Choroidal Neovascularization

Choroidal neovascularization (CNV) is abnormal choroidal vessels growing through Bruch membrane under the retina/RPE, causing subretinal hemorrhage, exudation, and scarring. It occurs in age-related macular degeneration, pathologic myopia, and ocular histoplasmosis. Clinical: central blurred vision/metamorphopsia/subretinal hemorrhage. Treatment: intravitreal anti-VEGF (first-line); photodynamic therapy for selected types; observe if extrafoveal.

Common Symptoms

Central blurred vision; metamorphopsia; subretinal hemorrhage/fluid on OCT; AMD/myopia history

Causes and Pathogenesis

Bruch-membrane disruption allows choroidal vessels to grow under retina, leaking/bleeding.

Treatment

Intravitreal anti-VEGF; photodynamic therapy for selected types; observe if extrafoveal

Preventive Measures

Anti-VEGF monitoring; Amsler self-monitoring in AMD.

Department to Visit

It is recommended to visit the Ophthalmology department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.