Table 1.

World Health Organization criteria

Cataract surgical outcome according to postoperative visual acuity (7)
Outcome	LogMar Visual acuity	Snellen Visual acuity
Good	≤ 0, 5 LogMar	≥ 6/18
Moderate	> 0, 5 ≤ 1 LogMar	< 6/18 ≥ 6/60
Poor	> 1 LogMar	< 6/60
Definition of distance visual impairment and blindness (ICD 11)
Mild visual impairment		< 6/12
Moderate visual impairment		< 6/18
Severe visual impairment		< 6/60
Blindness		< 3/60