9D90.6
category
Blindness
Definition
The numerical definition used for WHO statistics refers to profound, near-total or total loss. The functional definition refers to individuals who have little or no residual vision and who have to rely predominantly on vision substitution skills, i.e. on using senses other than vision (Braille or talking books for reading, a long cane or guide dog for mobility, or touch for manipulation).
Inclusions
- visual impairment categories 4, 5, 6 in both eyes
- visual impairment categories 4, 5, 6 in one eye [normal vision in other eye]
- visual impairment categories 4, 5, 6 in one eye and categories 1, 2, 3 or 9 in the other eye
- visual impairment category 5
Also indexed as
BlindnessNLP - [no light perception]Profound vision disabilityTotal vision impairmentacquired amaurosisacquired blindnessacquired blindness, one eyeamaurosisblind eyeblindness left eyeblindness of one eyeblindness right eyeblindness, both eyescongenital amaurosiscongenital blindnessno vision left eyeno vision right eyeone eye blindunilateral blindnessvisual impairment categories 4, 5, 6 in both eyesvisual impairment categories 4, 5, 6 in one eye [normal vision in other eye]visual impairment categories 4, 5, 6 in one eye and categories 1, 2, 3 or 9 in the other eyevisual impairment category 5“blindness” – WHO