Ray-Trace Based Lasik: Outcome Of 1500 Eyes
Published 2024 - 42nd Congress of the ESCRS
Reference: PP15.04 | Type: Free paper | DOI: 10.82333/e2hs-cn67
Authors: Anna Siu* 1 , Chandra Bala 1 , Akshaya Thananjeyan 2
1Ophthalmology,PersonalEYES,Sydney,Australia, 2Emergency Dept,St Vincent's Hospital,Sydney,Australia
Purpose
To assess effectiveness of individualized ray-trace based laser in situ keratomileusis (LASIK) for correction of myopia in everyday clinical practice.
Setting
Single-site private practice.
Methods
Consecutive, myopic eyes (range ≤-8.37 diopters [D] sphere; astigmatism 0 to -4.75 D) treated with ray-trace based LASIK were included. Patients underwent wavefront, tomography, and biometry assessment using the InnovEyes Sightmap diagnostic device. The ray-trace based algorithm (InnovEyes algorithm) then generated an individualized 3D eye model and calculated a customized LASIK ablation profile. Postoperative visual acuity and refractive error were evaluated 1 to 3months.
Results
The procedure was performed on 1500 eyes (750patients). Mean preoperative manifest refraction spherical equivalent was -3.39 ± 1.58 D. uncorrected distance visual acuity (UDVA) was ≥6/9.6 in all eyes, ≥6/3.8 in 35%, ≥6/4.8 in 76%, ≥6/6 in 95%, ≥6/7.5 in 99% and ≥6/9.6 in 100% of eyes. Enhancement surgery was undertaken in 7 eyes of 6 patients after 3 months. Four of the eyes requiring enhancement had significant over correction for treatment of >1.5D of cyl. The remaining eyes required hyperopic enhancement of myopic treatment over -4.5.
Conclusions
Ray-trace based LASIK was safe and effective for correction of myopia with and without astigmatism with a low LASIK enhancement rate.