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Topic: Retinitis

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	Retinitis Pigmentosa (Site not responding. Last check: 2007-10-13)
		Retinitis pigmentosa is an inherited condition of the retina in which specific photoreceptor cells, called rods, degenerate.
		Retinitis pigmentosa is probably caused by mutations in at least ten different genes.
		Retinal appearance of a patient with retinitis pigmentosa caused by a mutation in the rhodopsin gene.
	www.ophth.uiowa.edu /RP.html (318 words)

	Retinitis Pigmentosa
		Retinitis pigmentosa (RP) is the name given to a group of inherited eye diseases that affect the retina.
		Symptoms of retinitis pigmentosa are most often recognized in children, adolescents and young adults, with progression of the disease continuing throughout the individual’s life.
		It is now possible, in some families with X-linked retinitis pigmentosa or autosomal dominant retinitis pigmentosa, to perform a test on genetic material from blood and other cells to determine if members of an affected family have one of several retinitis pigmentosa genes.
	www.blindness.org /retinitis-pigmentosa.asp (578 words)

	Retinitis Pigmentosa - Center for Macular Degeneration - University of Iowa
		Retinitis pigmentosa is a term used to refer to a group of disorders that affect the photoreceptor cells of the retina.
		In most individuals with retinitis pigmentosa, the rod photoreceptor cells are selectively affected and as a result, these individuals experience difficulty seeing in dim light and a progressive loss of their peripheral vision.
		Retinitis pigmentosa is quite rare, affecting only 1 in 4,000 people in the population.
	cmd.ophth.uiowa.edu /rp/index.html (307 words)

	Retinitis Pigmentosa
		Retinitis Pigmentosa (RP) is one name for a large group of inherited visual disorders that causes progressive degeneration of the retina of the eyes.
		Retinitis Pigmentosa usually begins as night or dim light impairment (that is, difficulty in adapting to or recovering function in dim light after being in bright light for any length of time) followed sometime later by tunnel vision.
		Retinitis pigmentosa and ataxia caused by a mutation in the gene for the a-tocopherol-transfer protein.
	hw.healthdialog.com /kbase/nord/nord21.htm (2452 words)

	What is Retinitis Pigmentosa?
		Retinitis pigmentosa causes the degeneration of photoreceptor cells in the retina.
		Retinal cells are among the most specialized cells in the human body and depend on a number of unique genes to create vision.
		Retinitis Pigmentosa can be passed to succeeding generations by one of three genetic inheritance patterns—autosomal dominant, autosomal recessive, or X-linked inheritance.
	www.blindness.org /content.asp?id=45 (956 words)

	eMedicine - Retinitis, CMV : Article by Michael Altaweel, MD, FRCS(C) (Site not responding. Last check: 2007-10-13)
		Retinal detachment repair is required in 5-50% of patients with CMV retinitis (depending on the trial).
		Retinal detachment is a potential complication of CMV retinitis, with a 1-year risk of 5-50%.
		Saran BR, Pomilla PV: Retinal vascular nonperfusion and retinal neovascularization as a consequence of cytomegalovirus retinitis and cryptococcal choroiditis.
	www.emedicine.com /oph/topic701.htm (7373 words)

	Cytomegalovirus retinitis and acquired immunodeficiency syndrome.
		In five patients, CMV retinitis was the initial AIDS-defining opportunistic infection (11% of patients with CMV retinitis and 3% of patients with AIDS).
		Retinal detachments developed in seven patients (15%) and in four were present before the institution of ganciclovir therapy.
		Bilateral CMV retinitis was present in 35% of patients at presentation and subsequently developed in nine (60%) of 15 patients while not being treated with ganciclovir.
	www.aegis.com /aidsline/1989/apr/M8940088.html (408 words)

	genome.gov \| Learning about Retinitis Pigmentosa
		Retinitis pigmentosa (RP) is the name given to a group of inherited eye diseases that affect the retina (the light-sensitive part of the eye).
		Retinitis pigmentosa is an inherited disorder, and therefore not caused by injury, infection or any other external or environmental factors.
		Retinal International is a voluntary charitable umbrella association of 34 national societies each of which is formed by people with RP, Usher Syndrome, macular degeneration and allied retinal dystrophies, their families and friends.
	www.genome.gov /13514348 (1344 words)

	Retinitis Pigmentosa - VisionChannel
		Retinitis pigmentosa is a term that refers to group of hereditary disorders that affect the retinaÂ’s ability to respond to light.
		Retinitis pigmentosa may be caused by mutations in any one of at least ten different genes, resulting in a malfunction in the retinal pigment epithelial (RPE) cells and a breakdown of a portion of the outer segment disc membrane of photoreceptor cells.
		Retinitis pigmentosa is caused by a genetic defect.
	www.visionchannel.net /retinitis (413 words)

	Handbook of Ocular Disease Management - Retinitis Pigmentosa
		Retinal pigmentary changes occur in the form of fine mottling or granularity with surrounding areas of atrophy.
		Retinitis pigmentosa is believed to stem from a genetic defect, which leads to a disturbance in the retinal pigment epithelium (RPE) and the breakdown of the photoreceptors' outer segment disc membranes.
		Understandably, the untreatable progressive nature of retinitis pigmentosa is extremely unsettling for the patient and their loved ones; it is often beneficial to recommend psychological or family counseling early in the disease.
	www.revoptom.com /handbook/sect5q.htm (802 words)

	A Guide to Retinitis Pigmentosa
		Retinitis Pigmentosa is the name given to a group of disorders of the Retina, all of which result in a progressive reduction in vision.
		Retinitis Pigmentosa is a group of hereditary disorders whose common feature is a gradual deterioration of the light sensitive cells of the Retina.
		The main features visible on the fundus are the retinal blood vessels, which spread out from a pale, whitish disc, the head of the optic nerve and in the centre a somewhat denser area called the macular.
	www.brps.org.uk /Graphics/G_Guide.html (2218 words)

	Retinitis Pigmentosa
		Retinitis pigmentosa is a term coined by Donders in 1855.
		Retinal Implant Project The goal of the Retinal Implant Project is to develop a microelectronic prosthesis to restore some vision to patients with retinal disease, specifically macular degeneration and retinitis pigmentosa.
		Retinitis Pigmentosa International Retinitis Pigmentosa International supports research to end blindness from degenerative eye disease, promote a public awareness and education campaign, and provide human services programs to better the quality of life for those with vision loss.
	www.lowvision.org /retinitis_pigmentosa.htm (1122 words)

	New Treatment Guidelines for Opportunistic Infections Recommend Valganciclovir for AIDS-related CMV Retinitis
		CMV retinitis usually occurs as unilateral disease, but in the absence of therapy, viremic dissemination results in bilateral disease in the majority of patients.
		Central retinal lesions or lesions impinging on the macula are associated with decreased visual acuity or central field defects.
		The choice of initial therapy for CMV retinitis should be individualized based on the location and severity of the lesion(s), the level of underlying immune suppression, and other factors such as concomitant medications and ability to adhere to treatment.
	www.hivandhepatitis.com /recent/ois/cmv/020205_c.html (933 words)

	The Body: Better Treatments for CMV Retinitis
		The vast majority of individuals with serious complications had retinitis, an inflammation of the inner eye that can lead to blurred vision, permanent damage to the lining of the eye, and eventually to blindness.
		The daily intravenous infusions that were once required to slow the progression of CMV retinitis exacted a heavy toll, both in dollars and in quality of life, and patients were justly apprehensive about beginning infusion therapy.
		Although the ideal treatment for CMV retinitis remains elusive, the outlook is much brighter than it was even a few years ago.
	www.thebody.com /hivnews/aidscare/feb98/cmv.html (1594 words)

	Retinitis Pigmentosa
		Retinitis pigmentosa is actually the name given to a group of hereditary eye disorders, all of which involve the eye's retina, the light-sensitive nerve layer that lines the back of the eye, and all of which cause a gradual, yet progressive, loss or reduction in visual ability.
		Retinitis pigmentosa is caused by a variety of different inherited retinal defects - all of which affect the ability of the retina to sense light.
		Some persons with retinitis pigmentosa experience a slow, very progressive loss of vision, while others lose their visual ability much more quickly and severely.
	www.healthsystem.virginia.edu /uvahealth/adult_eye/retin.cfm (341 words)

	Retinitis pigmentosa (Site not responding. Last check: 2007-10-13)
		Retinitis pigmentosa (RP) is a rare, hereditary disease that causes the rod photoreceptors in the retina to gradually degenerate.
		The disease may be X-linked (passed from a mother to her son), autosomal recessive (genes required from both parents) or autosomal dominant (gene required from one parent) trait.
		The classic sign of RP is clumps of pigment in the peripheral retinal called "bone-spicules." A test called electroretinography (ERG) may also be ordered to study the eye's response to light stimuli.
	www.theretinasource.com /conditions/retinitis_pigmentosa.htm (433 words)

	Usher's Syndrome and Retinitis Pigmentosa: Hear-it
		A person who is suffering from this disease is born with a certain degree of hearing loss which may vary from person to person.
		Retinitis Pigmentosa is normally present in a child under the age of 10.
		In another form of Usher´s syndrome, the person will be suffering from partial hearing loss, and Retinitis Pigmentosa will be present before the patient reaches 20 years of age.
	www.hear-it.org /page.dsp?page=330 (269 words)

	Retinitis Pigmentosa or RP - AllAboutVision.com
		Retinitis pigmentosa is a rare, inherited disease in which the light-sensitive retina of the eye slowly and progressively degenerates.
		During later stages of retinitis pigmentosa, only a small area of central vision remains, along with slight peripheral vision.
		If neither of your parents have retinitis pigmentosa, at least one of them must be a carrier of the gene.
	www.allaboutvision.com /conditions/retinapigment.htm (384 words)

	Retinitis Pigmentosa - WrongDiagnosis.com
		Group of inherited abnormalities in the retina; characterized by night blindness, retinal atrophy, weakening of the retinal vessels, pigment clumping, and contraction of the visual field.
		Retinitis Pigmentosa is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).
		This means that Retinitis Pigmentosa, or a subtype of Retinitis Pigmentosa, affects less than 200,000 people in the US population.
	www.wrongdiagnosis.com /r/retinitis_pigmentosa/intro.htm (805 words)

	Retinitis pigmentosa
		Retinitis pigmentosa is a progressive degeneration of the retina (part of the eye) which affects night vision and peripheral vision.
		The hallmark of the disease is the presence of dark pigmented spots in the retina.
		The main risk factor is a family history of retinitis pigmentosa.
	www.umm.edu /ency/article/001029.htm (292 words)

	Retinitis pigmentosa - MayoClinic.com
		Retinitis pigmentosa (RP) is the name for a group of inherited eye diseases characterized by poor night vision and a slow loss of side (peripheral) vision.
		The disorder may be caused by defects in a number of different genes, which result in progressive degeneration of the retina.
		Treatment is usually directed at managing some of the other problems that may be associated with retinitis pigmentosa, such as macular degeneration and cataracts.
	www.mayoclinic.com /health/retinitis-pigmentosa/AN01200 (342 words)

	Cytomegalovirus Retinitis
		CMV retinitis may affect one eye at first, but usually progresses to both eyes and becomes worse as the patient's ability to fight infection decreases.
		Patients with CMV retinitis are at risk of retinal detachment, hemorrhages, and inflammation of the retina that can lead to permanent loss of vision and even blindness.
		When managing CMV retinitis, the doctor’s goal is to slow the progression of the disease and to treat related eye problems.
	www.stlukeseye.com /Conditions/CMV.asp (402 words)

