterior segment surgeries." Eye 25, no. 9 (June 17, 2011): 1113–20. http://dx.doi.org/10.1038/eye.2011.139.

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Dissertations / Theses on the topic "Anterior eye segment"

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Lee, Graham Andrew. "Advances in anterior segment disease / Graham A. Lee." [St. Lucia, Qld.], 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18442.pdf.

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Kozariychuk, N. Ya, Ya I. Penishkevych, T. B. Sykyrytska, and O. P. Melnyk. "Modern technologies on managing anterior eye segment penetrating injurie." Thesis, БДМУ, 2017. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/16907.

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Hosseini, Kamran. "Optical biopsy in the anterior segment of the eye." [Maastricht] : Maastricht : [Maastricht University] ; University Library, Universiteit Maastricht [host], 2008. http://arno.unimaas.nl/show.cgi?fid=14564.

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Chandler, Heather Lynn. "Epithelial-mesenchymal transition in the anterior segment of the eye." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1154533588.

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Beckers, Helena Jacqueline Maria. "Ultrastructural studies on the innervation of the anterior eye segment and eye related peripheral ganglia." Maastricht : Maastricht : Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 1993. http://arno.unimaas.nl/show.cgi?fid=5747.

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Oehring, Daniela. "Ocular biomechanics of the anterior segment." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/10647.

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The thesis investigates methods of examining corneal biomechanics using non-contact tonometry and introduces novel techniques to investigate corneal material properties in vivo. A comprehensive systems analysis of the CorvisST (CST) and Ocular Response Analyser (ORA) was performed. Pressure sensors were used to characterisation the airflow produced by the CST and the ORA. Distinct differences were observed between the central airflow pressures between the two devices: the CST pressure was higher and of shorter duration. Scheimpflug high-speed imaging via the CST allowed components of the corneal deformation to be investigated and the development of a 3D deformation matrix (time, depth and spatial resolution) through tracing of the anterior and posterior corneal surface. Measures of whole eye movement (WEM) with CST were found to be robust. WEM demonstrated an asymmetric profile and a correction method was developed to address the corneal deformation matrix for this asymmetry. Novel methods for characterisation of intrinsic material characteristics of the cornea were developed using numerical and graphical analytical procedures. Application of these parameters was tested on enucleated porcine eyes across a wide range of manometry internal ocular pressure (MIOP). The dynamic E-Modulus was found to be most affected by MIOP change. To investigate the in vivo distribution and heterogeneity of the corneal biomechanics, a novel set-up allowed the mapping of corneal biomechanics across the cornea using the CST (central, paracentral, peripheral) and ORA (central, peripheral). Biometric and demographic grouping of subjects allowed detection of discriminating factors between individuals. The results suggest that the in vivo cornea of healthy human adults can be characterised as a viscoelastic, damped system for longitudinal strain and a highly oscillating system for lateral strain. The cornea is approximately homogenous for measures of rigidity and dynamic E-Modulus but other corneal material characteristics (longitudinal and lateral strain, hysteresis, damping and compressibility) demonstrated regional differences. The experimental design employed allowed for strict control of biometric and biomechanical intersubject variables, based on gold-standard techniques as well as newly-developed methods, thereby creating a normative database for future use.
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Ylikärppä, R. (Ritva). "Type XVIII and XV collagens: primary structure of human alpha1(XVIII) chain, phenotypic studies of type XVIII collagen single null and type XVIII and XV collagen double null mice." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514271416.

