Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
1,724,163,345 visitors served.
forum mailing list For webmasters
?
New: Language forums
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

retinoschisis

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
retinoschisis /ret·i·nos·chi·sis/ (ret″ĭ-nos´kĭ-sis) splitting of the retina, occurring in the nerve fiber layer (juvenile form), or in the external plexiform layer (adult form) .
ret·i·nos·chi·sis (rtn-sk-ss)
n.
Degeneration of the retina causing splitting and the formation of cysts between retinal layers.

retinoschisis
[ret′i·nos′ki·sis]
Etymology: L, rete, net + schisis, cleavage
splitting of the retina. In the juvenile form the splitting occurs in the nerve fiber layer (stratum opticum), and in the adult form in the outer plexiform layer. The disorder is usually more benign and slowly progressive than retinal detachment. Compare retinal detachment.

retinoschisis
splitting of the retina.

retinoschisis 
A vitreoretinal degeneration characterized by splitting of the retina into two layers. It occurs either as a hereditary disease or as an acquired condition (70% of these patients are hyperopic). The X-linked hereditary condition (called juvenile retinoschisis) affects only males and usually involves the macula with loss of central vision. The congenital condition is characterized by a splitting of the nerve fibre layer from the retina whereas the acquired form, which is the most common, results in a splitting at the outer plexiform layer. The latter usually begins in the temporal periphery appearing as a coalescence of microcystoid degenerations with a smooth transparent elevation and associated with an absolute scotoma. The condition may spread to involve the entire peripheral fundus. Holes in the two layers are common and are a sign of progression. The inner layer contains blood vessels and sometimes has small whitish flakes on it, which are called 'snowflakes'.


How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Email
Feedback
Add definition
? Mentioned in
 
Medical browser? ? Full browser
 
 
Medical Dictionary
?

Disclaimer | Privacy policy | Feedback | Copyright © 2009 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.