Table 1.

Description of the congenitally blind, late blind, and sighted participants

ID	Sex	Congenitally blind			Late blind					Sighted Age (years)
		Age (years)	Onset	Cause of blindness	Age (years)	Onset age (years)	Cause of blindness	Glass eye(s)	Glass eyes since age of (years)
1	F	28	Birth	Retinal detachment and cataract	26	21	Retinitis pigmentosa	R	24	26
2	F	32	Birth	Retinopathy of prematurity	32	20	Morbus Behçet			29
3	M	35	Birth	Inherited retinal dysplasia	40	14	Retinal detachment and glaucoma	L	31	37
4	M	23	Birth	Retinitis pigmentosa	23	13	Retinitis pigmentosa			20
5	F	42	Birth	Birth injury	48	28	Macular degeneration			40
6	M	30	Birth	Leber's congenital amaurosis	35	17	Glaucoma	L	27	28
7	F	18	Birth	Retinitis pigmentosa	23	15	Cataract	L	11	20
8	M	26	Birth	Retinitis pigmentosa	24	18	Macular degeneration			23
9	F	31	Birth	Retinopathy of prematurity	26	6	Haematom excision at optic nerve			27
10	M	34	Birth	Recessively inherited disease	36	24	Retinitis pigmentosa and macular degeneration			33
11	F	31	Birth	Optic nerve atrophy	29	4	Retinoblastoma	R, L	5	27
12	M	29	Birth	DDT during pregnancy	26	7	Inherited disease			25

The side of glass eye(s) in the late blind is indicated with R for right and with L for left.