Facts on File Encyclopedia of Health and Medicine

O ocular herpes simplex An INFECTIONof the eyes with HERPES SIMPLEX VIRUS1 (HSV-1), which causes cold sores, or herpes simplex v ...

health of the EYEand vision, and detect problems with the structures and functions of the eye. The standard ophthalmic examinati ...

focused beam of light that illuminates the struc- tures of the eye. Ophthalmoscopy is the essential introductory examination of ...

People who smoke cigarettes or consume high quantities of ALCOHOL, particularly in combination, have a higher risk for developin ...

P papilledema Swelling of the optic disk, the point at which the OPTIC NERVEenters the RETINA, that results from increased press ...

INFECTION, such as BLEPHARITIS, CONJUNCTIVITIS, IRI- TIS, HORDEOLUM, KERATITIS, UVEITIS CHALAZION ENTROPION Dirty contact lense ...

Eyeglasses The conventional treatment for presbyopia is read- ing glasses, which are magnifying lenses that enlarge near objects ...

Another type of ocular prosthesis is a scleral shell, which covers a dysfunctional and disfigured eye that remains in place. The ...

R refraction test A diagnostic procedure to meas- ure REFRACTIVE ERRORSof the EYE, such as MYOPIA, HYPEROPIA, and ASTIGMATISM. A ...

HEALINGphase. PRK is particularly effective for people who have large pupils or thin corneas, because it does not create a corne ...

matched to the correct procedure, had the opera- tion performed by a competent and experienced eye surgeon, and had an uncomplic ...

blurred vision loss of VISUAL ACUITY OPHTHALMOSCOPYto examine the interior of the eye provides the diagnosis. Treatment Option ...

prone to bleeding, which further damages the sur- face of the retina. The most common forms of retinopathy are the following: R ...

and as a manifestation of MULTIPLE SCLEROSIS. Symptoms may include PAINwith eye movement diminished VISUAL ACUITY (blurred or d ...

S scleritis An INFLAMMATIONof the sclera, the white fibrous outer layer of the EYE. The inflammation develops gradually, involvi ...

intensity of the light to enter the inner eye. The examination takes only a few minutes. See also OPHTHALMIC EXAMINATION; OPHTHA ...

T tonometry A test that measures INTRAOCULAR PRESSURE(the pressure within the EYE). The pri- mary reason for tonometry is to scr ...

involve both eyes as the effects of the toxic expo- sure continue to develop. Treatment Options and Outlook Treatment is immedia ...

V–X visual acuity The ability to see objects clearly and sharply. Visual acuity assesses central vision and represents the funct ...

eyeglasses (polycarbon lenses for optimal pro- tection against shattering) working with power tools exposure to environment wit ...