Size of glaucomatous optic discs.

In normal eyes, the optic disc size shows a high interindividual variability. In the diseased eye, some optic nerve anomalies and diseases occur preferentially in small optic discs, and some are more common in large optic nerve heads. We conducted a study to determine whether glaucoma subtypes are correlated with the optic disc size or not. Stereo optic disc photographs of 997 eyes with primary open-angle glaucoma, 44 eyes with normal-tension...