Table 1.

VIP participants by visual impairment onset/category, gender, and age

Participants	ID1	ID2	ID3	ID4	ID5	ID6	ID7	ID8	ID9	ID10	ID11
Onset	C	C	L	L	C	C	C	L	L	L	C
Category	B1	B2	B1	B2	B1	B2	B1	B2	B2	B2	B1
Gender	F	F	F	M	M	M	M	M	M	M	M
Age	21	21	23	47	36	23	38	44	35	29	44

Onset refers to onset of impairment (C = congenital; L = late). Category refers to the category of visual impairment (B1 = no light perception; B2 = ability to recognize the shape of a hand [USAB])