Table 1.

Clinical characteristics for the early-blind subjects

Subject	Age (years)	Onset	Sex	Visual acuity	Cause of blindness
B01	32	Birth	F	Light perception	Retinopathy of prematurity
B02	25	Birth	M	No light perception	Optic atrophy
B03	28	Birth	F	Light perception	Optic atrophy
B04	22	Birth	F	No light perception	Retinopathy of prematurity
B05	27	Birth	M	Light perception	Microphthalmos
B06	39	Birth	M	Light perception	Optic atrophy
B07	32	Birth	M	No light perception	Persistent hyperplastic primary vitreous
B08	22	Birth	F	No light perception	Retinopathy of prematurity
B09	28	Birth	M	No light perception	Retinopathy of prematurity
B10	39	Birth	F	No light perception	Cataract
B11	34	Birth	F	Light perception	Retinoblastoma
B12	28	Birth	M	No light perception	Retinopathy of prematurity
B13	29	Birth	F	No light perception	Retinopathy of prematurity
B14	26	Birth	M	No light perception	Corneal opacity
B15	30	Birth	F	No light perception	Retinopathy of prematurity
B16	34	Birth	M	Light perception	Retinopathy of prematurity
B17	35	Birth	M	Light perception	Cause unknown
B18	31	Birth	M	Light perception	Cause unknown
B19	36	Birth	F	Light perception	Retinopathy of prematurity
B20	34	Birth	M	NO light perception	Meningitis
B21	37	Birth	F	NO light perception	Optic atrophy
B22	25	Birth	M	NO light perception	Cause unknown
B23	27	Birth	M	NO light perception	Retinopathy of prematurity
B24	32	Birth	M	Light perception	Cause unknown
B25	26	Birth	M	Light perception	Xanthochromism