-Bilateral grey to white band of peripheral corneal opacification.
FEATURES:
-Bilateral.
-Fine dots with a clear zone between it and limbus (clear interval of Vogt).
-Diffuse central border with sharp peripheral border.
-Begins superiorly & inferiorly and involves entire periphery.
-Asymmetric in Unilateral Carotid vascular disease ( decreased arcus ) & chronic ocular hypotony (increased arcus)
LOCATION:
-Begins in DEEP STROMA with progression to superficial stroma.
COMPOSITION:
-Extracellular corticosteroid esters of lipoproteins of low density.
-Lipid material leaks from limbal capillaries with central flow being limited because of a functional barrier to the flow of large molecules on the cornea.
ARCUS JUVENILIS:
-Associated with increased plasma cholesterol and LDL levels in men younger than 50 years.
-Increased risk of mortality from CHD and Cardiovascular disease
-Increased risk for type 2a dyslipoproteinemia.
www.ophthalmobytes.com
Image from Rajan Eye Care Hospital #ophthalmology#ophthal#doctor#health#medical#vision#education#optometry#medicalstudent#optometrist#medicine#eye#ophtho#ophthalmologist#ophthalmo#med#medicaleducation#ophthalmologyresident#ophthalmologyresidency#apaoyo#cornealdegeneration#cornea#degeneration#arcus#arcussenilis