The Correlation between Corneal Findings and Disease Severity in Keratoconus per Scheimpflug Corneal Tomography

Table 3

Tomographical characteristics of the studied eyes.

	Apical scarring		value	Fleischer rings		value	Vogt striae		value
	+n = 25	−n = 109		+n = 55	−n = 78		+n = 23	−n = 109
Front K1 (D)	59.9 ± 10.5	45.6 ± 5.1	<0.001	51.8 ± 9.9	45.9 ± 6.5	<0.001	51.5 ± 8.5	47.4 ± 7.8	0.024
Front K2 (D)	64.6 ± 12.9	49.1 ± 6.6	<0.001	56.2 ± 11.5	48.9 ± 7.8	<0.001	56.2 ± 10.3	50.7 ± 9.2	0.012
Front Km (D)	62.7 ± 11.1	47.1 ± 5.4	<0.001	53.9 ± 10.4	47.4 ± 7.0	<0.001	53.7 ± 9.2	49.0 ± 8.3	0.014
Front astigmatism (D)	5.8 ± 3.2	3.2 ± 2.5	<0.001	4.4 ± 2.5	3.0 ± 2.5	0.002	4.7 ± 3.0	3.3 ± 2.4	0.02
Back K1 (D)	−8.4 ± 2.34	−6.5 ± 0.9	<0.001	−7.3 ± 1.7	−6.6 ± 1.2	0.01	−7.7 ± 1.6	−6.7 ± 1.5	0.004
Back K2 (D)	−10.0 ± 2.2	−7.1 ± 1.9	<0.001	−8.2 ± 3.0	−7.2 ± 1.4	0.02	−7.8 ± 4.1	−7.5 ± 1.6	0.627
Back Km (D)	−9.2 ± 2.0	−6.9 ± 1.0	<0.001	−7.9 ± 1.7	−6.9 ± 1.3	<0.001	−8.1 ± 1.7	−7.1 ± 1.5	0.006
Back astigmatism (D)	1.2 ± 1.3	0.7 ± 0.5	<0.001	1.0 ± 0.9	0.6 ± 0.4	<0.001	0.9 ± 0.4	0.7 ± 0.6	0.266
Thinnest pachymetry (μm)	368.1 ± 65.1	469.2 ± 66.4	<0.001	417.2 ± 84.3	473.9 ± 62.2	<0.001	434.2 ± 66.8	455.2 ± 78.2	0.232

K1 = flat keratometry, K2 = steep keratometry, Km = mean keratometry, D = diopters.