Table 1.

Blind participants' group belonging, age, sex, and self-reported onset age of blindness, cause of blindness, and current visual acuity.

No.	Group	Age (years)	Sex	Self-reported onset age blindness	Self-reported cause of blindness	Self-reported visual acuity
1	Early	65	M	Congenital	Leber's congenital amaurosis	Totally blind
2	Early	57	F	1 year	Retinoblastom	Totally blind
3	Early	53	F	2 years	Retinoblastom	Totally blind
4	Early	52	F	Congenital	Incontinentia pigmenti	Totally blind
5	Early	65	M	2 weeks	Retrolental fibroplasia	Totally blind
6	Early	63	M	Birth	Retrolental fibroplasia	Totally blind
7	Early	58	M	3 months*	Fetal infection (undiagnosed)	<0.05
8	Early	63	F	Congenital	Heredo-retinopathia congenitalis	<0.05
9	Early	63	F	Birth	Retrolental fibroplasia	<0.05
10	Early	64	F	Congenital*	Glaucoma	<0.05
11	Early	43	F	Congenital*	Axenfeld-Rieger syndrome	<0.05
12	Early	45	F	Birth	Retrolental fibroplasia	<0.05
13	Early	26	F	Congenital	Leber's congenital amaurosis	<0.05
14	Early	43	M	Congenital	Retinal degeneration	<0.05
15	Early	28	F	Congenital	Leber's congenital amaurosis	<0.05
16	Late	48	M	40 years	Retinis pigmentosa	<0.05
17	Late	56	F	46 years	Retinis pigmentosa	Totally blind
18	Late	56	F	20 years	Glaucoma	Totally blind
19	Late	73	F	62 years	Undetermined	<0.05
20	Late	67	M	57 years	Retinis pigmentosa	<0.05
21	Late	61	F	58 years	Keratitis	Totally blind
22	Late	58	F	38 years	Retinis pigmentosa	Totally blind
23	Late	70	F	69 years	Diabetic retinopathy	<0.05
24	Late	53	F	51 years	Cataract, impaired cornea	<0.05
25	Late	45	F	29 years	Tumors pressing on the optic nerve	Totally blind
26	Late	45	F	20 years	Stargardt's disease	<0.05
27	Late	56	M	15 years	Retinal detachment	Totally blind
28	Late	44	F	39 years	Tumors pressing on the optic nerve	<0.05
29	Late	73	F	50 years	Macular degeneration	<0.05
30	Late	72	F	28 years	Optic nerve inflammation	<0.05

^*Specific participants reported they were born with visual acuity of < 0.1 (legally blind).