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Cataract clinical trials

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NCT ID: NCT00721253 Completed - Cataract Clinical Trials

Visual Outcomes of Subjects Bilaterally Implanted With ReSTOR Aspheric +4 vs. Tecnis or Acri.LISA

Start date: July 2007
Phase: Phase 4
Study type: Interventional

This is a study to compare visual outcomes of subjects bilaterally implanted w/ReSTOR to subjects bilaterally implanted with the Tecnis Multifocal Intraocular Lens (IOL) or Acri.LISA IOL

NCT ID: NCT00720005 Completed - Cataract Clinical Trials

Evaluation of the Aspheric ReSTOR IOL After Routine Cataract Extraction

Start date: September 2007
Phase: Phase 4
Study type: Observational

The purpose of this study is to evaluate the visual outcomes and patient satisfaction after bilateral implantation of the aspheric ReSTOR multifocal intraocular lens (IOL) and compare it to a historical control group of patients implanted bilaterally with the spherical ReSTOR multifocal

NCT ID: NCT00719732 Completed - Cataract Clinical Trials

Visual Function After Implantation of Bilateral AcrySof ReSTOR Aspheric +3

Start date: September 2007
Phase: Phase 4
Study type: Interventional

A prospective evaluation of the visual parameters in a series of patients bilaterally implanted with AcrySof ReSTOR +3 Intraocular Lens (IOL).

NCT ID: NCT00717080 Completed - Cataract Clinical Trials

The Role of Capsular Tension Ring (CTR) in Anterior Capsular Contraction

ACO
Start date: July 2008
Phase: Phase 4
Study type: Interventional

This is a Randomized Controlled Trial to study the role of Capsular Tension Ring in patients with Retinitis Pigmentosa

NCT ID: NCT00716339 Completed - Cataract Clinical Trials

Pseudophakic Accommodation

Start date: n/a
Phase: N/A
Study type: Interventional

Purpose: The aim of this study was to compare the effect of ciliary body training as proposed by manufacturers of accommodating IOLs and patient motivation on the pseudoaccommodative ability with a standard intraocular lens (SA60AT). Setting: Department of Ophthalmology, Medical University of Vienna. Methods: This randomized, controlled, examiner-masked study comprised 80 eyes of 40 patients that underwent standard cataract surgery. Patients were randomly assigned to a "motivated" or "non-motivated" (control) group. In the motivated group, subjects were told to take part in a special protocol to improve their near-reading ability after cataract surgery and were instructed not to use near adds for at least 3 months. Follow-up examinations included best-corrected distance visual acuity (VA), distance-corrected near VA, best-corrected near VA, defocus curve and reading speed, as well as pilocarpine-, cyclopentolate- and nearpoint-induced IOL shift assessed with partial coherence interferometry.

NCT ID: NCT00712244 Completed - Cataract Clinical Trials

DisCoVisc Versus DuoVisc, Healon5 and AmVisc Plus

Start date: October 2007
Phase: Phase 4
Study type: Interventional

A comparison of the ability of DisCoVisc to that of other ophthalmic viscosurgical devices (OVDs) (DuoVisc, Healon5 or Amvisc PLUS) regarding endothelial protection and anterior chamber space maintenance during non-eventful cataract surgery.

NCT ID: NCT00712231 Completed - Cataract Clinical Trials

Limitations of Using a Sheimpflug Image-Based Device for Measuring Anterior Chamber Depth in Pseudophakic Eyes

Start date: January 2008
Phase: N/A
Study type: Observational

There have been numerous studies comparing various ACD measurements in phakic eyes,while researches comparing ACD in pseudophakic eyes are less extensive. With the recent popularity of presbyopia correction, measuring the ACD will facilitate differentiating pseudophakic accommodation from pseudoaccommodation. It is thus mandatory to verify the accuracy of ACD measurement of these devices since the innovation of various IOLs in the recent decade makes this task more complicated. In this study, we will assess the limitations of using Pentacam for ACD measurement in pseudophakic eyes and compare Pentacam measurement with IOLMaster and A-scan measurements.

NCT ID: NCT00711347 Completed - Cataract Clinical Trials

Intraoperative Floppy Iris Syndrome

Start date: June 2007
Phase: Phase 4
Study type: Interventional

An assessment of the surgical performance of DisCoVisc compared to Healon5 during cataract surgery with intraocular lens implantation where miotic/small pupils or intraoperative Floppy Iris Syndrome exists.

NCT ID: NCT00710996 Completed - Cataract Clinical Trials

Blue Light Intraocular Lenses (IOLs) and Photostress

Start date: January 2008
Phase: N/A
Study type: Observational

To determine what effect a blue light filtering Intraocular Lens (IOL) has on macular pigment levels.

NCT ID: NCT00710931 Completed - Cataract Clinical Trials

Visual Function With Bilateral AcrySof® ReSTOR® Aspheric SN6AD1

Start date: October 2008
Phase: Phase 4
Study type: Interventional

The objective of this study is to prospectively evaluate the visual parameters in a series of patients after phacoemulsification cataract surgery in a series of patients bilaterally implanted with the AcrySof® ReSTOR® Aspheric +3.0 Intraocular Lens (IOL).