Table 3.

Global number, crude prevalence, and age-adjusted prevalence of vision impairment in 2020

	Blindness			Moderate and severe vision impairment			Mild vision impairment
	Number, millions	Crude prevalence	Age-standardised prevalence	Number, millions	Crude prevalence	Age-standardised prevalence	Number, millions	Crude prevalence	Age-standardised prevalence
All
All ages	43·28 (37·57–48·36)	0·55% (0·48–0·61)	0·52% (0·46–0·59)	295·09 (267·32–324·60)	3·74% (3·39–4·12)	3·58% (3·24–3·92)	257·83 (232·66–285·34)	3·27% (2·95–3·62)	3·20% (2·89–3·54)
≥50 years	33·61 (28·58–38·54)	1·77% (1·51–2·03)	1·85% (1·57–2·11)	206·42 (182·37–233·16)	10·87% (9·61–12·28)	11·18% (9·90–12·61)	142·88 (122·12–163·00)	7·53% (6·43–8·59)	7·73% (6·62–8·82)
Men
All ages	19·40 (16·95–21·70)	0·49% (0·43–0·55)	0·50% (0·44–0·56)	132·12 (119·77–145·68)	3·34% (3·03–3·68)	3·37% (3·05–3·70)	115·54 (104·37–127·95)	2·92% (2·64–3·23)	2·97% (2·68–3·28)
≥50 years	14·56 (12·38–16·73)	1·61% (1·37–1·85)	1·76% (1·49–2·01)	89·44 (78·70–101·43)	9·87% (8·68–11·19)	10·49% (9·30–11·83)	60·56 (51·60–69·25)	6·68% (5·69–7·64)	7·11% (6·07–8·11)
Women
All ages	23·88 (20·83–26·82)	0·61% (0·53–0·68)	0·54% (0·47–0·61)	162·97 (147·43–179·21)	4·15% (3·75–4·56)	3·77% (3·42–4·13)	142·29 (128·45–157·36)	3·62% (3·27–4·00)	3·42% (3·10–3·78)
≥50 years	19·05 (16·22–21·82)	1·92% (1·64–2·20)	1·92% (1·63–2·20)	116·98 (103·72–131·93)	11·79% (10·46–13·30)	11·78% (10·44–13·30)	82·32 (70·52–93·83)	8·30% (7·11–9·46)	8·29% (7·10–9·45)

Data are n (95% uncertainty interval) or % (95% uncertainty interval). Data taken from VLEG–GBD, 2020.¹