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 1.000.00
1.01 to 2.000.20
2.01 to 3.000.40
3.01 to 4.000.60
4.01 to 5.000.80
5.01 to 6.001.00
6.01 to 7.001.20
7.01 to 8.001.40