Table 4.

Comparison of corneal elevation parameters between the normal and AC groups.

Parameter	Normal	AC	p
	Mean ± SD	Mean ± SD
Anterior corneal surface
TE (μm)	2.80 ± 1.24	4.07 ± 2.49	0.04*
CE (μm)	2.05 ± 0.94	3.33 ± 2.45	0.03*
ME (μm)	0.12 ± 0.31	0.18 ± 0.60	0.67
TED (μm)	3.40 ± 1.10	4.67 ± 2.22	0.02*
CED (μm)	3.50 ± 1.10	4.73 ± 2.23	0.03*
MED (μm)	2.60 ± 0.79	3.64 ± 1.69	0.01*
Posterior corneal surface
TE (μm)	5.00 ± 2.70	7.73 ± 3.23	<0.01*
CE (μm)	0.35 ± 2.06	1.90 ± 2.64	0.03*
ME (μm)	0.56 ± 0.64	0.48 ± 0.75	0.69
TED (μm)	3.90 ± 2.36	6.13 ± 2.91	0.01*
CED (μm)	4.00 ± 2.70	6.57 ± 3.08	<0.01*
MED (μm)	2.99 ± 2.01	4.95 ± 2.29	<0.01*

AC, allergic conjunctivitis; TE, elevation at the thinnest location; CE, elevation at the central location; ME, mean value of elevation in the central 4 mm zoom; ED, elevation difference; SD, standard deviation.

^*Statistically significant (p < 0.05).