A scleral lens is a hat-shaped lens with an average diameter of 20 mm. The diameter varies according to the diameter of the cornea, as well as the medical indication. Unlike the smaller types of lenses, scleral lenses do not rest on the sensitive cornea, but rather on the external sclera, also known as the white of the eye. The idea is actually very old. The first scleral lens dates from 1888, and scleral lenses have undergone massive development since then; scleral lenses were originally made of glass, but are now made of highly oxygen permeable materials.
As a result of modern production techniques and Simone Visser and her team’s continued development of her father’s fitting method for scleral lenses, the lens is successfully used to treat various eye conditions. The result is that the wearers enjoy improved vision, suffer less pain, or suffer less from dry eyes.