Wavefront-Guided Photorefractive Keratectomy with the Use of a New Hartmann-Shack Aberrometer in Patients with Myopia and Compound Myopic Astigmatism

Table 5

Vector analysis of refractive astigmatism (follow-up: 3 months, ).

Vector parameter	Mean ± SD; (range)
Intended refractive correction [D]	0.86 ± 0.83; (0 to 5.25)
Surgically induced refractive correction [D]	0.92 ± 0.76; (0 to 5.71)
Error vector [D]	0.23 ± 0.29; (0 to 2.00)
Correction ratio	1.02 ± 0.43; (0 to 4.12)
Error of magnitude [D]	0.04 ± 0.27; (−1.25 to 1.25)
Error of angle [°]	0.00 ± 14.86; (−85.15 to 84.03)
Absolute error of angle [°]	4.97 ± 14.00; (0 to 84.03)
Axis shift [°]	0.13 ± 28.52; (−89.00 to 89.00)

SD: standard deviation; D: diopters.