Comparison of ganglion cell layer thickness and pattern electroretinography among glaucoma suspects and healthy controls.

Purpose: To evaluate the difference in ganglion cell layer (GCL) thickness on optical coherence tomography (OCT) and waveform on pattern electroretinography (PERG) among glaucoma suspects and healthy controls.

Methods: An analytical, cross-sectional study was done on 100 eyes of 50 subjects, equally divided in the glaucoma suspect and control group. Subjects with an asymmetrically increased vertical cup-to-disc ratio and without any perimetric change were taken as suspects, and subjects with normal findings were taken as controls.