Table 5. The percentage of hexagonal cells of the corneas in various ages of each experimental group.

Groups	1 m (%)	6 m (%)	12 m (%)
R1	84.11±11.17 (n=15)	75.33±8.40 (n=15, p=0.062 versus 1 m)	61.11±7.93 (n=15, *p=0.003 versus 6 m)
P8	86.78±8.27 (n=15)	65±10.10 (n=15, *p=0.000 versus 1 m)	51.67±11.86 (n=15, *p=0.006 versus 6 m)
p value (R1 versus P8)	p=0.564	*p=0.029	*p=0.045

In the headings, m is the age in months. In the body of the table, n is the number of fields examined from the three individual specimens of each experimental group. The percentage of hexagonal cells increased significantly in the 12-month-old specimen of the R1 strain group while the percentage increased significantly in both the 6-month- to 12-month-old specimens of the P8 strain group. When comparing the two strain groups, the percentage of hexagonal cells are significantly higher in 6-month- and 12-month-old specimens of the P8 strain than in the specimens of the R1 strain group of the same ages.