Table 4.

Prevalence of symptomatic dry eye subgroups in each region of Thailand.

Region	Symptomatic dry eye, n (%)
	Normal, n=1334 (14.2)	Mild, n=2183 (23.3)	Moderate, n=2024 (21.6)	Severe, n=3824, (40.8)
Northern	82 (11.3)	162 (22.3)	159 (21.9)	324 (44.5)
Northeast	96 (10.3)	186 (19.9)	198 (21.2)	454 (48.6)
Central (except Bangkok)	272 (13.8)	484 (24.5)	426 (21.6)	793 (40.1)
Bangkok	683 (15.8)	1,030 (23.9)	938 (21.7)	1,665 (38.6)
Eastern	85 (12.9)	143 (21.8)	144 (22)	284 (43.3)
Western	33 (16.8)	47 (24)	37 (18.9)	79 (40.3)
Southern	83 (14.8)	131 (23.3)	122 (21.8)	225 (40.1)