Fig. 2
Corneal topographic data according to the site of chalazion. Chalazia are classified into control, upper, lower, or both eyelid group. Astigmatism by simulated keratometry (simK; (a), steep keratometry (K) by simK (b), total root mean square (RMS; c), second order aberration (d), oblique astigmatism (Z−2 2; e), and vertical astigmatism (Z2 2; f) are significantly different between the subgroups (p = 0.001, 0.022, 0.002, < 0.001, 0.009, and 0.001, respectively; one-way analysis of variance)