Table 3.

Linear Regression of Age on Corneal Epithelial Thickness (n = 124)

Zone	Reg. Equation	R Value	P * Value
Center	51.70 + 0.04 × age	0.197	0.028*
Superior
Paracentral	52.4 − 0.01 × age	0.037	0.683
Peripheral	52.5 − 0.05 × age	0.195	0.030*
Superior-Nasal
Paracentral	52.18 + 0.01 × age	0.023	0.801
Peripheral	52.82 − 0.03 × age	0.125	0.170
Nasal
Paracentral	51.9 + 0.02 × age	0.113	0.210
Peripheral	51.6 − 0.02 × age	0.096	0.287
Inferior-Nasal
Paracentral	52.2 + 0.02 × age	0.16	0.074
Peripheral	52.9 + 0.02 × age	0.09	0.330
Inferior
Paracentral	52.6 + 0.05 × age	0.19	0.035*
Peripheral	53.7 + 0.02 × age	0.073	0.420
Inferior-Temporal
Paracentral	52.3 + 0.04 × age	0.18	0.046*
Peripheral	52.8 + 0.03 × age	0.124	0.170
Temporal
Paracentral	52.14 + 0.02 × age	0.107	0.240
Peripheral	52.53 − 0.0 × age	0	0.998
Superior-Temporal
Paracentral	52.45 + 0.0 × age	0	0.999
Peripheral	53.06 − 0.04 × age	0.173	0.055

^*Indicates significance.