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Abstract In this thesis study, the primary structure of the human α1(XVIII) polypeptide was elucidated, its tissue distribution was studied, and the phenotypic changes in the mouse eye due to lack of type XVIII collagen in a knock-out mouse model were studied further. In addition, the consequences of simultaneous lack of both type XVIII and XV collagen were studied in a mouse model lacking both of these proteins. Two variant forms of human α1(XVIII) polypeptide were identified in this study, although, to date, a third form has also been characterized. The analysis of tissue distribution of the two polypeptide forms revealed differences in their tissue distribution, since the longest variant occurs prominently in the liver, while the short form is the major transcript in other tissues studied, e.g. in the kidney. The study of the type XVIII single null mouse eyes revealed abnormalities in the anterior eye segment in addition to the previously reported defects in the posterior eye part. In the type XVIII single null mice the iris was fragmented, pigment deposits could be seen in the pupil, and the pupillary ruff in the edge of a normal mouse iris was missing in these mice. The ciliary body was also abnormal, since the ciliary processes start to show regression in adult animals and eventually the basal infoldings of the non-pigmented ciliary body epithelia become flattened in the null mice. The intraocular pressure stabilizes to a lower level in adult mutant mice compared to controls, most likely reflecting the atrophied ciliary epithelia. The BM zones were also defective in the type XVIII null mouse eyes. The absence of an immunosignal with one of the antibodies detecting laminin γ2 chain in the type XVIII null mouse eyes may implicate conformational changes in the laminin γ2 chain due to lack of type XVIII collagen, and subsequently interaction between type XVIII collagen and laminin γ2 chain in normal mouse eye BMs. The study of the type XVIII and XV double null mice revealed that these mice were viable and fertile and had no major additional abnormalities compared to both single null mice. However, the regression of hyaloid capillaries (vasa hyaloidea propria, VHP) was studied in these mice, and a slight delay in the detachment of these vessels from the retina was noticed. Thus, the two collagens do not function entirely independently from each other. The studies with type XVIII collagen single null mice indicate that in addition to the posterior eye phenotype, this collagen is needed for the normal structural integrity of the anterior eye segment and basement membranes of the eye. The mouse model lacking both type XVIII and type XV collagen indicates that the roles of the two collagens are essentially diverse, although a slight compensatory effect was observed in the detachment of the hyaloid capillaries from the retina.
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Li, Yan. "Image Processing and Clinical Applications of Anterior Segment Optical Coherence Tomography." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1212436115.

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Fris, Miroslav. "The effect of single and repeated ultraviolet radiation on the anterior segment of the rabbit eye." Doctoral thesis, Norwegian University of Science and Technology, Department of Neuroscience, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2110.

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Over the last two decades, depletion of stratospheric ozone has increased the flux of ultraviolet radiation (UVR) at the surface of the earth and the cumulative effect of UVR has become an important aspect of UV-induced eye damage. Epidemiological studies generally assess the chronic, low dose UVR exposure conditions while the laboratory animal experiments usually examine the acute response to high dose exposures. Thus, the study conditions are dissimilar and we are not free to assume that the two variant experimental settings necessarily trigger the same damage or repair mechanism. In order to correlate the results obtained from both experimental settings, laboratory studies of repeated UVR exposures under specific experimental design need to be conducted. The purpose of the present study was to focus on the comparison of the effects of single and repeated UVR-B exposures of the same overall doses on the metabolic profile of the anterior segment of the rabbit eye.

Rabbit eyes were exposed to single (312 nm, 3.12 J/cm2) or repeated (312 nm, 3 x 1.04 J/cm2) UVB irradiations and corneal, aqueous humour and lenticular samples were analysed by NMR spectroscopy. Special grouping patterns among the tissue samples and the relative percentage changes in particular metabolite concentrations were evaluated using advanced statistical methods (Principal component analysis, One-way ANOVA, Independent sample t-test).

The metabolic profiles of UVB irradiated and control samples were significantly different. Especially, alterations in the concentrations of antioxidants (ascorbate, GSH), compounds related to sugar metabolism (glucose, lactate), osmolytes (taurine, hypo-taurine, myoinositol, scylloinositol), choline-containing compounds (choline, phosphocholine) and amino acids were observed. A substantiall additivity of the repeated UVR-B exposures was revealed.

For the first time, a comparison of the effect of a single and repeated UVR exposure of the same overall dose on the metabolic profile of rabbit eye was conducted and described. This study reveals the cumulative effect of repeated UVB irradiation on the anterior segment of the rabbit eye and shows that even a 48 hours interval between subsequent UVR-B exposures is not sufficient for the healing process to restore normal metabolic status in the anterior segment of the rabbit eye.

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Varikooty, Jalaiah. "Ocular Discomfort Upon Tear Drying." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1239.

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Purpose: Assess the relationship between tear film drying and sensation between blinks. Methods: MATLAB sampled a slitlamp video camera, a potentiometer and a microphone while subjects kept one eye open for as long as possible. 23 subjects rated the intensity of the ocular sensation while video and voice data were collected simultaneously. The tear drying on the cornea was measured. Results: The sensation was triphasic. Two linear functions described the latter 2 parts of the data (r ≥ 0. 95). The correlation between TBUT and the elbow in the time-discomfort function was 0. 72. Extent of tear film drying was linearly correlated to time (median correlation = 0. 88). The correlation between the discomfort elbow and image elbow was 0. 93 with single data pair for each subject. Analysis of sensation characteristics showed significant differences between itching and burning for both intensity and time (p = 0. 03 and p = 0. 02 respectively). Conclusions: Simultaneous recording of ocular surface appearance, discomfort intensity and attributes of sensation provide novel information about the development of discomfort during ocular surface drying. The rapid increase in discomfort proceeding blinking has been quantified and the relationship between the time course of drying and discomfort is elucidated.
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Books on the topic "Anterior eye segment"

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Rapuano, Christopher J. Anterior segment. St. Louis, Mo: Mosby, 2000.

