Table 4.

Causes of vision impairment (≤6/12 in better eye)

Causes	Presenting VA n (%)	Uncorrected VA n (%)
Refractive error†	253 (92.7)	414 (95.4)
Amblyopia‡	6 (2.2)	6 (1.4)
Cataract	2 (0.7)	2 (0.5)
Retinal disorder	1 (0.4)	1 (0.2)
Other causes	4 (1.5)	4 (0.9)
Unexplained cause	7 (2.6)	7 (1.6)
Any cause	273 (100.0)	434 (100.0)

^†Assigned as the cause of reduced vision for all eyes correcting to better than 6/12 with subjective refraction, even if other contributing pathology was present. ^‡Amblyopia was cause of reduced vision because of anisometropia and bilateral ametropia. No child had strabismic amblyopia. VA, visual acuity.