Role of toric intraocular lenses in the correction of keratoconic eyes with cataract

The authors aimed to determine the most effective intraocular lens (IOL) corrections for moderate to severe keratoconus (KC) eyes with cataracts by using computer simulations to analyze image quality. They found that while IOLs alone provided modest improvements in visual quality, the combination of IOLs with toric rigid gas-permeable lenses significantly enhanced image quality. The study concluded that IOL corrections alone are inadequate for addressing the large corneal aberrations in KC, and the best results were achieved with a combination of spherical and toric IOLs to avoid overcorrection.