Table 4.

Mean Group Baseline Rod Intercept Times and Slope Rod Intercept Times on the Standard 5° Dark Adaptation Protocol for Patients Who Develop Subretinal Drusenoid Deposit by 4 Years

Baseline AMD Group	No. of Eyes that Developed SDD by 4 Years	N (Never RPD)	Mean Baseline RIT (New SDD)	Mean Baseline RIT (Never SDD)	Slope RIT (New SDD)	Slope RIT (Never SDD)
Group 0	1	33	27.60	11.92	3.52	0.58
Group 1	0	9	-	14.58	-	0.72
Group 2	2	14	30.60	16.78	3.30	0.77
Group 3	2	3	27.60	20.9	2.18	2.28
Total New	5	59	28.80	13.94	2.89	0.75
			P = 0.0001		P < 0.0001

AMD = age-related macular degeneration; RIT = rod intercept time; RPD = reticular pseudodrusen; SDD = subretinal drusenoid deposit.