Structure–function relationship
VF, RA, retinal nerve fiber
RNFL was measured using Cirrus spectrum-domain OCT (Carl Zeiss Meditec, Inc, Dublin, CA) Optic Disc Cube 200 × 200 protocol scans. A 3.46 mm diameter circle was automatically placed around the optic disc, providing RNFL thickness globally and in superior, inferior, temporal, and nasal sectors. Coefficient of determination for VF and OCT parameters was calculated and compared using AIC. Age adjusted RA topographic map relating visual field test stimulus locations (left) to OCT-measured retinal nerve fiber layer thickness (right) is shown for a right eye.