Contoura Vision is a topography guided LASIK technology used to correct refractive vision and thereby decreasing or eliminating dependency on glasses or contact lenses. The Contoura vision technology reduces symptoms that are linked with LASIK. It was FDA approved in the US in 2016. The Contoura vision method provides a measurement of 22,000 points as compared to 200 points provided by wave front-guided LASIK method. The imperfections in the cornea are recorded and is then corrected with the help of laser.
Contoura Vision has resulted in patients vision better than 6/6 in multiple patients who were a part of evaluation by US FDA trials in attempt to validate the technology. Contoura Vision is the only technology where consistent success beyond 20/20 vision has been achieved in the majority of patients. More than 40% of the patients that were evaluated were able to read one additional line on the visual acuity chart than that of a patient with 20/20 vision. Additionally, 13.5% could read two additional lines on the visual acuity chart. Fewer visual disturbances such as glare, halos, ghost images, difficulty in night time driving and reading were also reported by many patients. Contoura vision exhibited superior quality of vision.
Comparison with other LASER procedures
Contoura Vision was compared against Small Incision Lenticule Extraction to check the effectiveness by Kanellopoulos AJ and the results were published in Journal of Refractive Surgery in 2017. At 3 months, 86.4% of the Contoura Vision group and 68.2% of the SMILE group had UDVA of 20/20 and 59.1% and 31.8%, respectively, had UDVA of 20/16. Spherical equivalent refraction was 95.5% for the Contoura Vision group and 77.3% for the SMILE group. Residual refraction cylinder was 81.8% for the Contoura Vision group and 50% for the SMILE group. Contrast sensitivity was 7.2 ± 1.01 in the Contoura Vision group and 6.20 ± 1.52 in the SMILE group. Objective Scatter Index measurements at 3 months were 1.35 in the Contoura Vision group and 1.42 in the SMILE group. The author concluded that Contoura Vision was found to be superior compared to SMILE for all the visual performance parameters that were studied, irrespective the parameters were subjective and objective.
