View clinical trials related to Cataracts.
Filter by:Cataract is the clouding of the lens of the eye, which initially prevents clear vision and eventually progresses to blindness if left untreated. Cataract remains the leading cause of blindness and an important cause of visual impairment across the globe. Cataract surgery by ultrasonic phacoemulsification is the most common surgery practiced in France (600 000/year) Two sub-categories of phacoemulsification coexist : Endocapsulars techniques represented by Divide-and-Conquer and Phaco-Chop ; and Supracapsular techniques mainly represented by Subluxation (similar to Tilt-and-Tumble) The corneal endothelium plays an important role in maintaining the dehydrated state and the transparency of the cornea. Some degree of endothelial cell loss invariably occurs in all types of cataract surgery but the amount of endothelial cell loss may varies with the type of surgical technique The aim of the study is to evaluate the density of the central corneal endothelial cells before and after cataract surgery comparing two phacoemulsification techniques (Divide-and-Conquer vs Subluxation)
The purpose of this study is to demonstrate that the Centurion® Vision System (CVS) used with the 45° Balanced Tip will result in less Cumulative Dissipated Energy (CDE) than the lnfiniti® Vision System (IVS) used with the 45° Mini-Flared Kelman (MFK) tip during cataract extraction surgery via phacoemulsification of cataract grades NII- NIV [Lens opacities classification system II (LOCSII)].
Since femtosecond laser was approved for cataract surgery by FDA in 2010, femtosecond laser assisted cataract surgery (FLACS) has demonstrated high precision of capsulotomy, reduced phacoemulsification power and time, and comparable refractive outcome in clinic. It is still unknown whether there are toxic substances produced due to photochemical or high-energy physical effect of femtosecond laser during FLACS.
The purpose of this study is to evaluate the safety and performance of the SBL-3 intraocular lens.
The purpose of this study is to investigate the performance of LenSx® Laser in femtosecond laser-assisted cataract surgery (FLACS) in real-world medical practice in Chinese patients.
The overall objective is to determine the visual outcomes and cost to perform Manual Small Incision Cataract Surgery (MSICS) in a small cohort at an academic medical center in the United States. The primary outcome measure will be the percentage of the study group achieving a post operative visual acuity 20/40 Snellen. This percentage will be compared to historical cohorts reported for phacoemulsification cataract surgery (PCS), when performed in academic centers. A secondary outcome will be to determine the actual institutional cost of providing MSICS in the setting of an academic medical center. The hypothesis is that MSICS is appropriate for a teaching environment (as evidenced by a comparable rate of 20/40 acuity or better at 90 days post op, as compared to PCS), and can be provided at a cost that makes visual rehabilitation affordable to the uninsured and underinsured.
The proposed study will recruit patients with mild to moderate Fuch's dystrophy who need cataract surgery alone. They will be randomly assigned to receive either spheric or aspheric lenses. If both eyes of a patient need surgery, we will implant the same type of lens in each eye in order to prevent imbalanced vision. We will measure their contrast sensitivity and higher order aberrations before surgery and 3 months after surgery. We will compare the change in these values between the two groups.
The purpose of this study is to use a special eye imaging technique, anterior segment optical coherence tomography (AS-OCT), to image the lens (the curved, transparent part of the eye that helps you to see clearly by directing images of light onto the back of your eye) and note any changes in exfoliation syndrome. Exfoliation syndrome is a common condition that has many ways of showing up in the eye, including the formation of deposits in the eye, shakiness of the lens that can complicate cataract surgery, and a higher chance of developing a type of glaucoma called exfoliation glaucoma. In this study we plan to collect images and measure exfoliation deposits on the lens with AS-OCT, which can take high resolution pictures of the eye without requiring contact with the eye. We will compare lens images of subjects with exfoliation syndrome to those of subjects with primary open angle glaucoma and cataracts. This type of imaging could be used in patients with known diagnosis of exfoliation syndrome to track disease progression and see how they respond to possible treatments. We also hope that with this imaging technology we can detect early changes in currently unaffected eyes, which could be useful for predicting which patients may develop the disease.
The purpose of this study is to determine whether IBI-10090 injection is effective in the treatment of inflammation associated with cataract surgery.
The aim of this study was to compare the intraoperative efficiency, safety and postoperative outcomes of cataract surgery with two different "high-fluidic" settings.