A Prospective Clinical Research Project Evaluating The Effects of Soft Contact Lenses on Higher Order Visual Aberrations

Stopped early

Conditions studied: Ocular Refractive Aberrations

In brief

High order aberrations (HOA) are visual phenomena that decrease quality of vision. Examples of high order aberration are glare, halos, decreased contrast sensitivity and shape distortion. They are caused by slight imperfections or distortions in the corneal surface. HOA are currently measured using a variety of FDA approved devices. For this study, the LADARWave (Alcon) will be used to measure HOA. This device uses a harmless beam of light. It is FDA approved and non-invasive. Contact lens induced high order aberrations have never been measured and reported in the literature. This work may provide information to guide future contact lens design.

Key facts

Study ID

NCT00344864

Run by

University of Texas Southwestern Medical Center

People needed

30

Starts

2006-01-01

Expected to finish

2007-04-01

Last updated by the study team

2011-03-23

Who can join

Age: 18 and older, up to 35. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• All patients of any race and sex between the ages of 18-35 years of age who are not currently wearing contact lenses at their initial presentation. Only patients who voluntarily agree to participate in the study will be included. These potential subjects would be selected after reviewing and signing the Informed Consent (IC) as well as HIPAA authorization forms. The Principal Investigator (PI) or his designee will introduce the study to the patient, thoroughly explaining the details of the study. Copies of the forms will be placed in the patient medical record as well as given to study patient.

You may not qualify if…

• Patients under the age of 18 or over the age of 35 will be excluded. Patients with any ocular pathology, previous eye surgery and/or uveitis will be excluded. Also, any patient who does not choose to participate will be excluded.

Where it is running

• Aston Ambulatory Care Center — Dallas, Texas, United States
• UTSW Medical Center At Dallas — Dallas, Texas, United States

Full record on ClinicalTrials.gov

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