Clinical Performance of Toris K Contact Lens in Patients with Moderate to Advanced Keratoconus: A Real Life Retrospective Analysis

Table 2

Demographic information of the population enrolled in the study.

Parameter	Values
Number of patients
Females	17 (42.5%)
Males	23 (57.5%)
Age
(mean ± sd)	27.3 ± 8.6
(min./max.)	18/54
Number of eyes
Bilateral	20 patients
Unilateral	20 patients
Refractive error (D)
Spherical
(mean ± sd)	−3.31 ± 3.62
(min./max.)	−15/2.75
Cylindrical
(mean ± sd)	−3.94 ± 1.72
(min./max.)	−8/0
Keratometry (D)
Flat
(mean ± sd)	47.45 ± 3.56
(min./max.)	42.72/60.27
Steep
(mean ± sd)	50.85 ± 3.89
(min./max.)	46.10/63.82
SimK
(mean ± sd)	49.10 ± 3.66
(min./max.)	45.02/61.72

D: diopter and sd: standard deviation.