Long-term use of certain medications can cause the sclera to turn blue. A rare condition called osteogenesis imperfecta, ingesting silver, and conditions that cause thinning of the sclera can also ...

Because scleral lenses are large, they can correct vision affected by the shape of your cornea, such as from scarring, surgery, or keratoconus (corneal thinning). Medicare doesn’t typically ...

Because of the size of scleral lenses, they can correct vision affected by the shape of a person’s cornea. Scarring, surgery, or corneal thinning (keratoconus) can all affect the cornea’s shape.