Polar Value Analysis of Low to Moderate Astigmatism with Wavefront-Guided Sub-Bowman Keratomileusis

Figure 3

Target-induced astigmatism (TIA) versus surgically induced astigmatism in anterior corneal astigmatism (ACA) (a) and total ocular astigmatism (TOA) (b) at 6 months, expressed as AKP (the astigmatic polar value at the main meridian). Points below the solid black line indicate astigmatic undercorrection. Two dotted lines represent values within ±0.50 D. The solid grey line represents linear regression.

(a)

(b)