Scleral contacts are large gas permeable contact lenses that are specially designed to vault over the entire corneal surface and rest on the white part of the eye, called the sclera, in a way that soft lenses and Rigid Gas Permeables do not. These lenses are usually prescribed for those who cannot get the visual correction needed from soft contact lenses or glasses because of corneal defects from surgery or disease.
Scleral lenses are filled with saline solution before insertion to ensure crisp, clear vision. This fluid protects the cornea, and in some cases, allows it to heal in a sterile environment.
Hybrid contact lenses are designed with a rigid gas permeable contact lens (RGP) in the center with a soft contact lens skirt surrounding it. Hybrid lenses are typically chosen for patients with irregular corneas, such as those who have had refractive surgery in the past, or those with keratoconus. The lenses are filled with solution before insertion, creating a new ‘false’ cornea that correctly refracts light, improving vision in a way that glasses can’t.