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Primary care of the anterior segment. 2nd ed. Norwalk, CT: Appleton & Lange, 1995.

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Catania, Louis J. Primary care of the anterior segment. Norwalk, Conn: Appleton & Lange, 1988.

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Fiona, Stapleton, ed. The anterior eye and therapeutics: Diagnosis and management. Edinburgh: Butterworth-Heinemann, 2003.

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A, Long Daniel, and New Orleans Academy of Ophthalmology., eds. Anterior segment and strabismus surgery: Proceedings of the 44th Annual Symposium, New Orleans, LA, USA, February 9-12, 1995. Amsterdam: Kugler Publications, 1996.

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Noble, Bruce. Anterior segment repair and reconstruction: Techniques and medico-legal issues. Oxford: Butterworth-Heinemann, 2001.

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E, Sutphin John, and American Academy of Ophthalmology, eds. External disease and cornea, 2007-2008. 2nd ed. [San Francisco, CA]: American Academy of Ophthalmology, 2007.

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Goldsmith, John Patrick. The peptidergic innervation of the conjuctiva and anterior segment of the eye. Manchester: University of Manchester, 1997.

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W, Rohen Johannes, ed. Basic aspects of glaucoma research II: Functional morphology of the vasculature in the anterior eye segment. Stuttgart ; New York: Schattauer, 1990.

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E, Nelson Michael, ed. External eye disease: A colour atlas. Edinburgh: Churchill Livingstone, 1992.

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Book chapters on the topic "Anterior eye segment"

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Pavlin, Charles J., and FS Foster. "Anterior Segment Tumors." In Ultrasound Biomicroscopy of the Eye, 98–139. New York, NY: Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-2470-9_6.

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Sayed, Mohamed S., Elaine Han, and Richard K. Lee. "Sports-Related Injuries of the Anterior Segment." In Sports-related Eye Injuries, 29–58. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9741-7_5.

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Hayashi, Takahiko, Alexander Händel, Mario Matthaei, Claus Cursiefen, and Sebastian Siebelmann. "Optical Coherence Tomography of the Anterior Segment of the Eye in Corneal Transplantation." In Optical Coherence Tomography of the Anterior Segment, 175–98. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07730-2_10.

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Siebelmann, Sebastian, Stefan J. Lang, Takahiko Hayashi, Atsuyuki Ishida, Alexander Händel, and Alexandra Lappas. "Anatomy and Traumatology of the Anterior Segment of the Eye with Optic Coherence Tomography." In Optical Coherence Tomography of the Anterior Segment, 37–49. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07730-2_3.

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Verbeek, A. M. "Diagnostic ultrasonography of the anterior segment of the eye." In Documenta Ophthalmologica Proceedings Series, 421–30. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1846-0_52.

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Claoué, C., and S. Howie. "Immunological Aspects of Anterior Segment Disease of the Eye Induced by Herpes Simplex Virus." In Immunology of Eye Diseases, 23–40. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2490-1_3.

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Abdi, Parisa, Mehrnaz Atighehchian, and Scott Hau. "Other Anterior Segment Applications of In Vivo Confocal Microscopy and Future Developments." In In Vivo Confocal Microscopy in Eye Disease, 153–70. London: Springer London, 2022. http://dx.doi.org/10.1007/978-1-4471-7517-9_7.

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Jȩdzierowska, Magdalena, Robert Koprowski, and Zygmunt Wróbel. "Imaging of the Anterior Eye Segment in the Evaluation of Corneal Dynamics." In Advances in Intelligent Systems and Computing, 63–73. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39796-2_6.

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Wang, Ke, Xiaohong Liu, Kang Zhang, Ting Chen, and Guangyu Wang. "Anterior Segment Eye Lesion Segmentation with Advanced Fusion Strategies and Auxiliary Tasks." In Medical Image Computing and Computer Assisted Intervention – MICCAI 2020, 656–64. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59722-1_63.

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Sugata, Yasuo, Masayasu Ito, Yukio Yamamoto, and Keiji Kato. "Imaging of the Anterior Segment of the Eye by a High Frequency Ultrasonograph." In Documenta Ophthalmologica Proceedings Series, 28–32. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0025-0_6.

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Conference papers on the topic "Anterior eye segment"

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Quellec, Gwenole, Katia Charriere, Mathieu Lamard, Beatrice Cochener, and Guy Cazuguel. "Normalizing videos of anterior eye segment surgeries." In 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2014. http://dx.doi.org/10.1109/embc.2014.6943544.

