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

Table 2

Nomogram for physician adjustment based on preoperative cylinder values obtained with the aberrometer. D: diopters.

Preoperative cylinder on aberrometry (D); (range)	Physician adjustment for sphere (D)
0 to 0.25	−0.25
0.26 to 0.75	−0.13
0.76 to 1.00	0.00
1.01 to 2.00	0.20
2.01 to 3.00	0.40
3.01 to 4.00	0.60
4.01 to 5.00	0.80
5.01 to 6.00	1.00
6.01 to 7.00	1.20
7.01 to 8.00	1.40