What does angioid streaks mean?
Definitions for angioid streaks
an·gioid streaks
This dictionary definitions page includes all the possible meanings, example usage and translations of the word angioid streaks.
Wikipedia
Angioid streaks
Angioid streaks, also called Knapp streaks or Knapp striae, are small breaks in Bruch's membrane, an elastic tissue containing membrane of the retina that may become calcified and crack. Up to 50% of angioid streak cases are idiopathic. It may occur secondary to blunt trauma, or it may be associated with many systemic diseases. The condition is usually asymptomatic, but decrease in vision may occur due to choroidal neovascularization.
Wikidata
Angioid streaks
Angioid streaks, also called Knapp streaks or Knapp striae are small breaks in Bruch's membrane, an elastic tissue containing membrane of the retina that may become calcified and crack. They were first described by Robert Walter Doyne in 1889 in a patient with retinal hemorrhages. A few years later, ophthalmologist Hermann Jakob Knapp called them "angioid streaks" because of their resemblance to blood vessels. From histopathological research in the 1930s, they were discovered to be caused by changes at the level of Bruch's membrane. Presently, it is believed that its pathology may be a combination of elastic degeneration of Bruch's membrane, iron deposition in elastic fibers from hemolysis with secondary mineralization, and impaired nutrition due to stasis and small vessel occlusion. Angioid streaks are often associated with pseudoxanthoma elasticum, but have been found to occur in conjunction with other disorders, including Paget's disease, sickle cell anemia and Ehlers-Danlos Syndrome. These streaks can have a negative impact on vision due to choroidal neovascularization or choroidal rupture. Also, vision can be impaired if the streaks progress to the fovea and damage the retinal pigment epithelium.
U.S. National Library of Medicine
Angioid Streaks
Small breaks in the elastin-filled tissue of the retina.
Numerology
Chaldean Numerology
The numerical value of angioid streaks in Chaldean Numerology is: 6
Pythagorean Numerology
The numerical value of angioid streaks in Pythagorean Numerology is: 8
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"angioid streaks." Definitions.net. STANDS4 LLC, 2025. Web. 5 Feb. 2025. <https://www.definitions.net/definition/angioid+streaks>.
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