Clinical Trial: Comparison of Ultrasonic Pachymetry With Orbscan in Corneal Haze

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Comparison of Ultrasonic Pachymetry With Orbscan in Corneal Haze

Brief Summary: This study is planned to compare the results of ultrasonic and Orbscan pachymetry in corneal haze not related to surgery. Corneal haze is graded with slit-lamp by a single examiner. Ultrasonic and Orbscan II pachymetry measurements are obtained. Paired t and Kruskal-Wallis tests are used to evaluate the difference between ultrasonic and Orbscan pachymetry measurements. Correlation of the two methods and haze grade is determined with Kendall’s tau-b correlation analysis.

Detailed Summary: We planned this study to compare the results of ultrasonic and Orbscan pachymetry in corneal haze not related to surgery. In this institutional based, prospective, controlled clinical trial subjects with corneal haze not related to surgery are included. Normal eyes are used as control group to calculate the customized acoustic factor. Corneal haze is graded with slit-lamp by a single examiner. Ultrasonic and Orbscan II pachymetry measurements are obtained by one technician each masked to the other measurement. Paired t and Kruskal-Wallis tests are used to evaluate the difference between ultrasonic and Orbscan pachymetry measurements. Correlation of the two methods and haze grade is determined with Kendall’s tau-b correlation analysis. According to the results of the study, we will determine which method is accurate in subjects with corneal haze.
Sponsor: Baskent University

Current Primary Outcome:

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Information By: Baskent University

Dates:
Date Received: February 21, 2007
Date Started: July 2005
Date Completion: June 2006
Last Updated: February 21, 2007
Last Verified: February 2007