Distribution of predicted proportions of vision status by age group and gender in persons with trichiasis in Mankien district (n = 319).

*Children aged 0–4 years assumed to have normal vision.
**Vision status: Normal vision = presenting visual acuity of ≥6/18 in the better eye; Low vision = presenting visual acuity of <6/18 to ≤3/60 in the better eye; Blindness = presenting visual acuity of <3/60 in the better eye.