Complications

Urban

Rural

p-value

p-value

All children

Sensitized children

All children

Sensitized Children

n = 1460 (U)

n = 490 (U1)

n = 640 (R)

n = 207 (R1)

U vs R

U1 vs R1

n (%)

n (%)

n (%)

n (%)

Superficial punctate keratitis

387 (26.5)

179 (36.5)

116 (18.1)

95 (45.8)

0.00001

0.001

Corneal erosion

50 (3.4)

34 (6.9)

15 (2.3)

23 (11.1)

0.00001

0.0001

Shield ulcer

34 (2.3)

18 (3.6)

13 (2)

11 (5.3)

0.0002

0.00001

Corneal plaque

30 (2)

14 (2.8)

12 (1.8)

7 (3.3)

0.0001

0.00001

No complications

959 (65.6)

245 (50)

484 (75.6)

71 (34.2)

0.01

0.0001