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Retinal nerve fiber layer thickness in recovered and persistent amblyopia

Authors Miki A, Shirakashi M, Yaoeda K, Kabasawa Y, Ueki S, Takagi M, Abe H

Published 17 September 2010 Volume 2010:4 Pages 1061—1064


Review by Single-blind

Peer reviewer comments 2

Atsushi Miki1,2, Motohiro Shirakashi1, Kiyoshi Yaoeda1, Yu Kabasawa1, Satoshi Ueki1, Mineo Takagi1, Haruki Abe1
1Department of Ophthalmology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan; 2Department of Ophthalmology, Kawasaki Medical School, Okayama, Japan

Purpose: To investigate, using optical coherence tomography (OCT), whether retinal nerve fiber layer thickness (RNFLT) is affected in amblyopic eyes.
Methods: Using OCT (Stratus OCT™ [Carl Zeiss, Dublin, CA]), the RNFLT was measured in 26 patients with persistent unilateral amblyopia and in 25 patients with recovered unilateral amblyopia. The RNFLT was compared between the affected and fellow eyes in patients with persistent amblyopia and in those with recovered amblyopia, and between the amblyopic eyes of patients with persistent amblyopia and the previously amblyopic eyes of patients with recovered amblyopia.
Results: In patients with persistent amblyopia and in those with recovered amblyopia, the affected eyes were significantly more hyperopic than the fellow eyes. The average (±standard deviation) RNFLT measured 105.5 ± 14.0 µm for the persistently amblyopic eyes; this value did not significantly differ from that of the fellow eyes (105.2 ± 13.0 µm) or the previously amblyopic eyes of recovered amblyopia (107.1 ± 11.7 µm). Also, logistic regression analysis adjusting for refraction showed no significant difference in the RNFLT between the persistently amblyopic eyes and the previously amblyopic eyes.
Conclusions: Our results indicate that there is no significant change in the RNFLT in amblyopic eyes.

Keywords: optical coherence tomography, retinal nerve fiber layer thickness, amblyopia

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