42 results found
Health topics
… Overview Hypoxia occurs when the cornea does not get enough oxygen. It is the most common … of contact lens wear, especially extended-wear lenses. The cornea has no blood supply of its own, so it gets oxygen … atmosphere. A contact lens reduces the oxygen supply to the cornea, making the cornea swell. Wearing contacts overnight …
Health topics
… (LASEK) for farsightedness use a laser to reshape the cornea so that light is refocused on the retina . The laser reshapes the cornea accurately without damaging nearby tissues. No … surgery centre. With PRK, surface skin cells of the cornea are removed, and a laser is used to reshape the …
Health topics
… laser in-situ keratomileusis) use a laser to reshape the cornea . By reshaping the cornea, these surgeries allow light to focus on the retina . … vision. With PRK, the top layer on the surface of the cornea (epithelium) is removed. Then the laser reshapes the …
Health topics
… Corneal Ring Implants for Nearsightedness On this page: … Is Done How Well It Works Risks Surgery Overview Corneal ring implants are clear pieces of plastic that can … clear, dome-shaped bulge at the front of the eye called the cornea . The implants flatten the cornea and reduce …
Health topics
… These lenses can cause eye problems, such as damage to the cornea or eye infections, just as easily as contact lenses … increased risk for serious eye infections and injury to the cornea . Contact lenses can cause eye problems, such as damage to the cornea or eye infections. Small objects that get into the …
Health topics
… the shape of the eye. In LASIK, a thin flap is made on the cornea using a blade or laser. The flap is lifted, and a laser is applied to the central corneal tissue. The laser makes contact with the cornea in a circular pattern around the central optical …
Medical tests
… Tonometry measures IOP by recording the resistance of your cornea to pressure (indentation). Eyedrops to numb the … tonometry uses a small probe to gently flatten part of your cornea to measure eye pressure and a microscope called a … eye is measured by how much force is needed to flatten your cornea. This type of tonometry is very accurate and is often …
Medical tests
… of the eye. These parts include the clear, outer covering (cornea), the lens, and the coloured part (iris). The doctor … Special lenses can be placed between the slit lamp and the cornea (or on the cornea) to help the doctor see the deeper structures of the …
Health topics
… eye, where they float on a film of tears in front of the cornea . Correct design and fitting of the lenses are … to treat eye diseases, such as keratoconus or damage to the cornea caused by injury or infection. Most people choose to … to wear contacts. Have dry eyes or problems with the cornea. People who have Sjögren's syndrome (a condition that …
Health topics
… in-situ keratomileusis) is a surgery that flattens the cornea . It's the most common laser surgery for correcting … (myopia) and astigmatism . LASIK makes a small flap in the cornea and removes some of the tissue exposed by the flap. The laser removes tissue from the cornea very accurately. It doesn't damage nearby tissues. …
