Idiopathic Choroidal Neovascularization
Idiopathic choroidal neovascularization is a condition in which abnormal blood vessels grow from the choroid through Bruch's membrane and under the retinal pigment epithelium and retina. They may leak, bleed, or lead to scar tissue growth and produce symptoms of blurring and distortion. The same process occurs in macular degeneration, pathologic myopia, and ocular histoplasmosis. The difference is that in idiopathic choroidal neovascularization, there are no associated signs - no drusen, no lacquer cracks, and no previous scars. The treatment is the same, however - in 2011, usually intravitreal injections of anti vascular endothelial growth factor drugs and rarely laser photocoagulation.