Scleral contact lenses are large gas permeable contact lenses that rest on the white part of the eye (sclera). These contact lenses are made with highly breathable material, so plenty of oxygen reaches the eye through the contact lens.
Scleral contact lenses are good for people who have had trouble wearing contact lenses in the past, have dry eyes, or irregular corneas. Because the contact lenses sit on the white part of the eye, the contact lens provides more comfort right away as opposed to traditional gas permeable contact lenses.