View clinical trials related to Cataract.
Filter by:Post-operative cystoid macular oedema (CMO) is a common complication causing visual loss following routine cataract surgery. This complication is more prevalent in eyes with excessive inflammation as they heal from surgery. Prostaglandin analogues (PGA) are the commonest first line drugs used in the long-term treatment of primary open angle glaucoma (POAG)- where they reduce the pathologically high pressure in the eye. Prostaglandins are inflammatory mediators. In the post-operative care of glaucoma patients undergoing cataract surgery, there is a clinical dilemma whether to stop or continue the use of prostaglandin eye drops. Clinical practice is completely dichotomized between continuing and stopping PGA treatment in the postoperative period. There is conflicting scientific literature on the effect of PGA on the incidence of CMO; and only a single randomized control trial (Miyake K, Arch Ophthalmol 1999, 117:34-40), where the post operative regime is not applicable to present practice, compared the incidence of CMO following routine cataract surgery in POAG on PGA.
The purpose of this clinical study is to compare the visual outcomes of the AcrySof IQ PanOptix Multifocal Intraocular Lens (IOL) Model TFNT00 against that of a monofocal lens, the AcrySof Monofocal IOL Model SN60AT, in order to demonstrate comparable distance vision and superior near and intermediate vision.
The vast majority of blindness is avoidable. The World Health Organization (WHO) estimates that 80% of cases of visual impairment could be prevented or reversed with early diagnosis and treatment. The leading causes of visual impairment are cataract and refractive error, followed by glaucoma, age-related macular degeneration (AMD), and diabetic retinopathy (DR). Loss of vision from these conditions is not inevitable; however, identifying at-risk cases and linking cases with appropriate care remain significant challenges. Worldwide, eye health care systems must determine optimal strategies for reaching people outside of their immediate orbit in order to reduce visual impairment. Visual impairment can be reduced by case detection of prevalent disease like cataract and refractive error, or by screening for early disease like glaucoma, AMD, and DR and preventing progression. Systems around the world have developed numerous approaches to both case detection and screening but there is very little research to support the choice of allocating resources to case detection or screening and little data exists on the cost effectiveness of the various approaches to each. VIEW II Pilot is a cluster-randomized trial to determine the effectiveness of different approaches to community-based case detection and screening for ocular disease. Communities in Nepal will be randomized to one of four arms: 1) a comprehensive ocular screening program, 2) a cataract camp-based program, 3) a community health worker-based program, and 4) no program.
This study will compare cataract patients before and after phacoemulsification. Evaluations will be performed before and 1 and 3 months following cataract surgery, including parameters of dry eye syndrome and MGD. Dry eye syndrome parameters included TBUT, Schirmer's test type I, Oxford staining score, and the Ocular Surface Disease Index (OSDI) Questionnaire. MGD parameters consisted of lipid layer thickness (LLT), lid margin abnormality, meibum quality, meibum expressibility, MG orifice obstruction, MGD stage, and MG dropout.
The purpose of the study is to demonstrate the safety and performance of ACRYSOF IQ extended depth of focus (EDF) intraocular lens (IOL) at Month 6. Depth of focus (DOF) is the amount of focal plane displacement behind a lens that does not degrade the image quality of a distant object. A larger DOF allows sharp images of closer objects and may provide improved vision at intermediate and near distances.
The purpose of this study is to confirm the effectiveness of the investigational lens in a Korean population, especially for visual performance, quality of vision, and subject satisfaction with the visual outcome, as well as the safety of the lens. This trial will be conducted in Korea.
the investigators will compare between the endothelial cell loss after phacoemulsification and extracapsular cataract extraction in management of senile cataract
This study investigate the change of the corneal endothelial cells in patients with type 2 diabetes after phacoemulsification with intraocular lens implantation.
Open Angle Glaucoma Subjects with Cataract treated with Cataract Surgery plus one trabecular micro-bypass stent and one suprachoroidal stent
A multi-disciplinary intervention will reduce inappropriate preoperative testing for cataract surgery. Despite multiple rigorous randomized controlled trials and meta-analyses showing that pre-operative testing for cataract surgery does not improve outcomes, pre-operative testing has not declined. A quality improvement initiative, which includes gaining senior leadership support, changing the culture of care, and elimination of pre-operative consultation visits for cataract surgery, to reduce inappropriate pre-operative testing. Quasi-experimental difference-in-difference analysis comparing the intervention arm (LAC+USC Medical Center) with the control arm (Harbor-UCLA Medical Center), 6 months prior and 6 months after the intervention. Generalized estimating equation models will adjust for age, gender, race/ethnicity, comorbidities and cluster by site.