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  • Title: Correlation of SD-OCT features and retinal sensitivity in neovascular age-related macular degeneration.
    Author: Sulzbacher F, Kiss C, Kaider A, Eisenkoelbl S, Munk M, Roberts P, Sacu S, Schmidt-Erfurth U.
    Journal: Invest Ophthalmol Vis Sci; 2012 Sep 21; 53(10):6448-55. PubMed ID: 22918631.
    Abstract:
    PURPOSE: To correlate retinal sensitivity in patients with neovascular age-related macular degeneration (AMD) with specific characteristics of retinal morphology. METHODS: Thirty eyes of 30 patients presenting with active choroidal neovascularization were examined by spectral domain optical coherence tomography (SD-OCT) and microperimetry (MP-1). Image-processing software was used to match a fundus photographic (FP) MP-1 image with an infrared+OCT SD-OCT image. Each MP test point for retinal sensitivity was positioned at the corresponding SD-OCT location, and the microperimetric results were evaluated. RESULTS: An intact retinal configuration was associated with a median retinal sensitivity of 15.5 dB (quartiles: 12 dB, 18 dB). The median retinal sensitivities were 0 dB (quartiles: 0 dB, 1 dB) for the neovascular complex, 4 dB (0 dB, 9 dB) for the subretinal fluid, 1 dB (0 dB, 6 dB) for the intraretinal fluid, and 0 dB (0 dB, 3 dB) for intraretinal cysts. Pigment epithelium detachment was associated with a median retinal sensitivity of 3 dB (0 dB, 8 dB), and subretinal drusen had a median value of 8 dB (5 dB, 12 dB). Deep retinal layer analyses gave low median retinal sensitivities of 0 dB (0 dB, 3 dB) for an absent retinal pigment epithelium layer and 1 dB (0 dB, 5 dB) for an absent photoreceptor layer. CONCLUSIONS: Superimposition of morphological SD-OCT features and microperimetric retinal sensitivity allowed exact determination of the differential impact of retinal alteration on the corresponding sensitivity. Individual OCT-related indicators of neurosensory integrity were distinctly correlated with visual function. "Morphofunctional" findings could be relevant as prognostic factors and for (re)treatment decisions. (https://www.clinicaltrialsregister.eu/ number, 2006-005684-26.).
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