View clinical trials related to Posterior Capsule Opacification.
Filter by:ABSTRACT PURPOSE: To evaluate a new technique of posterior capsulorhexis using air support to treat primary posterior capsular opacification (PCO) during cataract extraction surgery or to prevent post-operative PCO. SETTING: 1-Ophthalmology department, Faculty of medicine, Minia University, El-Minia, Egypt. 2- Security Forces Hospital, Ophthalmology Department, Riyadh, Kingdom of Saudi Arabia. DESIGN: Prospective, randomized case-control comparative study. Methods: 100 eyes of 100 patients with a mean age of 63.3 years with dens cataract. Fifty of them ( group 1) with primary PCO (discovered during the operations) and fifty (group 2) with clear posterior capsule. All cases undergone phacoemulsification, posterior capsulorhexis using the air to support the posterior capsule and separate it from the vitreous (the novel technique will be discussed later). Then IOL implantations wear done in the bag between the anterior and posterior capsular rim. Each patient was evaluated for the following:- visual acuity (UCVA and BCVA), intraocular pressure, intra ocular lens stability, visual axis opacification and posterior segment complications as retinal break, retinal detachment or cystoid macular oedema.
The most frequent long-term complication of cataract surgery remains to be posterior capsule opacification (PCO). During the past decades many new intraocular lenses (IOL) with optimized lens material and design were introduced. We propose a study comparing three acrylic single-piece IOLs with different design and hydrophobic material. All IOLs (Hoya NY-60, HOYA Surgical Optics GmbH; EyeCee One, Nidek Co., Aichi, Japan) are commercially available and are used for routine cataract surgery. In this study a comparison of PCO score of all two IOLs, a comparison of optic quality with wavefront analyses, visual acuity, contrast sensitivity, IOL decentration and tilt, slitlamp examination, fibrosis, glistening intensity (subjectively scored), YAG capsulotomy rate, and safety parameters (IOL related adverse reactions) of the investigated IOLs will be performed. Since PCO develops slowly within years, a long-term follow-up of three years will be necessary. As those IOLs are currently often implanted IOLs, their performance on PCO development and their optical quality is of high interest for the ophthalmologic community.
It has been hypothesized that potential effects of laser Nd: YAG laser posterior capsulotomy may affect macular pigment as well as choroidal thickness, macular thickness and anterior chamber parameters, so it was aimed to investigate possible effects of Nd: YAG laser posterior capsulotomy on macular pigment optical density, choroidal thickness, macular thickness and anterior chamber parameters in cases with posterior capsule opacification in this study.
To compare the efficacy of a Brinzolamide/Brimonidine fixed combination (FC) with Brimonidine 0.2% in preventing intraocular pressure (IOP) elevations after neodymium: yttrium-aluminum-garnet (Nd:YAG) laser posterior capsulotomy.
This study collects intra- and postoperative data from the patients´charts retrospectively and evaluates retro- and prospectively the rate of posterior capsule opacification (PCO) following implantation of the intraocular lens L 313.
Cataract, is a clouding of the lens in the eye gradually leading to reduction of the visual acuity. In most cases it can be managed with surgery, removing the own lens and replacing it with an artificial lens, intraocular lens (IOL). These lenses are made in different materials with different properties. Uveitis refers to an inflammation in the iris, ciliary body and choroid. Patients with this disease have an increased risk of developing cataract due to the inflammation itself and treatment with steroids. They also have an increased risk of complications during surgery and postoperatively. In this group the selection of IOL might be of greater importance. The aim of this prospective randomized controlled study is to compare the outcome of hydrophobic and hydrophilic intraocular lenses in patients with and without uveitis
The purpose of this study is to quantify the opacity of posterior capsule in pediatric cataract comparing two intraocular lens materials.
This prospective, randomized, clinical trial looks to compare children undergoing congenital cataract surgery with intraocular lens (IOL) implantation in terms of visual axis obscuration as well as postoperative complications such as glaucoma, inflammation and IOL centration when IOL fixation is performed using two different techniques : 1) conventional in the bag IOL implantation with anterior vitrectomy, and, 2) posterior optic capture of the IOL through the posterior capsulorhexis without any vitrectomy. 61 eyes of 61 children randomized to receiving IOL implantation using one of the two techniques will be followed up until 12 months postoperatively.
Age-related cataract is the main cause of impaired vision in the elderly population worldwide. The only treatment that can restore functional visual ability is cataract surgery where the opacified crystalline lens is removed by phacoemulsification and an artificial intraocular lens is implanted into the remaining capsular bag. Cataract operations are generally very successful, with a low risk of serious complications. The most common reason for impaired vision after uneventful cataract surgery in otherwise healthy eyes is the development of posterior capsule opacification (PCO). PCO is a physiological change (thickening, opacification and clouding) of the capsular bag expected after cataract surgery, because the lens epithelial cells (LECs) undergo hyperplasia and cellular migration. PCO is treated with Nd:YAG capsulotomy, a quick outpatient procedure that uses a laser to open a central hole in the posterior capsular bag. Modifications in IOL design and material lead to a decrease in the incidence of PCO. During the past two decades, refinements in surgical technique were made resulting in today's small incision phacoemulsification surgery. Nowadays a multitude of microincision IOLs are available, many of them similar but of course with some differences in regard to the chemical composition of the acrylic material and the IOL design. The purpose of this study is to compare the development of posterior capsule opacification (PCO) and the frequency of treatment between two different microincision IOLs over a period of 2 years.
Age-related cataract is the main cause of impaired vision in the elderly population worldwide. The only treatment that can restore functional visual ability is cataract surgery where the opacified crystalline lens is removed by phacoemulsification and an artificial intraocular lens is implanted into the remaining capsular bag. Cataract operations are generally very successful, with a low risk of serious complications. The most common reason for impaired vision after uneventful cataract surgery in otherwise healthy eyes is the development of posterior capsule opacification (PCO). PCO is a physiological change (thickening, opacification and clouding) of the capsular bag expected after cataract surgery, because the lens epithelial cells (LECs) undergo hyperplasia and cellular migration. PCO is treated with Nd:YAG capsulotomy, a quick outpatient procedure that uses a laser to open a central hole in the posterior capsular bag. Modifications in IOL design and material lead to a decrease in the incidence of PCO. During the past two decades, refinements in surgical technique were made resulting in today's small incision phacoemulsification surgery. Nowadays a multitude of microincision IOLs are available, many of them similar but of course with some differences in regard to the chemical composition of the acrylic material and the IOL design. The purpose of this study is to compare the development of posterior capsule opacification (PCO) and the frequency of treatment between two different microincision IOLs over a period of 4 years.