Categories
of visual impairment
| Category |
Corrected
VA-better eye |
WHO
Definition |
Indian
Definition |
| |
|
Standard
*
|
Working
#
|
|
|
0
|
6/6-6/18
|
Normal
|
Normal
|
Normal
|
|
1
|
<6/18-6/60
|
Visual
Impairment
|
Low
Vision
|
Low
Vision
|
|
2
|
<6/60-3/60
|
Severe
Visual Impairment
|
Low
Vision
|
Blind
|
|
3
|
<3/60-1/60
|
Blind
|
Low
Vision
|
Blind
|
|
4
|
<1/60-PL
|
Blind
|
Low
Vision
|
Blind
|
|
5
|
NPL
|
Blind
|
Total
Blindness
|
Total
Blindness
|
The standard
WHO definition is used in medical reports and publications
and is solely on visual acuity and does not take
into account functional vision.
# The WHO
working definition has been adopted since WHO Consultation
in 1991. This working definition is solely used for
reporting purposes and should not be used for eligibility
of services.
Source: Visual Impairment Handbook by Bhushan
Punani, Nandini Rawal
(Blind People's Association (India), Vastrapur, Ahmedabad - 380 015)
|
