Related Experiment Video
Updated: Oct 3, 2025
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Clinical and refractive outcomes after topography-guided refractive surgery planned using Phorcides surgery planning
R Doyle Stulting1, Mark Lobanoff, Paul M Mann
1From the Woolfson Eye Institute, Atlanta, Georgia (Stulting); OVO LASIK + Lens, St. Louis Park, Minnesota (Lobanoff); Mann Eye Institute and Laser Centers, Houston, Texas (Mann); Washington University LASIK and Refractive Surgery Center, St. Louis, Missouri (Wexler); Laser Defined Vision, Greensboro, North Carolina (Stonecipher); Science in Vision, Bend, Oregon (Potvin).
Purpose:
To evaluate prospectively the clinical outcomes of topography-guided laser in situ keratomileusis (LASIK) surgery performed with Contoura Vision using the Wavelight excimer laser and planned with the Phorcides Analytical Engine.
Setting:
Four clinical practices in the U.S.
Design:
Prospective single-arm interventional study.
Methods:
130 eyes of 65 patients with myopia or myopic astigmatism were enrolled in a prospective study of visual and refractive outcomes after treatment with Contoura Vision using the Wavelight EX500 excimer laser to achieve optimal distance vision. At 3 months postoperatively, uncorrected distance visual acuity (UDVA), manifest refraction, and corrected distance visual acuity (CDVA) were measured and compared with previously published studies.
Results:
At 3 months postoperatively, 100%, 89%, and 28% of eyes achieved UDVA of 20/20, 20/15, and 20/12.5 or better, respectively. 92% of eyes had postoperative UDVA equal to or better than their preoperative CDVA. Postoperative CDVA was equal to, 1 line better, or 2 lines better than the preoperative CDVA in 53%, 40%, and 6% of eyes, respectively. Only 1 eye lost 1 line of CDVA, and no eyes lost more than 1 line of CDVA. A statistically significant decrease was noted in subjective visual complaints, including glare, halos, difficulty driving at night, reading difficulty, starbursts, fluctuation in vision, and light sensitivity.
Conclusions:
The Phorcides Analytical Engine can be used to optimize visual outcomes for the correction of myopia and myopic astigmatism.
