title: Scleral lens for keratoconus: technology update.
abstract: Scleral lenses are large diameter lenses which rest over the sclera, unlike the conventional contact lenses which rest on the cornea. These lenses are fitted to not touch the cornea and there is a space created between the cornea and the lens. These lenses are inserted in the eyes after filling with sterile isotonic fluid. Generally, scleral contact lenses are used for high irregular astigmatism as seen in various corneal ectatic diseases such as keratoconus, pellucid marginal degeneration, or/and as liquid bandage in ocular surface disorders. In this article, we review the new developments, that have taken place over the years, in the field of scleral contact lenses as regard to new designs, materials, manufacturing technologies, and fitting strategies particularly for keratoconus.
authors.affiliation: L V Prasad Eye Institute, Hyderabad, India.
authors.forename: Varsha M
authors.initials: VM
authors.lastname: Rathi
authors.affiliation: School of Optometry and Vision Science, University of New South Wales, Kensington, NSW, Australia.
authors.forename: Preeji S
authors.initials: PS
authors.lastname: Mandathara
authors.affiliation: L V Prasad Eye Institute, Hyderabad, India.
authors.forename: Mukesh
authors.initials: M
authors.lastname: Taneja
authors.affiliation: L V Prasad Eye Institute, Hyderabad, India.
authors.forename: Srikanth
authors.initials: S
authors.lastname: Dumpati
authors.affiliation: L V Prasad Eye Institute, Hyderabad, India.
authors.forename: Virender S
authors.initials: VS
authors.lastname: Sangwan
keywords: PROSE; keratoconus; scleral lens; technology update