Scleral lens - Wikipedia
网页A scleral lens, also known as a scleral contact lens, is a large contact lens that rests on the sclera and creates a tear-filled vault over the cornea. Scleral lenses are designed to treat a variety of eye conditions, many of which do not respond to other forms of treatment.
What to Know About Scleral Contact Lenses - WebMD
网页2024年6月4日 · Scleral contact lenses are made of gas-permeable material. They allow oxygen to pass through to your cornea. Scleral lenses are valuable if your corneas are abnormally shaped, as in...
Scleral Contact Lenses: Types, Uses, & Costs - Vision Center
网页2024年2月21日 · Scleral contact lenses are large-diameter gas-permeable (GP) contact lenses. They cover the entire corneal surface and the white (sclera) of the eye. This provides a perfectly smooth optical surface to correct vision problems caused by corneal irregularities.
Scleral contact lenses for keratoconus and irregular corneas
网页2019年3月4日 · Scleral contacts are large-diameter gas permeable contact lenses specially designed to vault over the entire corneal surface and rest on the "white" of the eye (sclera). In doing so, scleral lenses functionally replace the irregular cornea with a perfectly smooth optical surface to correct vision problems caused by …
Sclera - Wikipedia
网页The sclera, [note 1] also known as the white of the eye or, in older literature, as the tunica albuginea oculi, is the opaque, fibrous, protective outer layer of the eye containing mainly collagen and some crucial elastic fiber. [2] In the development of the embryo, the sclera is derived from the neural crest. [3]
What Are Scleral Lenses? - Cleveland Clinic
网页2024年5月28日 · Scleral lenses are a type of contact lens that you wear on your eyes. Unlike the more common soft contact lenses that mainly rest on the cornea of your eye, scleral lenses are larger and cover more of the eye surface. They extend beyond the cornea and cover parts of the surrounding sclera (the white of your eye).
Update on Scleral Lenses - American Academy of Ophthalmology
网页2018年10月31日 · Designed to vault over the entire corneal surface and rest on the sclera, scleral lenses can morph an irregular cornea into a smooth optical surface to correct vision problems caused by keratoconus and other forms of corneal ectasia.
Sclerals 101: A Primer for Lens Fitting
网页2022年10月15日 · Scleral lens fitting is rewarding for both patients who wear them and the eye care practitioners who manage them. Through this guide on basic scleral lens management, we hope to help novice practitioners gain confidence with scleral lens management and bring these remarkable devices to patients in their community that can benefit from their use.
Introduction to scleral lenses - Mayo Clinic
网页2015年9月9日 · Muriel M. Schornack, O.D., Ophthalmology, provides an introduction to scleral lenses: Large-diameter, rigid, gas-permeable contact lenses that rest on the sclera and trap a layer of fluid between the back of the lens and the front of the cornea. Scleral lenses provide unique fitting and optical characteristics.
Scleral structure and biomechanics - PMC - National Center for ...
网页Derived from the Greek word “skleros” (meaning “hard”), the sclera’s primary role is to provide a firm and stable substrate for the retina and to protect the other mechanically vulnerable internal structures of the eye, while its opacity prevents off-axial light transmission that could otherwise degrade the retinal image.