Scleral lenses are large-diameter gas permeable contact lenses that vault over the cornea (the clear front of the eye) and rest over the sclera (the white of the eye). The scleral lens provides a smooth optical surface that works to correct vision problems caused by keratoconus and other irregular cornea problems.
They are fitted to leave space between the lens and the cornea, unlike conventional lenses that rest on the cornea. Scleral lenses are filled with isotonic fluid before installing. The space between the cornea and the back surface of the lenses acts as a tear reservoir to help moisten the eye. This moisture helps to fight dry eyes, providing comfort for people suffering from a severe ocular disease.
If you want to wear contact lenses but have had trouble wearing them in the past — or you've been told you are not a good candidate for contacts — scleral contact lenses may be the solution you are looking for.
