Clinical outcomes of Ankoris toric intraocular lens implantation using a computer-assisted marker system

Purpose To report the clinical outcomes of patients who underwent cataract surgery with implantation of Ankoris monofocal toric intraocular lens (IOL) (PhysIOL SA, Liege, Belgium) using the Zeiss Callisto Eye (Carl Zeiss AG, Dublin, CA). Methods We conducted a retrospective case series of patients who underwent routine cataract extraction and implantation of Ankoris toric IOL using the Zeiss Callisto eye between January 2018 and December 2018 by four senior surgeons. Patients' medical records were reviewed, and clinical outcomes including postoperative refraction, visual acuity outcomes, IOL position and deviation from planned axis were collected. Results Fifty-six eyes of 56 patients were included, 48% were female, and the mean age was 70 +/- 8 years. Patients with pseudoexfoliation syndrome, glaucoma or keratoconus were excluded from the study. Pre-operative mean corneal astigmatism was 2.38 +/- 0.78 diopters (D), and mean implanted IOL cylindrical power was 3.06 +/- 1.07 D. IOL rotation 30 days postoperatively was within 5 degrees in 82% of eyes and between 6 degrees and 10 degrees in 10.8% of eyes. Mean postoperative refractive astigmatism 30 days postoperatively was 0.22 +/- 0.36 D; in 84% of eyes the postoperative refractive astigmatism was <= 0.50 D. IOL rotation significantly increased between day 1 to day 7 postoperatively (1.91 +/- 3.15 degrees to 3.18 +/- 3.3 degrees,P = 0.001). However, no significant rotation had occurred between day 7 and day 30 postoperatively (P = 0.093). Conclusion Cataract surgery with implantation of Ankoris monofocal toric IOL using the Zeiss Callisto Eye marking system is predictable and effective in reducing refractive astigmatism.