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. 2020 Feb 17;2020:4130643. doi: 10.1155/2020/4130643

Table 2.

Linear regression analysis for eyes with apical scarring vs. eyes with Fleischer rings but no scarring (n = 25 vs. 36).

Parameter Coefficient p value 95% confidence interval
Front K1 (D) 12.9 <0.001 8.396–17.42
Front K2 (D) 12.9 <0.001 7.237–18.59
Front Km (D) 13.8 <0.001 9.105–18.6
Front astigmatism (D) 2.0 0.009 0.535–3.519
Back K1 (D) −1.7 0.002 −2.664–−0.657
BACK K2 (D) −2.9 <0.001 −4.217–−1.544
Back Km (D) −2.1 <0.001 −3.012–−1.285
Back astigmatism (D) 0.4 0.179 −0.171–−0.898
Thinnest pachymetry (μm) −75.1 <0.001 −113.82–−36.44

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