angioid streaks(redirected from Knapp striae)
calcification of lamina basalis choroideae visible in the peripapillary fundus oculi; associated with pseudoexanthoma elasticum, sickle cell disease, and Paget disease; predisposing to choroidal neovascularization.
an·gi·oid streaks(an'jē-oyd strēks)
Gray, orange, or red wavy branching lines in Bruch's membrane.
Mentioned in: Pseudoxanthoma Elasticum
Knapp,Herman J., U.S. ophthalmologist, 1832-1911.
Knapp cataract knife
Knapp eye speculum
Knapp iris hook
Knapp iris knife needle
Knapp iris repositor
Knapp iris scissors
Knapp iris spatula
Knapp lacrimal sac retractor
Knapp lens scoop
Knapp lid operation
Knapp pterygium operation
Knapp streaks - striae in Bruch membrane occurring in a variety of systemic disorders affecting elastic tissue. Synonym(s): angioid streaks; Knapp striae
Knapp striae - Synonym(s): Knapp streaks
Degeneration of Bruch's membrane of the choroid characterized by brown or reddish lines or streaks in the fundus of the eye. The condition is bilateral, although one eye may be affected more than the other. Patients may occasionally be aware of some visual impairment in the visual field depending on the location of the streaks. The membrane is very fragile and liable to rupture in the case of ocular trauma, which may lead to macular haemorrhage and visual loss. Angioid streaks are often found in association with pseudoxanthoma elasticum (an eruption of small, superficial, solid elevation of the skin of the neck and other areas), Paget's disease, Ehlers-Danlos syndrome or sickle-cell anaemia. See choroidal neovascularization.