Comparison of Ultrasonic Pachymetry With Orbscan in Corneal Haze

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

40 participants

Study Classification

OBSERVATIONAL

Study Start Date

2005-07-31

Study Completion Date

2006-06-30

Brief Summary

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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.

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Detailed Description

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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.

Conditions

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Corneal Opacity

Study Design

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Observational Model Type

DEFINED_POPULATION

Study Time Perspective

OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients with significant corneal haze on slit-lamp are included in the study group. 50 eyes of 50 age-matched patients with normal eye and clear cornea are included in the control group. Only one eye of each subject is included.

Minimum Eligible Age

18 Years

Maximum Eligible Age

71 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes