Prevalence and Incidence of Iridocorneal Endothelial Syndrome
Ophanet, who are a consortium of European partners,
currently defines a condition rare when if affects 1 person per 2,000.
They list Iridocorneal Endothelial Syndrome as a "rare disease".
More information about Iridocorneal Endothelial Syndrome is available from Orphanet
Iridocorneal Endothelial Syndrome Prevalence: Book Excerpts
Prevalence/Incidence of Iridocorneal Endothelial Syndrome: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Iridocorneal Endothelial Syndrome.
Corneal abrasion:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
A corneal abrasion usually results from a foreign body, such as a cinder or a piece of dust, dirt, or grit that becomes embedded under the eyelid. Even if the foreign body is washed out by tears, it may still injure the cornea. Small pieces of metal that get in the eyes of workers who don’t wear protective glasses quickly form a rust ring on the cornea and cause corneal abrasion. Such abrasions also commonly occur in the eyes of people who fall asleep wearing hard contact lenses or whose lenses aren’t fitted properly.
A corneal scratch produced by a fingernail, a piece of paper, or other organic substance may cause a persistent lesion. The epithelium doesn’t always heal properly, and a recurrent corneal erosion may develop, with delayed effects more severe than the original injury.
In the United States, corneal abrasions are a common ophthalmologic cause of emergency department visits. Incidence is highest among younger, physically active individuals; corneal abrasions are rare in elderly people.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Premature rupture of membranes:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Although the cause of PROM is unknown, malpresentation and contracted pelvis commonly accompany the rupture. Predisposing factors may include:
❑ poor nutrition and hygiene, and lack of proper prenatal care
❑ incompetent cervix (perhaps as a result of abortions)
❑ increased intrauterine tension due to hydramnios or multiple pregnancies
❑ defects in the amniochorial membranes’ tensile strength
❑ uterine infection.
PROM occurs in nearly 10% of all pregnancies over 20 weeks’ gestation.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Glaucoma:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Chronic open-angle glaucoma results from overproduction of aqueous humor or obstruction to its outflow through the trabecular meshwork or the canal of Schlemm. (See Normal flow of aqueous humor, page 1184.) This form of glaucoma, which is estimated to be present in 1% to 2% of people older than age 40, is frequently familial in origin and affects 90% of all patients with glaucoma. Diabetes and systemic hypertension have also been associated with this form of glaucoma.
Acute angle-closure (narrow-angle) glaucoma results from obstruction to the outflow of aqueous humor due to anatomically narrow angles between the anterior iris and the posterior corneal surface, shallow anterior chambers, a thickened iris that causes angle closure on pupil dilation, or a bulging iris that presses on the trabeculae, closing the angle (peripheral anterior synechiae).
Blacks are four times more likely to have this disorder than whites, and people with a family history of open-angle glaucoma are twice as likely to develop it than people without a family history of this disorder. The use of systemic anticholinergic medications, such as atropine or eye dilation drops, in a person who’s already at high-risk for acute glaucoma increases the risk. Other risk factors include farsightedness and age-related changes that create an increase in intraocular pressure.
Congenital glaucoma occurs when there is an abnormal fluid drainage angle of the eye. It may be caused by congenital infections such as TORCH virus (toxoplasmosis, other [varicella, mumps, parvovirus, human immunodeficiency virus], rubella, cytomegalovirus, and herpes), Sturge-Weber syndrome, or retinopathy of prematurity.
Secondary glaucoma can result from uveitis, trauma, or drugs (such as steroids). Neovascularization in the angle can result from vein occlusion or diabetes.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
About prevalence and incidence statistics:
The term 'prevalence' of Iridocorneal Endothelial Syndrome usually refers to the estimated population
of people who are managing Iridocorneal Endothelial Syndrome at any given time.
The term 'incidence' of Iridocorneal Endothelial Syndrome refers to the annual diagnosis rate,
or the number of new cases of Iridocorneal Endothelial Syndrome diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.
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