9D90.6 Blindness

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2026-01

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

postcoordination

synonyms

• Blindness
• acquired amaurosis
• acquired blindness
• acquired blindness, one eye
• amaurosis
• blind eye
• blindness left eye
• blindness of one eye
• blindness right eye
• blindness, both eyes
• congenital amaurosis
• congenital blindness
• no vision left eye
• no vision right eye
• one eye blind
• unilateral blindness
• 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
• Profound vision disability
• “blindness” – WHO
• Total vision impairment
• NLP - [no light perception]

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