Comprehensive Evaluation of Visual Function

Not Applicable

• Conditions: Visual Function
• Interventions: Device: Izon Wavefront-guided lenses; Device: Conventional lenses

• Registration Number: NCT00894192
• Lead Sponsor: The Chicago Lighthouse

Brief Summary

The purpose of this study is to assess the level of visual functioning in patients with various eye conditions while wearing different types of eyeglasses.

Detailed Description

The purpose of the research is to study the level of visual functioning in individuals with various eye conditions when using different types of eyeglass lenses. Therefore, the goal of this study is to determine factors that may account for variability in the visual functioning of individuals with a range of refractive errors and their ability to perform everyday activities when equipped with different types of lenses. We hypothesize that the subjects will perform visual tasks of function better when using iZon™ Wavefront-Guided Glasses than with conventional glasses. This hypothesis is based upon the glasses yielding better visual acuity and because the design of the glasses reduces the effects of glare. This research is important so that alternate treatments and vision correction may be implemented which will have a more beneficial impact on those with refractive errors and visual impairment.

Study Timeline

• Study Start: 2009-02
• Status Verified: 2009-05
• Study First Submitted: 2009-05-04
• Study First Submitted QC: 2009-05-05
• Last Update Submitted: 2009-05-05
• Study First Posted: 2009-05-06
• Last Update Posted: 2009-05-06
• Primary Completion: 2009-10
• Study Completion: 2009-12

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 300

Inclusion Criteria

• Have normal vision
• Are far-sighted or near-sighted
• Have no eye diseases Subjects aged 18 and over, who have refractive errors ranging from +5.0 to -5.0 and/or who have eye disease will be included in the study.

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Wavefront guided lenses	Izon Wavefront-guided lenses	-
Conventional lenses	Conventional lenses	-

Primary Outcome Measures

Name	Time	Method
Visual Acuity, and Contrast Sensitivity	Once a week

Trial Locations

Locations (1)

The Chicago Lighthouse; 🇺🇸 Chicago, Illinois, United States