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Bakutkin, Valery V., Tatjana N. Semyonova, and O. Juzhakova. "Laser retinometry in surgery of anterior segment of eye." In International Symposium on Biomedical Optics Europe '94, edited by Rosario Brancato, Adolf F. Fercher, Pascal O. Rol, and A. S. Melamed. SPIE, 1995. http://dx.doi.org/10.1117/12.199249.

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Lim, Yiheng, Masahiro Yamanari, Young-Joo Hong, Shuichi Makita, Masahiro Miura, and Yoshiaki Yasuno. "Office based multi-functional anterior eye segment optical coherence tomography." In SPIE BiOS, edited by Tuan Vo-Dinh, Anita Mahadevan-Jansen, and Warren Grundfest. SPIE, 2012. http://dx.doi.org/10.1117/12.907707.

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Eom, Tae Joong, Young-Sik Yoo, Yong-Eun Lee, Beop-Min Kim, and Choun-Ki Joo. "Biomedical sensing and imaging for the anterior segment of the eye." In Fifth Asia Pacific Optical Sensors Conference, edited by Byoungho Lee, Sang-Bae Lee, and Yunjiang Rao. SPIE, 2015. http://dx.doi.org/10.1117/12.2185579.

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Rao, Bin, Song Hu, Li Li, Konstantin Maslov, and Lihong V. Wang. "In vivo label-free photoacoustic microscopy of the anterior segment of the mouse eye." In BiOS, edited by Alexander A. Oraevsky and Lihong V. Wang. SPIE, 2010. http://dx.doi.org/10.1117/12.843052.

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Zhu, Dexi, Meixiao Shen, and Lin Leng. "Ultra-long scan depth optical coherence tomography for imaging the anterior segment of human eye." In Photonics Asia, edited by Qingming Luo, Ying Gu, and Xingde D. Li. SPIE, 2012. http://dx.doi.org/10.1117/12.999403.

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Fraga, Vanessa de Miranda, Luciano Gonçalves do Nascimento Júnior, Davi Rodrigues de Sousa, Eduardo Pimentel Carneiro Braga, Alex John Sinema Alvarez, and Isabella Wanderley de Queiroga Evangelista. "Arteritic bilateral anterior ischemic optical neuropathy: case report." In XIII Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2021. http://dx.doi.org/10.5327/1516-3180.310.

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Introduction: Arteritic anterior ischemic optic neuropathy (AAION) is infarction in anterior segment of optic nerve in which there is thrombotic occlusion of short posterior ciliary arteries due to granulomatous inflammation of giant cell arteritis (ACG). Case report: Male patient, 66 years old, complaining of loss of vision in left eye (LE) for 28 days, and in right eye (RE) for 8 days, accompanied by left hemicranial headache, pulsatile, irradiation from frontal to cervical region, of strong intensity, prevalent at night. Report of pain on chewing, chills, night sweats, neck pain and headache for 2 months. On examination, there was no light perception and bilateral non-reactive pupils. At simple retinography, LE with pale optical disc (OD), attenuation of retinal vascularization, atrophic and whitish areas; RE with OD with undefined borders, peripapillary hemorrhages and areas of retinal pallor. At fluorescent retinography; LE without arterial filling; CBC, discrete anisocytosis, thrombocytosis and microcytosis; ESR, 71mm/h in first hour; CRP, 113.6 mg/L. At, doppler USG of temporal arteries, significant increase in thickness of the myointimal layer, causing hemodynamic repercussions, with monophasic flow. Conclusion: Meeting 4 of 5 criteria of American College of Rheumatology, diagnosis of AAION was made. The condition was already irreversible at the time of examination.
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Targowski, Piotr, Anna Szkulmowska, Iwona Gorczyńska, Maciej Szkulmowski, Andrzej Kowalczyk, and Bartłomiej J. Kałużny. "High Resolution Spectral Optical Coherence Tomography for Clinical Imaging of the Anterior Segment of the Eye." In European Conference on Biomedical Optics. Washington, D.C.: OSA, 2005. http://dx.doi.org/10.1364/ecbo.2005.ma1.

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Jungwirth, Johannes, Bernhard Baumann, Michael Pircher, Erich Götzinger, and Christoph K. Hitzenberger. "Imaging of the whole anterior eye segment with full-range complex spectral domain optical coherence tomography." In European Conference on Biomedical Optics. Washington, D.C.: OSA, 2009. http://dx.doi.org/10.1364/ecbo.2009.7372_1o.

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Maindron, C., M. Le Loir, B. Cochener, and M. Lamard. "Automatic correction of rotating ultrasound bio microscopy acquisitions for the segmentation of the eye anterior segment." In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6609711.

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