Research Article
Logistic Regression Model Using Scheimpflug-Placido Cornea Topographer Parameters to Diagnose Keratoconus
Table 1
The mean values of summary indices, keratoconus indices, specially calculated indices, keratometry readings, and keratoconus indices in keratoconus and normal groups.
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Mann–Whitney U test. SD = standard deviation; TCT = minimum corneal thickness; TCT r = distance of the thinnest point to the center of the cornea; CCT = central corneal thickness; Kmax = keratometry of the steepest point recorded from anterior tangential map; Apex r = distance of Kmax to the center of the cornea; CV = corneal volume in 10 mm central corneal zone; AD = distance from the corneal endothelium to the anterior surface of the lens; Sim-K1 = simulated flat keratometry; Sim-K2 = simulated steep keratometry; K1 = flat keratometry; K2 = steep keratometry; Ø = central corneal zone; SIf = symmetry index front; KVf = keratoconus vertex front index; BCVf = Baiocchi Calossi Versaci front index; SIb = symmetry index back; KVb = keratoconus vertex back index; BCVb = Baiocchi Calossi Versaci back index. |