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From Wikipedia, the free encyclopedia A cataract is a clouding that develops in the crystalline lens of the eye or in its envelope, varying in degree from slight to complete opacity and obstructing the passage of light. Early in the development of age-related cataract the power of the lens may be increased, causing near-sightedness (myopia), and the gradual yellowing and opacification of the lens may reduce the perception of blue colours. Cataracts typically progress slowly to cause vision loss and are potentially blinding if untreated. |
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What is Glaucoma? Glaucoma is an eye disease that slowly steals your sight without warning, At the beginning of the disease, there may be no symtoms. Half of the people with glaucoma may not know they have it.
Loss of eye sight is caused by damage to the nerve in your eye because of pressure in your eye.This nerve acts like an electric cable with over a million wires. It is responsible for carrying pictures from the eye to the brain. |
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From Wikipedia, the free encyclopedia Macular degeneration is a medical condition usually of older adults which results in a loss of vision in the center of the visual field (the macula) because of damage to the retina. It occurs in “dry” and “wet” forms. It is a major cause of blindness in the elderly (>50 years). Macular degeneration can make it difficult or impossible to read or recognize faces, although enough peripheral vision remains to allow other activities of daily life. |
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From Wikipedia, the free encyclopedia Retinal detachment is a disorder of the eye in which the retina peels away from its underlying layer of support tissue. Initial detachment may be localized, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It is a medical emergency. The retina is a thin layer of light-sensitive tissue on the back wall of the eye. The optical system of the eye focuses light on the retina much like light is focused on the film in a camera. The retina translates that focused image into neural impulses and sends them to the brain via the optic nerve. Occasionally, posterior vitreous detachment, injury or trauma to the eye or head may cause a small tear in the retina. The tear allows vitreous fluid to seep through it under the retina, and peel it away like a bubble in wallpaper. |
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LASIK or Lasik (laser-assisted in situ keratomileusis) is a type of refractive laser eye surgery performed by ophthalmologists for correcting myopia, hyperopia, and astigmatism. The procedure is generally preferred to photorefractive keratectomy, PRK, (also called ASA, Advanced Surface Ablation) because it requires less time for the patient's recovery, and the patient feels less pain overall. However, there are instances where a PRK/ASA procedure is medically justified as being a better alternative to LASIK. Many patients choose LASIK as an alternative to wearing corrective eyeglasses or contact lenses. |
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Oculoplastic surgery includes a wide variety of surgical procedures that deal with the orbit (eye socket), eyelids, tear ducts and the face. In the United States, United Kingdom and parts of Europe, oculoplastic surgeons are ophthalmologists who deal exclusively with these procedures. The South African Society of Oculoplastic Surgeons (SASOPS) was formed in 2006. Oculoplastic procedures
These can be either reconstructive or cosmetic. ReconstructiveRemoval of tumours of the eyelid and orbit and reconstruction of the eyelids and periorbital area. The emphasis of reconstruction is on proper function of the eyelids and aesthetic appearance. |
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