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1.
Clin Ophthalmol ; 4: 1025-8, 2010 Sep 20.
Article in English | MEDLINE | ID: mdl-20922037

ABSTRACT

PURPOSE: To investigate the characteristics of optic disc parameters in amblyopic eyes in which retinal involvement is uncertain. METHODS: A total of 44 patients with a history of unilateral amblyopia (27 patients with persistent amblyopia and 17 patients with resolved amblyopia) were examined using the Heidelberg Retina Tomograph (HRT) II. Parameters examined included disc area, cup area, cup volume, rim area, rim volume, cup-to-disc area ratio, and mean retinal nerve fiber layer thickness. RESULTS: In patients with persistent amblyopia, the amblyopic eyes were significantly more hyperopic than the fellow eyes. In the HRT parameters, there were no significant differences between the amblyopic and fellow eyes. In addition, after adjusting for refraction, the presence of strabismus, and the disc area, there was no significant difference in any HRT parameter between the amblyopic eyes of patients with persistent amblyopia and the previously amblyopic eyes of patients with resolved amblyopia. CONCLUSIONS: We did not find any strong evidence for the deformity of the optic disc of amblyopic eyes.

2.
Clin Ophthalmol ; 4: 1061-4, 2010 Sep 20.
Article in English | MEDLINE | ID: mdl-20922043

ABSTRACT

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.

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