Table 1.

Summary of Time Course of Disease

Age at Baseline Visit		Age at Diagnosis or Symptom Onset*		Duration of Disease
Median 26, Range 12–58		Median 16, Range 6–41		Median 8 y, Range 1–25
Age range (y)	# pts	Age range (y)	# pts	Range (y)	# pts
10–19	10	5–9	6	1–5	9
20–29	4	10–19	9	6–10	7
30–39	8	20–29	7	11–15	6
40–49	2	30–39	1	16–20	2
50–59	1	40–49	2	21–25	1

^*The earlier date (diagnosis or symptom onset) was used, except when the diagnosis was made of genotypic Stargardt disease in an asymptomatic sibling of a diagnosed patient. In this case, the age of symptom onset was used for the sibling.