Table 1.

Preoperative patients’ data

Parameter	Mean ± SD	Range
Age (year)	71.8 ± 9.9	33–92
Sex (male: female)	25: 25
Right: Left	33: 31
Keratometric astigmatism (D)	0.76 ± 0.46	0.03–2.76
Type of keratometric astigmatism (eyes)
ATR (0–29°, 150–180°)	23
WTR (60–119°)	19
oblique (30–59°, 120–149°)	22
Axial length (mm)	23.67 ± 1.69	20.98–27.55

SD standard deviation, D diopter, ATR against-the-rule, WTR with-the-rule