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Clinical Trial Summary

The purpose of this study is to examine the effect of the myopic optical defocus on the Humphrey Matrix 30-2 test.


Clinical Trial Description

The Humphery Matrix (Zeiss, Dublin, California, USA; in cooperation with Welch Allyn, Skaneateles, New York, USA), which is a recently developed version of FDT perimetry, showed more improved technology to detect early glaucomatous damage. The user's guide for the Humphrey Matrix (Humphrey® matrix visual field instrument user's guide. Zeiss, Dublin, California, USA; in cooperation with Welch Allyn, Skaneateles, New York, USA; 2003) suggests that myopic refractive errors more than -3.0 D need to be corrected before the 30-2 test. However, the proper correction of the optical defocus is not always easy because of a lack of trial frame.

The purpose of the present study is twofold. At first, the influence of the low-grade myopia on the Humphery Matrix 30-2 test will be evaluated and compared to the effect of moderate-grade myopia. Secondly, the influence of myopic optical defocus and the glaucomatous visual field damage on the pattern deviation plot change according to the severity of glaucomatous visual field damage will be estimated. ;


Study Design

Observational Model: Case-Only, Time Perspective: Prospective


Related Conditions & MeSH terms


NCT number NCT00638430
Study type Observational
Source Samsung Medical Center
Contact
Status Completed
Phase N/A
Start date March 2007
Completion date March 2008

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