	What is Retinitis Pigmentosa?
		Retinitis Pigmentosa (RP) is the name given to a group of hereditary diseases of a part of the eye known as the Retina.
		It must be pointed out however that not all people with RP start with night blindness, for example, it is rarely an early symptom for those who start with central loss of vision.
		Gyrate Atrophy: This disease is associated with a deficiency in the enzyme ornithine aminotransferase.
	www.brps.org.uk /Graphics/G_RP.html (1616 words)

	Retinitis pigmentosa definition - Medical Dictionary definitions of popular medical terms
		Retinitis pigmentosa: Any one of a large group of inherited disorders in which abnormalities of the photoreceptors (the rods and cones) in the retina lead to progressive visual loss.
		People with retinitis pigmentosa (RP) first experience defective dark adaptation ("night blindness"), then constriction of the visual field ("tunnel vision") and eventually loss of central vision.
		RP may be inherited in a number of different ways: as an autosomal dominant, autosomal recessive, or X-linked recessive trait or as a mitochondrial disorder.
	www.medterms.com /script/main/art.asp?articlekey=22264 (188 words)

	The Body: Improved Treatment of CMV Retinitis
		CMV retinitis may be asymptomatic, but it usually presents with visual changes.
		Treatment of cytomegalovirus retinitis in patients with the acquired immunodeficiency syndrome.
		Data presented at the 4th Conference on Retroviruses showed that once-daily dosing with oral valganciclovir resulted in serum concentrations of active drug that were comparable to the levels achieved when IV ganciclovir is administered at the induction doses of 10 mg/kg/day.
	www.thebody.com /hivnews/newsline/feb98/cmv.html (2471 words)

	Retinitis Pigmentosa
		The term retinitis pigmentosa (RP) describes a group of heritable retinal diseases characterized by night vision difficulties, and peripheral visual field loss with pigment deposition in the retina.
		Most cases of retinitis pigmentosa are inherited in an autosomal recessive pattern, meaning that an individual must inherit an abnormal gene from both parents to be affected; those with only one abnormal gene are "carriers" and typically have no symptoms.
		This test measures the electrical activity of the retina and is usually severely compromised even early in the course of retinitis pigmentosa.
	www.focusonretina.com /ret_pig.htm (393 words)

	Cytomegalovirus Retinitis (CMV Retinitis): Definition, Symptoms, & Treatment-Kellogg Eye Center
		Cytomegalovirus retinitis, or CMV retinitis, is the most common severe infection affecting the eye in patients with AIDS.
		Retinal surgeons at the Kellogg Eye Center perform these surgeries on a routine basis.
		If you or someone you know has been diagnosed with CMV retinitis and are being treated with intravenous medications, you may want to ask your doctor whether the implant is appropriate for you.
	www.kellogg.umich.edu /patientcare/conditions/cmv.html (324 words)

	AllRefer Health - CMV Retinitis
		One serious CMV infection is CMV retinitis, which can cause blindness.
		Retinitis usually begins in one eye, but often progresses to the other eye.
		Patients with CMV retinitis also have a 25-40% of developing retinal detachment, in which the retina detaches from the nerves of the eye, causing blindness.
	health.allrefer.com /health/cmv-retinitis-info.html (471 words)

	Retinitis Pigmentosa: Retinal Disorders: Merck Manual Home Edition
		Introduction· Blockage of Central Retinal Arteries and Veins· Cancers Affecting the Retinal· Detachment of the Retina·; Diabetic Retinopathy· Endophthalmitis· Hypertensive Retinopathy· Macular Degeneration (Age-Related)· Macular Pucker·Retinitis Pigmentosa
		Retinitis pigmentosa is a rare, progressive degeneration of the retina that eventually causes blindness.
		However, an experimental treatment in which fetal retinal tissue is transplanted into people with retinitis pigmentosa has been reported to improve vision.
	www.merck.com /mmhe/sec20/ch234/ch234e.html (258 words)

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