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Contrast sensitivity and color vision in eyes with retinitis pigmentosa and good visual acuity: correlations with SD-OCT findings.
Ophthalmic Surgery, Lasers & Imaging 2012 November
BACKGROUND AND OBJECTIVE: To investigate the morphological substrate of the changes in visual function in eyes with retinitis pigmentosa and good visual acuity using spectral-domain optical coherence tomography (SD-OCT).
PATIENTS AND METHODS: A total of 30 eyes of 17 patients with retinitis pigmentosa and visual acuity of 20/40 or better underwent contrast sensitivity and color vision testing. The retinal thickness at the fovea and macula and the length of the photoreceptor inner/outer segment (IS/OS) junction were assessed by SD-OCT. Structural-functional correlations were investigated.
RESULTS: Contrast sensitivity correlated well with IS/OS length (Spearman r = 0.719, P < .001) and foveal thickness (r = 0.672, P < .001) and moderately with macular thickness (r = 0.422, P = .025). Moreover, color vision correlated significantly with IS/OS length (r = -0.725, P < .001) and foveal thickness (r = -0.661, P < .001).
CONCLUSION: In eyes with retinitis pigmentosa and good visual acuity, the structural changes observed on OCT scans correspond well to subtle measures of central visual function, complementary to visual acuity testing.
PATIENTS AND METHODS: A total of 30 eyes of 17 patients with retinitis pigmentosa and visual acuity of 20/40 or better underwent contrast sensitivity and color vision testing. The retinal thickness at the fovea and macula and the length of the photoreceptor inner/outer segment (IS/OS) junction were assessed by SD-OCT. Structural-functional correlations were investigated.
RESULTS: Contrast sensitivity correlated well with IS/OS length (Spearman r = 0.719, P < .001) and foveal thickness (r = 0.672, P < .001) and moderately with macular thickness (r = 0.422, P = .025). Moreover, color vision correlated significantly with IS/OS length (r = -0.725, P < .001) and foveal thickness (r = -0.661, P < .001).
CONCLUSION: In eyes with retinitis pigmentosa and good visual acuity, the structural changes observed on OCT scans correspond well to subtle measures of central visual function, complementary to visual acuity testing.
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