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- $Unique_ID{BRK04089}
- $Pretitle{}
- $Title{Pars Planitis}
- $Subject{Pars Planitis PP Peripheral Retinal Inflammation Cystoid Macular
- Edema Ocular Hypotension Autoimmune Endotheliopathy}
- $Volume{}
- $Log{}
-
- Copyright (C) 1989 National Organization for Rare Disorders, Inc.
-
- 467:
- Pars Planitis
-
- ** IMPORTANT **
- It is possible the main title of the article (Pars Planitis) is not the
- name you expected. Please check the SYNONYMS listing on the next page to
- find alternate names, disorder subdivisions, and related disorders covered by
- this article.
-
- Synonyms
-
- PP
- Peripheral Retinal Inflammation
-
- Information on the following diseases can be found in the Related
- Disorders section of this report:
-
- Cystoid Macular Edema
- Ocular Hypotension
- Autoimmune Endotheliopathy
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section of this report.
-
- Pars Planitis is a vision disorder characterized by inflammation of the
- peripheral retina and pars plana (a section of the ciliary body connected to
- the retina) sections of the eye. Fluid and cells can infiltrate the clear
- gelatin-like substance (vitreous humor) near the retina and/or pars plana.
- Swelling inside the eye can also occur. These abnormalities may appear in
- one or both eyes.
-
- Symptoms
-
- Pars Planitis is primarily marked by blurred or poor night vision due to the
- presence of fluid or cells which produce collagen in the clear gelatin-like
- substance (vitreous humor) inside the eyeball. Swelling can occur inside the
- eye, particularly on the peripheral retina or macula. Glaucoma (increased
- pressure in the eye) shrinking (phthisis) of the eyeball, or other eye
- complications may occur.
-
- Causes
-
- The exact cause of Pars Planitis is not known. Inflammation of the
- peripheral retina and/or the pars plana (a section of the ciliary body which
- helps regulate the shape of the lens) is thought to cause symptoms of this
- disorder. Researchers believe it may be either a genetic or an autoimmune
- disorder. Autoimmune disorders are caused when the body's natural defenses
- (antibodies) against invading organisms suddenly begin to attack it's own
- healthy tissue.
-
- Affected Population
-
- Pars Planitis is a very rare vision disorder which affects males and females
- in equal numbers.
-
- Related Disorders
-
- Symptoms of the following disorders can be similar to those of Pars Planitis.
- Comparisons may be useful for a differential diagnosis:
-
- Cystoid Macular Edema is characterized by swelling (edema) of the central
- part of the retina as a result of abnormal leakage of fluid from capillaries.
- In Pars Planitis, swelling or leakage of fluid due to inflammation can affect
- the peripheral retina. Cystoid Macular Edema can sometimes be a complication
- of Pars Planitis.
-
- Ocular Hypotension is a condition defined as lowered blood pressure in
- the veins or capillaries inside the eye tissue. When this happens, vision
- disturbances similar to those of Pars Planitis may occur. This condition may
- in some cases be a complication of Pars Planitis.
-
- Autoimmune Endotheliopathy is an attack by the immune system on the layer
- of flat cells lining blood vessels (endothelium). This condition can occur
- in the blood vessels of the eyes as a complication of Pars Planitis, but can
- also occur alone in any part of the body.
-
- Therapies: Standard
-
- Treatment of Pars Planitis usually consists of corticosteroid drugs to
- control inflammation. Surgery may be recommended when more conventional
- treatment is not effective. High frequency surgical electrocautery
- (diathermy) or cryotherapy (freezing of tissue) may be used to seal blood
- vessels and arrest leakage.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through June
- 1988. Since NORD's resources are limited, it is not possible to keep every
- entry in the Rare Disease Database completely current and accurate. Please
- check with the agencies listed in the Resources section for the most current
- information about this disorder.
-
- Resources
-
- For more information on Pars Planitis, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- Association for Macular Diseases
- 210 East 64th Street
- New York, NY 10021
- (212) 605-3719
-
- NIH/National Eye Institute
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-5248
-
- References
-
- PARS PLANITIS AND AUTOIMMUNE ENDOTHELIOPATHY: A.A. Khodadoust, et al.; Am J
- Ophthalmol (November 15, 1986, issue 102 (5)). Pp. 633-639.
-
- ELECTROPHYSIOLOGIC CHANGES IN CHRONIC PARS PLANITIS: H.L. Cantrill, et
- al.; Am J Ophthalmol (April 1981, issue 91(4)). Pp. 505-512.
-
- THE SIGNIFICANCE OF THE PARS PLANA EXUDATE IN PARS PLANITIS: D.E.
- Henderly, et al.; Am J Ophthalmol (May 15, 1987, issue 103(5)). Pp. 669-671.
-
-