What are the advantages and disadvantages of scleral contact lenses?

Scleral contact lenses provide several advantages, including improved vision for those with irregular corneas or severe dry eye, as they create a stable tear reservoir that enhances comfort. They can also protect the cornea from environmental factors and reduce symptoms of eye irritation. However, disadvantages include their larger size, which can make insertion and removal more challenging, and the potential for discomfort if not fitted properly. Additionally, they require more maintenance and cleaning compared to standard contact lenses.