Table 1.

Visible retinal area obtained with phase-plate adjustment and without phase-plate adjustment

Visible retinal area (mm2)	On-axis	Nasal	Temporal	Inferior	Superior	Total
Phase-plate adjustment	673.3 ± 26.1	596.2 ± 24.8	590.6 ± 20.7	602.4 ± 24.8	607.8 ± 24.8	921.7 ± 24.7
Without phase-plate adjustment	683.4 ± 22.5	578.3 ± 20.9	551.3 ± 16.9	618.7 ± 18.6	552.3 ± 17.1	908.0 ± 21.5
Difference with phase-plate adjustment (%)	−1.9 ± 3.0	3.5 ± 3.1	6.7 ± 3.2	−0.8 ± 3.5	9.9 ± 2.7	1.8 ± 2.1
p-Value	0.43	0.32	0.07	0.64	0.002	0.47

Data presented as mean ± standard error. p-Value was determined using t-test.