Table 4. Age and Sex Adjusted Prevalence of Blindness, SVI, and MVI in each region of Thailand.

Presenting Visual Acuity	North	Northeast	Central	South	Bangkok	Thailand
	Prevalence (95% CI)	Prevalence (95% CI)	Prevalence (95% CI)	Prevalence (95% CI)	Prevalence (95% CI)	Prevalence (95% CI)
Blindness	0.7% (0.4–0.9)	0.7% (0.5–1.0)	0.6% (0.3–1.0)	0.6% (0.3–0.9)	0.3% (0.1–0.6)	0.6% (0.5–0.8)
Severe Visual Impairment	1.5% (0.8–2.2)	1.8% (1.3–2.3)	1.1% (0.7–1.5)	0.9% (0.4–1.5)	0.6% (0.0–1.3)	1.3% (1.0–1.6)
Moderate Visual Impairment	11.0% (7.0–15.4)	14.6% (10.7–18.6)	11.1% (8.4–13.9)	11.2% (7.0–15.4)	15.7% (8.6–22.9)	12.6% (10.8–14.5)