Table 2.

Squamous metaplasia grades in the superior conjunctiva according to the groups.

Squamous metaplasia Upper quadrant	Group 1	Group 2	Group 3	Group 4	Group 5	Group 6	P
Before	0.06 ± 0.25	0.14 ± 0.36	0.42 ± 0.51	0.14 ± 0.36	0.07 ± 0.26	0.35 ± 0.49	χ²: 10.29 P = 0.067
3rd month	0.73 ± 0.45	0.42 ± 0.64	0.42 ± 0.51	0.14 ± 0.36	0.28 ± 0.46	0.64 ± 0.63	χ²: 12.40 P = 0.030
6th month	0.73 ± 0.45	0.85 ± 0.36	0.50 ± 0.51	0.07 ± 0.26	0.28 ± 0.46	0.35 ± 0.49	χ²: 23.91 P = 0.0001
12th month	0.73 ± 0.70	0.64 ± 0.49	0.42 ± 0.51	0.07 ± 0.26	0.14 ± 0.36	0.42 ± 0.51	χ²: 19.58 P = 0.001
P	0.0001	0.0001	0.392	0.194	0.061	0.019
Before 3rd month	0.002	0.046	1.00	1.00	0.083	0.46
Before 6th month	0.002	0.002	0.317	0.317	0.083	1.00
Before 12th month	0.004	0.008	0.157	0.157	0.317	0.317