Journal ArticleDOI
Capsule measuring ring to predict capsular bag diameter and follow its course after foldable intraocular lens implantation
Mana Tehrani,H. Burkhard Dick,Frank Krummenauer,Gudrun Pfirrmann,Thomas Boyle,Bernhard M. Stoffelns +5 more
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TLDR
The extent of capsular bag shrinkage after cataract surgery with intraocular lens (IOL) implantation was evaluated and a regression formula of moderate validity was determined to predict capsular carrier size.Abstract:
Purpose: To evaluate the extent of capsular bag shrinkage after cataract surgery with intraocular lens (IOL) implantation and develop a regression formula to predict postoperative capsular bag size.
Setting: Eye Hospital, Johannes Gutenberg-University, Mainz, Germany.
Methods: The axial length (AL), anterior chamber depth, and corneal radius in 58 eyes were measured preoperatively. Cataract surgery was by phacoemulsification followed by implantation of a 3-piece, acrylic, posterior chamber IOL. The capsular bag diameter and anterior capsulorhexis were measured intraoperatively and 1 day and 1, 3, and 6 months postoperatively using a Koch capsule measuring ring (HumanOptics).
Results: The mean capsular bag size was 10.53 mm intraoperatively, 10.31 mm at 1 day, 9.62 mm at 1 month, 9.07 mm at 3 months, and 9.01 mm at 6 months. The mean capsular bag shrinkage over the entire postoperative period was 14.8% (P<.001). Of the parameters studied, only AL had a positive correlation with capsule shrinkage. The correlation was moderate but statistically significant (P = .001).
Conclusions: A correlation was found between capsular bag shrinkage and AL. Using preoperative biometric data, a regression formula of moderate validity was determined to predict capsular bag shrinkage.read more
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Patent
Adaptive optic lens and method of making
TL;DR: In this paper, the displacement structures are actuated by shape change polymer that adjusts a shape or other parameter in response to applied energy that in turn displaces a fluid media within the lens that actuates a flexible lens surface.
Journal ArticleDOI
Pediatric cataract: challenges and future directions
Anagha Medsinge,Ken K. Nischal +1 more
TL;DR: The etiology, preoperative evaluation including biometry, choice of intraocular lens, surgical techniques, and recent developments in the field of childhood cataract are reviewed, highlighting the need for future prospective studies.
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Accommodative intraocular lenses: current status.
TL;DR: The potential clinical benefits of accommodative IOL technology for both cataract patients and refractive patients may place accommodativeIOLs in a competitive position with multifocal IOLtechnology.
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Accommodating intraocular lens having peripherally actuated deflectable surface and method
Victor C. Esch,John A. Scholl,Terah Whiting Smiley,Patrick Myall,Bill Evans,Barry Cheskin,Henry Wu +6 more
TL;DR: In this paper, an accommodating intraocular lens is provided in which a deflectable lens element is anchored to a substrate along its optical axis to define a fluid filled space, and fluid-filled haptics disposed in fluid communication with the space vary the fluid volume in the space responsive to forces applied by the ciliary muscles, thereby causing the periphery of the lens element to deflect relative to the substrate.
Journal ArticleDOI
Capsular tension rings and related devices: current concepts.
Hasanee K,Mark S. Butler,Ahmed +2 more
TL;DR: Continual advances in capsular tension device technology have allowed for increased safety and efficacy in performing cataract surgery in patients with zonular weakness with newer devices being evolved to manage more profound cases.
References
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Journal ArticleDOI
Complications of intraocular lenses. A historical and histopathological review
David J. Apple,Nick Mamalis,Katherine Loftfield,Joseph M. Googe,Linda C. Novak,Dolores Kavka-Van Norman,Steven E. Brady,Randall J. Olson +7 more
TL;DR: It is hoped that this review will provide insights into the pathogenesis of IOL complications, enhancing the current success of implant procedures and stimulating further basic and clinical research in this area.
Journal ArticleDOI
Relationship between intraocular lens biomaterials and posterior capsule opacification.
Paul G. Ursell,David J. Spalton,Milind V. Pande,Emma J. Hollick,Sarah Barman,James F. Boyce,Kate Tilling +6 more
TL;DR: Intraocular lenses made from AcrySof were associated with a significantly reduced degree of PCO, and was associated with less PCO than PMMA, silicone, and silicone lenses analyzed 2 years postoperatively.
Journal ArticleDOI
Complications of foldable intraocular lenses requiring explantation or secondary intervention--2003 survey update
TL;DR: Accurate IOL power measurements as well as meticulous surgical technique, IOL loading and insertion, and proper patient counseling/selection remain the most important factors in avoiding complications with foldable IOLs.
Journal ArticleDOI
Quantitative Comparison of Posterior Capsule Opacification After Polymethylmethacrylate, Silicone, and Soft Acrylic Intraocular Lens Implantation
TL;DR: Based on thePCO value and capsulotomy rate, the PCO was more extensive with the PMMA lens than with either the silicone or soft acrylic lens, which led to visual acuity loss.
Journal ArticleDOI
Complications of intraocular lenses
TL;DR: Les principales complications observees sont un œdeme maculaire cystoide (3,3%), une iritis ou une uveite chronique (1,1%) and une opacification de the capsule posterieure (2,5%) survenant surtout chez les sujets traites par une extraction extracapsulaire de the cataracte