J Korean Ophthalmol Soc.  1997 Jun;38(6):1000-1005.

Reproducibility of Retinal Nerve Fiber Layer Thickness Evaluation by Nerve Fiber Analyzer

  • 1Department of Ophthalmology, Ewha Womans University, Mokdong Hospital, Seoul, Korea.


The Nerve Fiber Layer Anlyzer (LDT Inc., U.S.A.) is a scanning laser polarimetric ophthalmoscopy that uses the polarizing properties of the retinal nerve fiber layer. I performed 10 consecutive measurements from 15degrees peripapillary area in 10 normal eyes and 10 glaucomatous eyes to evaluate the reproducibility of the instrument. The nerve fiber layer thickness was are 76.8+/-9.0m for normal subjects and 81.5+/-8.4m for galucoma patients. The mean coeffitient of variation of the 1.5 disc diameters (15degrees) for normal subjects was 11.6(3.14-11.27) and for glaucoma eyes was 10.4(2.4612.46). This results indicate that the reproducibility of NFA was good in measuring the retinal nerve fiber layer thickness. Further investigation seems warranted to compare normal and glaucomatous eyes.


Reproducibility; Nerve Fiber Analyzer; Retinal nerve fiber layer thickness
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