Predicting Scleral Lens Rotation Based on Corneoscleral Toricity
Patients with corneal disease often require treatment with scleral lenses. Unlike regular soft contact lenses, these lenses are much larger and have a space between the cornea and the lens that is filled with fluid before lens application. These lenses are extremely useful in cases of extremely ocular dryness and in patients with irregular corneas. Adjusting these lenses to perfectly mold the surface of the eye is of the utmost importance to ensure that the patient is comfortable and sees well with their lenses. Current techniques to adjust scleral lenses involve a “trial and error” fitting technique, which takes a lot of chair time for both the patient and the practitioner. This study aims to evaluate the ways to fit lenses empirically using two topographers, instruments that provide information on the shape of the eye, ultimately improving lens fittings for practitioners, patients and contact lens manufacturers.