What primary condition can a scleral lens assist with?

Scleral lenses are specifically designed to create a tear-filled space between the back of the lens and the cornea. This design is particularly beneficial for individuals with corneal irregularities, which can cause visual distortions and difficulties in maintaining clear vision. Conditions such as keratoconus, corneal ectasia, and severe dry eyes can benefit significantly from the use of scleral lenses.

By vaulting over the irregularities of the cornea, scleral lenses provide a smooth optical surface, which can greatly improve visual acuity and comfort. They help to evenly distribute the pressure across the cornea, reducing discomfort associated with various corneal conditions. Thus, addressing corneal irregularities is the primary condition that these lenses are specifically designed to assist with. This makes scleral lenses especially valuable for patients who cannot achieve satisfactory vision with standard soft or rigid gas-permeable lenses.