Calculation of Toric Intraocular Lens Power with the Barrett Calculator and Data from Three Keratometers

Table 1

Patient demographics.

Characteristic	Patients (n = 101)
Eyes (% right eyes)	55 (54.5%)
Age, y (mean ± SD)	66 ± 10
Sex (% male)	56 (55.4%)
Axial length, mm (mean ± SD)	23.37 ± 0.91
Anterior chamber depth, mm (mean ± SD)	3.10 ± 0.37
With-the-rule astigmatism (% eyes)	29 (28.7%)
Against-the-rule astigmatism (% eyes)	65 (64.4%)
Oblique astigmatism (% eyes)	7 (6.9%)

SD: standard deviation; corneal astigmatism measured with IOLMaster 500.