Angular distance between fovea, RNFL may affect glaucoma detection with GCA maps

Ganglion cell analysis maps were found to be a useful tool in detecting early glaucoma, but they lacked the ability to detect abnormal findings in glaucomatous eyes when angular distance between the fovea and retinal nerve fiber layer was substantial, according to a study. The study authors used Cirrus high-definition optical coherence tomography (Carl Zeiss Meditec) with macular ganglion cell analysis (GCA) maps to examine its effectiveness in identifying early glaucoma. The cross-sectional study included 131 eyes with early glaucoma and 132 healthy eyes.

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