Ray-tracing-guided myopic LASIK: real-world clinical outcomes

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Myopia correction remains a significant area of research in ophthalmology.
• Laser in situ keratomileusis (LASIK) is a common refractive surgery procedure.
• Advancements in technology aim to improve LASIK outcomes and patient satisfaction.

Purpose of the Study:

• To evaluate the effectiveness of individualized ray-trace based LASIK for myopia correction in a clinical setting.
• To assess visual acuity and refractive outcomes following this advanced LASIK procedure.
• To analyze changes in higher-order aberrations (HOAs) after ray-trace based LASIK.

Main Methods:

• A retrospective chart review of 400 eyes with myopia (up to -8.25 D sphere, -4.25 D astigmatism) treated with ray-trace based LASIK.
• Utilized wavefront, tomography, and biometry data with the InnovEyes Sightmap device.
• An individualized 3D eye model and custom ablation profile were generated using the InnovEyes algorithm.

Main Results:

• All eyes achieved uncorrected distance visual acuity (UDVA) of 20/20 or better at 3 months.
• 51% of eyes achieved UDVA of 20/12.5 or better, and 8% achieved 20/10.
• A statistically insignificant increase in total HOAs was observed, with a decrease in spherical aberration.

Conclusions:

• Ray-trace based LASIK is a safe and effective treatment for myopia and astigmatism.
• The procedure yields high rates of excellent visual acuity.
• No clinically significant increase in whole eye HOAs was detected, indicating a favorable safety profile.