Active clinical trials for "Cataract"

Cataract is a common complication in uveitis patients. Cataract operations with intraocular lens implantation are difficult in these patients because of complication due to the biocompatibility of the intraocular lens. In this study, uveal and capsular biocompatibility of two widely used acrylate intraocular lenses are compared.

The purpose of this study is to compare the ability of two different topical NSAIDs (non-steroidal anti-inflammatory medications used for pain relief) to reach the back of the eye and to stop inflammation. The study will conclude on the day of your cataract surgery.

Cataract is prevalent throughout the world and IOLs are routinely implanted after the extraction of the cataractous lens. It is the most frequently performed surgery in the United States with an estimated 2-3 million procedures performed annually. With the aging population on the rise, as well as the increasing popularity of refractive intraocular lenses, the number of intraocular surgeries continues to rise. Over the years, the surgical technique has evolved from intracapsular extraction to modern phacoemulsification. This development has helped with the evolution of IOLs as well. The IOLs have advanced extensively: different materials and designs are available, permitting implantation through smaller, sutureless incisions. Traditional IOLs are of monofocal design providing vision at one distance, typically far. Patients implanted with traditional monofocal IOLs usually require glasses for near distance tasks such as reading. The new multifocal IOLs offer the possibility of seeing well at more than one distance, without glasses or contacts. The AcrySof ReSTOR (Alcon Laboratories) uses apodized diffractive technology - a design that responds to how wide or small the eye's pupil might be - to provide near, intermediate, and distance vision. Clinical studies used to support the March 2005 FDA approval showed that 80% of people who received the lens did not use glasses for any activities after their cataract surgery; 84% who received the lens in both eyes had distance vision of 20/25 or better, with near vision of 20/32 or better. ReZoom (Advanced Medical Optics) is a multifocal refractive zonal IOL that distributes light over five optical zones to provide near, intermediate, and distance vision. The ReZoom is a second-generation multifocal and was FDA-approved in March 2005. In a European study of 215 patients, 93% of ReZoom recipients reported never or only occasionally needing glasses. The combined use of multifocal intraocular lenses is often a solution to best meet the patients' refractive needs. There has been speculation that the implantation of ReSTOR in one eye and ReZoom lens in the fellow eye can provide patients a larger range of useful vision in the near range. The purpose of this study is to evaluate visual outcome and patient satisfaction after implantation of a diffractive multifocal IOL (ReSTOR) in one eye and a refractive multifocal IOL (ReZoom) in the fellow eye after routine phacoemulsification and compare it to a control group of patients implanted bilaterally with ReSTOR with both eyes targeted for 0 to ±0.25 D, and to a group of patients implanted bilaterally with ReSTOR with the non-dominant eye targeted for +1.00 D and the dominant eye targeted for 0 to +0.25 D.

To compare the efficiency of the Infiniti vision system and the Series 20000 Legacy System phacoemulsification units during routine cataract extraction.

The purpose of this study is to compare two surgical techniques (high vacuum and low vacuum) on corneal endothelium after phacoemulsification.

-Does Honan balloon reduce intraocular pressure preoperatively?

Patients at least 40 years of age who are undergoing cataract surgery will be randomized to receive treatment with one of four groups of dexamethasone ophthalmic suspension or placebo eye drops to determine if the drops decrease inflammation and pain inside the eye and are safe after cataract surgery.

Monocentric clinical study to develop an imaging analysis algorithm for the Eyestar 900 to identify keratoconus corneas and improve biometry for intraocular lens calculations

Purpose: Characterize changes in intraocular pressure (IOP), IOP-lowering medications, and visual acuity (VA) through 3 years in patients undergoing combined phacoemulsification and excisional goniotomy with the Kahook Dual Blade (phaco-KDB), with simultaneous goniosynechialysis in cases of angle-closure glaucoma, by a single surgeon (A.H.) in King Fahd Hospital of the University, Dammam, Saudi Arabia. Methods: Prospective, non-comparative, uncontrolled, non-randomized interventional case series. Consecutive patients with medically-treated glaucoma and visually-significant cataract underwent combined surgery. Subgroup analysis of glaucoma subtypes was performed.

This study is a prospective, observational, randomized, controlled, paired eye, subject-masked design.