Keratorefractive Lenticule Extraction: Early Postoperative Day 1 Outcomes in 1350 Consecutive Procedures
Kishore Raj Pradhan1, Samuel Arba Mosquera2
1Matrika Eye Center, Kathmandu, Nepal ; and.
Purpose:
To evaluate postoperative visual outcomes on postoperative day 1 (POD1) after lenticule extraction in myopia astigmatism in a large cohort of over 1350 consecutive treatments.
Methods:
A retrospective review chart identified 1357 eyes consecutively treated with SCHWIND ATOS using lenticule extraction for myopic astigmatism who had at least 6 months of follow-up completed and for which POD1 was completely recorded. The standard visual and refractive outcomes, and astigmatism outcomes, were analyzed on POD1. As a sanity check, the stability of defocus and uncorrected distance visual acuity (UDVA) were evaluated from day 1 to 1-year postoperative follow-ups.
Results:
On POD1, 82% of the eyes achieved an UDVA of 20/20 or better, with 82% of the eyes with postoperative UDVA being the same or better than the preoperative corrected distance visual acuity baseline, and only 2% of eyes lost 2 lines of corrected distance visual acuity. Postoperative spherical equivalent (+0.15 ± 0.35D) was within 0.75 D in 98% of the cases, with excellent stability from 1-week to 1-year postoperative follow-ups (11% eyes changing by 0.5D of defocus). Postoperative refractive astigmatism at POD1 (0.01 ± 0.08 D) was highly accurate, with over 99% of the cases within 0.5 D, and 99% within 5 degrees of the attempted axis. The astigmatic correction index (1.00 ± 0.08) showed 98% of the cases within 10% deviation.
Conclusions:
In this large cohort of over 1350 cases, lenticule extraction using SCHWIND ATOS is safe and effective on POD1, shows stability from 1-week to 1-year postoperative follow-ups, and suggests accurate and precise corrections for both defocus and astigmatism.
