Corneal transplant carries a significant immediate risk, including the risk of rejection and serious infection. Scleral lenses are a non-invasive option that does not carry these risks. In addition, scleral lenses do not carry any of the long-term risks of corneal transplant, such as limited lifetime of the graft, risk of wound rupture during trauma and a lack of stable vision after a year. Finally, around half of patients who choose corneal transplant still need to wear some type of lens to achieve their desired visual acuity.