Ray Tracing LASIK is a newer form of LASIK eye surgery that uses detailed optical measurements and artificial intelligence to create an individualized vision-correction plan for each eye. Rather than relying on a limited set of measurements, the technology builds a three-dimensional optical model that accounts for how light travels through multiple structures within your eye.
Canada’s first Ray Tracing LASIK surgery was performed at Bochner Eye Institute on October 30, 2025. Dr. Raymond Stein, Bochner’s Medical Director, is a board-certified ophthalmologist and Professor of Ophthalmology and Vision Sciences at the University of Toronto. A pioneer in refractive and implant surgery with more than 200,000 eye surgeries performed, Dr. Stein sees patients at Bochner’s Toronto, Scarborough, Unionville, and Oakville, ON, locations.
How Does Ray Tracing LASIK Work?
LASIK reshapes corneal tissue so light enters the eye differently and forms a clearer image. Ray Tracing LASIK adds another layer of individualized planning before the laser correction begins.
The system brings together several types of diagnostic information, including:
- Corneal tomography: Maps the front and back surfaces of your cornea.
- Wavefront imaging: Measures optical imperfections within the eye.
- Axial length measurements: Records the dimensions of the eye.
Artificial intelligence analyzes this information and creates a virtual optical model. Your surgeon can then use that model to plan the corneal reshaping based on the unique optics of each eye.
What Makes Ray Tracing Different From Earlier LASIK Technology?
Earlier forms of customized LASIK commonly use wavefront or corneal topography measurements. Ray tracing goes further by modelling how thousands of individual light rays travel through the eye.
That added information can account for lower-order refractive errors, such as nearsightedness and astigmatism, as well as subtler higher-order aberrations that affect visual quality.
Clinical studies have found that 70% to 80% of people undergoing Ray Tracing LASIK reached 20/15 vision or better. Individual outcomes still vary, and no laser vision correction method can promise a particular result.
Are You a Candidate for Ray Tracing LASIK?
Advanced technology doesn’t mean LASIK is right for everyone. You’ll still need a detailed eye examination before surgery. Your evaluation includes checking your prescription, corneal shape and thickness, and the health of the inside of your eyes.
These measurements help determine both your LASIK candidacy and which form of laser vision correction makes the most sense for your eyes.
Learn Whether Ray Tracing LASIK Fits Your Vision Goals
Ray Tracing LASIK gives surgeons more optical information to work with when planning laser vision correction. To learn whether it could be appropriate for your eyes, contact us about an evaluation at Bochner Eye Institute. Bochner has locations in Toronto, Scarborough, Unionville, and Oakville, ON, and its main office can be reached at 416-960-2020.