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Surgical techniques for the management of a dislocated posterior chamber intraocular lens
Published in A Peyman MD Gholam, A Meffert MD Stephen, D Conway MD FACS Mandi, Chiasson Trisha, Vitreoretinal Surgical Techniques, 2019
William E Smiddy, Harry W Flynn Jr
Posterior chamber intraocular lens (PC-IOL) dislocation occurs due to suboptimal posterior capsule support. The most common setting is following posterior capsular rupture during cataract extraction, a circumstance that may be increasingly common since it has become widely recognized that PC-IOLs may be implanted even after the posterior capsule has been ruptured. The early postoperative dislocation is frequently caused by unknowingly placing part or all of the IOL through a posterior capsular defect onto the anterior hyaloid, or misjudging haptic placement or capsular support. When dislocation occurs more than a few days or weeks after surgery, it may be the result of spontaneous IOL haptic rotation away from the meridians of posterior capsule remnants or zonular dehiscence. Dislocation months or years after placement is even less common, and may be due to traumatic1 or spontaneous loss of zonular support, particularly in eyes with pseudoexfoliation syndrome.2
Combined Cataract and Glaucoma Surgery
Published in Neil T. Choplin, Carlo E. Traverso, Atlas of Glaucoma, 2014
Arvind Neelakantan, Mary Fran Smith, Maher M. Fanous, Mark B. Sherwood
Glaucoma patients frequently have pupils that dilate poorly, either because of sphincter fibrosis from years of miotic therapy, posterior synechiae, or from primary conditions, such as pseudoexfoliation syndrome (Figure 19.3). The surgeon therefore may need to enlarge the pupil in order safely to perform phacoemulsification. Figures 19.4 through 19.7 show management options for a small pupil.
Prediction Error of Intraocular Lens Power Calculation in Very Elderly Patients over 90 Years Old
Published in Current Eye Research, 2021
Yusuke Koga, Kentaro Kojima, Kengo Yoshii, Natsuki Kusada, Yu Kagitani, Takanori Aoki, Noriko Horiuchi, Koji Kitazawa, Chie Sotozono
Fisher’s exact test was used to compare the gender ratio and prevalence of pseudoexfoliation syndrome. For comparison of age, preoperative BCVA, AL, average corneal power, target diopter, and arithmetic and absolute PE values, we conducted the Mann–Whitney U-tests. The correlation among age, AL, and absolute PE was determined by performing Spearman’s correlation analysis. Fisher’s exact test, the Mann–Whitney U-test, and Spearman’s correlation analysis were performed using Easy R (Saitama Medical Center, Jichi Medical University, Saitama, Japan), which is a graphical user interface for R (The R Foundation for Statistical Computing, Vienna, Austria). More precisely, it is a modified version of R commander with added statistical functions that are frequently used in biostatistics.16
Correlation of the intronic LOXL1 polymorphism rs11638944 with pseudoexfoliation syndrome and glaucoma in a Greek population
Published in Ophthalmic Genetics, 2021
Maria-Kyriaki Papadopoulou, Irini Chatziralli, Konstantina Tzika, Dimitrios Chiras, George Kitsos, Christos Kroupis
Pseudoexfoliation syndrome was defined by the presence of typical exfoliation material on the anterior lens capsule and/or at the pupillary margin in one or both eyes with a normal optic disc and visual field and IOP≤21 mm Hg in both eyes. Inclusion criteria for POAG patients were untreated IOP≥22 mm Hg on at least two diurnal curves, open-normal angle, glaucomatous optic disc and at least three Humphrey visual field tests with glaucomatous defects. Patients with secondary or closed-angle glaucoma were excluded. The criteria for the diagnosis of POAG were according to the guidelines of the European Glaucoma Society (28). Besides the signs of OAG, PXG was defined by the presence of characteristic slit-lamp findings, including exfoliation deposits on the anterior lens capsule and/or at the pupillary margin in one or both eyes.
Static and dynamic pupil characteristics in pseudoexfoliation syndrome and glaucoma
Published in Clinical and Experimental Optometry, 2020
Kemal Tekin, Hasan Kiziltoprak, Mehmet Ali Sekeroglu, Esat Yetkin, Serdar Bayraktar, Pelin Yilmazbas
Pseudoexfoliation syndrome (PES) is a complex and age‐related systemic disorder characterised by the progressive accumulation of abnormal extracellular pseudoexfoliative material in ocular tissues.2015 This accumulation could be detected in almost all the structures of the anterior ocular segment including ciliary body, iris, iridocorneal angle, lens capsule, zonules and cornea.2015 Detecting PES is important since it might be associated with a broad spectrum of ocular manifestations including increased intraocular pressure, cataract formation, zonular instability and phacodonesis, blood‐aqueous barrier dysfunction and inflammation, keratopathy and also markedly increased intra‐operative and post‐operative complications such as insufficient mydriasis, posterior capsule rupture, intraocular lens subluxation, and posterior synechiae.2015 Furthermore, PES is considered to be the most common identifiable reason of open‐angle glaucoma.1994 Pseudoexfoliation glaucoma (PEG) is a common cause of blindness worldwide and tends to be more progressive and serious compared to primary open‐angle glaucoma.1994