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      Comparison of Achromatic and Blue-on-Yellow Perimetry in Patients with Resolved Central Serous Chorioretinopathy

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          Central serous chorioretinopathy (CSCR) is a disorder characterized by the serous detachment of the sensory retina in the posterior pole. Although CSCR usually resolves spontaneously, the patients may notice residual visual deficits, despite recovering normal visual acuity. The aim of this study is to compare the blue-on-yellow perimetric parameters with conventional automated perimetric parameters in the detection of visual deficits in patients with resolved CSCR. Eighteen patients who had spontaneous recovered from CSCR were enrolled this study. All subjects were examined twice with each type of perimetry. Wilcoxon test was used for statistical analysis. The achromatic perimetric mean deviation values were significantly higher in patients with CSCR than in the control group, while statistically a significant difference was determined for all of blue-on-yellow perimetric values. In conclusion the loss of central retinal sensitivity remains after resolution of the CSCR even if the visual acuity has recovered to normal. Blue-on-yellow perimetry is more sensitive than achromatic perimetry to reveal this central sensitivity loss.

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          Most cited references 15

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            Age-related changes in the central visual field for short-wavelength-sensitive pathways.

            The sensitivity of short-wavelength-sensitive (SWS) cone pathways throughout the central 30-deg visual field was determined in both eyes of 62 normal volunteers between the ages of 20 and 72 years. We found an average SWS cone pathway sensitivity decrease with age of approximately 0.15 log unit per decade. The sensitivity reduction was approximately linear, with a slightly larger decrease beyond the age of 50 years. The age-related SWS cone pathway sensitivity reductions also became larger as a function of increasing stimulus eccentricity. Measurements of ocular-media absorption characteristics in each eye revealed that 30-40% of the age-related sensitivity loss could be attributed to reductions in transmission of short-wavelength light by the ocular media. After corrections for preretinal media transmission loss, the decrease in the sensitivity of SWS cone pathways with age was approximately 0.09 log unit per decade. This age-related loss is greater than age-related sensitivity decreases in the middle-wavelength-sensitive and/or long-wavelength-sensitive cones (approximately 0.06 to 0.07 log unit per decade). In the age group older than 60 years, there was an inverse relationship between media-corrected SWS cone pathway sensitivity and media absorption characteristics (i.e., media-corrected SWS cone pathway sensitivity was higher in eyes with lower media transmission of short wavelengths). This relationship was not so evident for younger subjects. A similar inverse relationship between transmission loss in the ocular media and SWS cone pathway sensitivity was found between left and right eyes of the same individual.(ABSTRACT TRUNCATED AT 250 WORDS)
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              Blue-on-Yellow Perimetry to Evaluate S Cone Sensitivity in Diabetics

              Blue-on-yellow (B/Y) perimetry was performed on 31 patients with non-insulin-dependent diabetes mellitus to study the loss of sensitivity to short wavelengths. Of these patients, 21 were without retinopathy (NDR) and 10 had early background retinopathy (SDR). Eleven normal subjects served as controls. The results were compared to white-on-white (W/W) perimetry. Foveal sensitivity determined by B/Y and W/W perimetry showed no significant difference between NDR, SDR and normals. However, the mean sensitivity in the central 30-degree area and that in the upper half of the central 20- to 30-degree concentric circular field were significantly decreased in B/Y perimetry in SDR patients (p < 0.05, p < 0.01, respectively). No significant sensitivity loss was detected in the W/W test. We conclude that there is a blue cone system sensitivity loss in the central 30-degree area, particularly in the upper half of the visual field and the paracentral area in diabetic patients with early background retinopathy.

                Author and article information

                S. Karger AG
                August 2005
                09 July 2008
                : 219
                : 4
                : 202-205
                Department of Ophthalmology, Ege University School of Medicine, Bornova, Izmir, Turkey
                85728 Ophthalmologica 2005;219:202–205
                © 2005 S. Karger AG, Basel

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                Tables: 2, References: 29, Pages: 4
                Original Paper


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