PURPOSE: To describe longitudinal structure/function correlations in eyes with progressive reticular pseudodrusen (RPD). METHODS: Thirteen eyes of 12 patients with exclusively RPD in the posterior pole were included (75.1 ± 5.7 years). All patients underwent spectral-domain optical coherence tomography (SD-OCT), confocal scanning laser ophthalmoscopy (cSLO), and multifocal electroretinography (mfERG) at baseline and 12-month follow-up. Size of retinal area affected by RPD, number and stages of RPD lesions, and choroidal thickness (CT) were quantified at baseline and at follow-up visit. Amplitudes obtained by mfERG in RPD eyes at baseline and follow-up were analyzed and correlated to morphologic changes. Eyes were compared to those of age-matched healthy controls. RESULTS: The total number of RPD lesions increased from 540 at baseline to 667 at 12-month follow-up. Mean CT was 198.5 ± 69.3 μm at baseline (control group 263.5 ± 42.6 μm; P = 0.005) and 189.2 ± 65.3 μm at follow-up (P < 0.001) (control group 265 ± 47.8 μm; P = 0.74). A mean growth of RPD-affected area of 3.3 mm(2) was measured. Multifocal ERG amplitudes decreased in both the study and control groups to a similar extent. Amplitudes differed significantly at the follow-up time point when compared between RPD-affected and nonaffected areas within the same eye. No correlations between changes of morphologic parameters and mfERG amplitude changes were found. CONCLUSIONS: Multifocal ERG allows for detecting a decline of function over time in eyes with progressive RPD. Yet functional decline could not be correlated to changes in individual morphologic parameters. Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.
PURPOSE: To describe longitudinal structure/function correlations in eyes with progressive reticular pseudodrusen (RPD). METHODS: Thirteen eyes of 12 patients with exclusively RPD in the posterior pole were included (75.1 ± 5.7 years). All patients underwent spectral-domain optical coherence tomography (SD-OCT), confocal scanning laser ophthalmoscopy (cSLO), and multifocal electroretinography (mfERG) at baseline and 12-month follow-up. Size of retinal area affected by RPD, number and stages of RPD lesions, and choroidal thickness (CT) were quantified at baseline and at follow-up visit. Amplitudes obtained by mfERG in RPD eyes at baseline and follow-up were analyzed and correlated to morphologic changes. Eyes were compared to those of age-matched healthy controls. RESULTS: The total number of RPD lesions increased from 540 at baseline to 667 at 12-month follow-up. Mean CT was 198.5 ± 69.3 μm at baseline (control group 263.5 ± 42.6 μm; P = 0.005) and 189.2 ± 65.3 μm at follow-up (P < 0.001) (control group 265 ± 47.8 μm; P = 0.74). A mean growth of RPD-affected area of 3.3 mm(2) was measured. Multifocal ERG amplitudes decreased in both the study and control groups to a similar extent. Amplitudes differed significantly at the follow-up time point when compared between RPD-affected and nonaffected areas within the same eye. No correlations between changes of morphologic parameters and mfERG amplitude changes were found. CONCLUSIONS: Multifocal ERG allows for detecting a decline of function over time in eyes with progressive RPD. Yet functional decline could not be correlated to changes in individual morphologic parameters. Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.
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