Can a simple eyeglass test sharpen vision in keratoconus?

This study compares three different methods for prescribing eyeglasses in people with keratoconus, a condition that thins and bulges the cornea, causing blurry vision. The goal is to see if the best method depends on the shape of the cornea, as measured by corneal topography. Researchers will test the Jackson Cross Cylinder, Astigmatic Dial, and Stenopeic Slit techniques in 52 adults with keratoconus to find which provides the sharpest vision. The findings could help eye doctors tailor eyeglass prescriptions to each patient's unique corneal shape.