Table 1.

The demographics data, mean keratometry, and corneal astigmatism in all study groups.

	Round	Oval	Symmetric bow tie	Asymmetric bow tie	Irregular
Subject/Eyes	17/33	21/33	21/33	18/33	19/33
Age (mean ± SD)	26.76 ± 3.26	26.39 ± 1.48	26.88 ± 1.92	27.85 ± 2.22	27.69 ± 2.81
Sex (male/female)	7/11	9/12	9/12	4/14	9/10
Mean k	44.33 ± 1.56	43.89 ± 0.97	43.25 ± 1.22	43.93 ± 1.30	43.77 ± 0.94
Corneal astigmatism	0.573 ± 0.26	0.973 ± 0.382	2.58 ± 0.82	1.69 ± 0.75	0.594 ± 0.49