Corneal Asphericity Adjustment (Q Adjustment) in Myopic and Hyperopic Patients Undergoing Refractive Correction With Excimer Laser

February 15, 2011 updated by: Democritus University of Thrace
To study the postoperative results in myopic and hyperopic eyes treated with two different laser ablation algorithms (STD and F-CAT), both FDA approved.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

36

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Forty eight myopic (24 patients) and 24 hyperopic eyes (12 patients)

Description

Inclusion Criteria:

  • Myopic and hyperopic eyes eligible for LASIK or PRK refractive correction
  • Central corneal thickness more than 500 micrometers

Exclusion Criteria:

  • Topographies of less than 55% of successful total sampled area and eyes exhibiting asphericity variations, in either the horizontal or the vertical axis, greater than 0.2
  • Corneal scarring
  • Cataract surgery
  • Corneal ulceration
  • Topographical abnormalities

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Democritus University of Thrace

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2006

Primary Completion (Actual)

March 1, 2009

Study Completion (Actual)

May 1, 2009

Study Registration Dates

First Submitted

February 15, 2011

First Submitted That Met QC Criteria

February 15, 2011

First Posted (Estimate)

February 16, 2011

Study Record Updates

Last Update Posted (Estimate)

February 16, 2011

Last Update Submitted That Met QC Criteria

February 15, 2011

Last Verified

February 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Q-value

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Myopia

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Panama

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe