Table 1.

Subject Demographics

	Normal	Intermediate AMD	P Value
Eyes, n	51	63
Age (y)
Mean	64.70	67.80	0.07a
Range	52 to 80	50 to 80
Sex (%)
Males	26	35	0.17a
Females	25	28
Eye (%)
Right	22	32	0.56a
Left	29	31
BCVA
Mean	6/6	6/6	0.32b
Range	6/15 to 6/3	6/12 to 6/4
Rx (D)
Mean	−0.36	0.31	0.19b
Range	−3.75 to +2.50	−3.25 to +4.00

BCVA, best corrected visual acuity; Rx (D), refractive error (diopters).

^aFisher exact test.

^bMann-Whitney t-test.