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PubMed2001

[Correlation between blue chromatic macular sensitivity and optic disc change in early glaucoma patients].

PURPOSE: To investigate the relationship between morphological changes of the optic nerve head (ONH) and macular sensitivity(MS) determined with blue-on-yellow(B on Y) and white on white (W on W) perimetry in normal subjects and patients with glaucoma. METHODS: One randomly chosen eye was evaluated in each of 28 normal subjects, 23 patients with ocular hypertension(OH), and 23 patients with early primary open-angle glaucoma(POAG). Mean values for MS by B on Y and W on W perimetry were obtained with the macular program using a modified Humphrey Field Analyzer(HFA). The Heidelberg Retina Tomograph(HRT) with software version 2.01 was used to evaluate the topographic parameters of temporal sector in ONH. RESULTS: There was no significant difference in temporal topographic parameters of ONH among the three clinical groups. Mean values for MS of B on Y and W on W perimetry in early POAG were significantly lower than in normal subjects and OH. Mean values for MS of W on W perimetry showed no significant correlation with ONH parameters of the temporal sector. In early POAG, mean values for MS of B on Y perimetry significantly correlated with cup area, cup/disc area ratio, cup volume, and rim volume in the temporal sector of ONH. CONCLUSION: The measurement of mean MS of B on Y might be able to detect the glaucomatous optic nerve damage due to increased intraocular pressure prior to the morphological changes of ONH in early stages of glaucoma.

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