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New software may detect corneas that are not eligible for refractive procedures
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PARIS — New software incorporating Placido topography and tomography parameters can help detect corneas with subclinical keratoconus that are not eligible for refractive surgery.
“Previous softwares used either Placido or elevation topography, but none of them incorporated both technologies in just one score. This new software allows us to divide corneas into ‘normal’ and ‘suspect,’ based on the ability of the system to recognize early forms of keratoconus,” Alain Saad, MD, said at the meeting of the French Society of Ophthalmology.
The new Orbscan software (Technolas Perfect Vision) was used in 347 eyes that had previously been classified as normal or suspect using subjective methods of evaluation based on corneal topography.
“Our software system scored them again, and we compared the two classifications,” Dr. Saad said. “There was 94% of concordance between the subjective evaluation and the artificial intelligence method. It’s quite a high percentage, but still there is a 6% margin of subjective error that should be considered.”
Further studies will be necessary to establish the validity of this objective method of corneal topography analysis in the selection of candidates for refractive surgery.
- Disclosure: Dr. Saad is a consultant for Technolas Perfect Vision.