Table 1.

Percentage change in crude prevalence of moderate and severe vision impairment and blindness in adults aged 50 years and older between 2010 and 2019

	Moderate and severe vision impairment			Blindness
	Crude prevalence	Number of cases	Age-standardised prevalence	Crude prevalence	Number of cases	Age-standardised prevalence
All causes	1·9% (0·8 to 3·1)	32·0% (30·5 to 33·5)	0·7% (−0·5 to 1·8)	−10·0% (−11·2 to −9·1)	16·5% (15·0 to 17·8)	−11·4% (−12·3 to −10·6)
Avoidable* (cataract+ undercorrected refractive error)	1·6% (0·4 to 2·8)	31·5% (30·0 to 33·1)	0·5% (−0·8 to 1·6)	−14·4% (−15·9 to −13·2)	10·8% (8·9 to 12·4)	−15·4% (−16·8 to −14·3)
Cataract	2·9% (1·5 to 4·2)	33·2% (31·4 to 34·9)	1·1% (−0·3 to 2·3)	−14·0% (−15·5 to −12·7)	11·4% (9·5 to 13·1)	−15·1% (−16·4 to −13·9)
Undercorrected refractive error	0·4% (−1·1 to 1·9)	30·0% (28·1 to 31·9)	−0·1% (−1·5 to 1·3)	−17·5% (−19·2 to −15·7)	6·9% (4·6 to 9·1)	−17·8% (−19·5 to −16·3)
Glaucoma	10·7% (9·2 to 12·3)	43·4% (41·4 to 45·5)	8·0% (6·5 to 9·5)	−8·3% (−9·8 to −7·0)	18·7% (16·9 to 20·4)	−10·8% (−11·9 to −9·9)
Age-related macular degeneration	7·1% (5·2 to 9·0)	38·7% (36·2 to 41·2)	5·0% (3·2 to 6·7)	−9·1% (−11·4 to −7·0)	17·7% (14·8 to 20·4)	−11·7% (−13·8 to −9·8)
Diabetic retinopathy	0·8% (−0·9 to 2·6)	30·6% (28·3 to 32·8)	−0·4% (−2·1 to 1·2)	−6·0% (−8·4 to −3·5)	21·8% (18·7 to 25·0)	−6·6% (−9·0 to −4·1)
Residual causes of vision loss	1·8% (0·7 to 3·1)	31·9% (30·4 to 33·5)	0·0% (−0·9 to 1·1)	−2·4% (−4·1 to −0·8)	26·4% (24·2 to 28·5)	−3·7% (−5·2 to −2·3)

Data in parentheses are 95% uncertainty intervals. Data for all ages are given in the appendix (p 6). Data presented in this table were calculated to assess the success of the World Health Assembly's global action plan to reduce avoidable vision impairment.

^*Classified as “avoidable” in the global action plan.