Contoura with Phorcides versus WaveLight Wavefront-Optimized LASIK for myopia with astigmatism
Official title: Comparison of Visual Acuity and Quality of Life Following Contoura With Phorcides Compared to WaveLight Wavefront Optimized LASIK
Run by Vance Thompson Vision · NCT05486546 · Data updated 2026-11-12
This trial will test whether Contoura planned with Phorcides or WaveLight wavefront-optimized LASIK gives better vision and patient satisfaction for adults having LASIK for nearsightedness with astigmatism.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 21 Years to 38 Years |
| Sex | All |
| Enrollment | 120 (estimated) |
| Sponsor | Vance Thompson Vision Academic / other |
| Locations | 4 sites (Bozeman, Montana and 3 other locations) |
| Status | Recruiting |
| Started | August 15, 2022 |
| Main results expected | September 1, 2023 |
| Study ends | December 1, 2023 |
| Registry record updated | April 26, 2023 |
| Trial ID | NCT05486546 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults (≥21 years) with myopia and astigmatism under 3.0 D, stable refraction, preoperative pachymetry ≥490 µm with sufficient residual bed, and otherwise healthy eyes.
✕Probably not a fit
Patients under 21, those with other ocular disease limiting visual potential, high astigmatism (>3.0 D), thin corneas (<490 µm), or unstable refraction are unlikely to benefit or be eligible for this comparison.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults eligible for LASIK who meet corneal thickness and refractive criteria will undergo LASIK planned either with Contoura plus Phorcides planning software or with WaveLight wavefront-optimized planning. Each participant will receive one of the two planning approaches and be followed after surgery, including at least a 1-month postoperative visit. Measured outcomes include uncorrected and best-corrected visual acuity, refractive results, contrast sensitivity, and patient-reported satisfaction. Procedures are performed at Vance Thompson Vision sites in Bozeman, Omaha, and Fargo with enrollment limited to candidates meeting the listed inclusion and exclusion criteria.
Why it matters
Potential benefit: If successful, the results could help surgeons choose the planning method that yields better uncorrected vision and higher patient satisfaction after LASIK.
How similar studies have gone: Prior research has shown that topography-guided approaches like Contoura can improve visual quality over wavefront-optimized LASIK in some reports, and early data on Phorcides planning are promising but not yet definitive.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients at least age 21 years of age undergoing LASIK eye surgery * Willing and able to comprehend informed consent and complete 1 month post-op visit * Potential postoperative BCDVA of 20/20 or better in each eye based on Investigator's medical opinion * Candidates for Contoura with Phorcides (Myopic, astigmatism \<3.0D) * Both eyes targeted for plano * Pre-operative total corneal Pachymetry 490um or above * Stable refractive error \<0.50D change in preceding year * Good general and ocular health * Pre-operative exam completed within three months of surgery * SCL discontinued 3 days prior to pre-op exam and the procedure * Pachymetry above 490 with residual greater than 270um * Candidates who, as determined by the investigator, can safely undergo LASIK Exclusion Criteria: * Patients under 21 years of age * Concomitant ocular condition which would limit the BCVA at the discretion of the surgeon * Patients with usual relative and absolute contraindications for LASIK surgery (Patients with severe dry eye, recurrent corneal erosion, uncontrolled Glaucoma, collagen vascular disorders, keratoconus or signs of keratoconus, uncontrolled Diabetes, Herpes) * Pachymetry below 490 * Autoimmune or immunodeficiency diseases * Pregnant or nursing women * Patients with signs of inability to understand consent for study and procedure planned * Patients with history of previous ocular surgery * Patients with strabismus or amblyopia * Patients that have a BCDVA of 20/25 or worse in either eye
Where it's running
-
Vance Thompson Vison
Bozeman, Montana, United States Recruiting -
Vance Thompson Vision
Omaha, Nebraska, United States Recruiting -
Vance Thompson Vision
Fargo, North Dakota, United States Recruiting -
Vance Thompson Vision
Sioux Falls, South Dakota, United States Recruiting
Study contacts
- Study coordinator: Daniel Terveen, MD
- Email: daniel.terveen@vancethompsonvision.com
- Phone: 605-645-7999
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.