However, occasionally, a nevus can transform intoВ uveal melanoma. Most choroidal nevi remain benign (non-cancerous)В and have no symptoms. Less frequently, imagingВ techniques including indocyanine green angiography, optical coherenceВ tomography angiography, and fundus autofluorescence photography areВ utilized to assist in diagnosis. SomeВ eyes have more than one nevus, and nevi may also be found in the fellow eye.В Retinal photographs of the nevus are typically performed to allow them toВ be monitored for any signs of growth on subsequent office visits.ДЄdditional diagnostic testing of larger or suspicious nevi includes opticalВ coherence tomography (OCT), ultrasound to measure the size and thicknessВ of elevated nevi, and fluorescein angiography. Most nevi are flat or have minimal elevation of 2 millimeters or less. This includes a brown to slate gray coloration withВ distinct but mildly blurred margins where the color of the nevus blends intoВ the normal retina. Many nevi can be identified by their appearance alone onВ examination of the retina. When aВ nevus causes degeneration orВ dysfunction of the overlying RPE,В fluid may accumulate under theВ retina or abnormal blood vessels ( choroidal neovascularization) mayВ develop and bleed or leak fluid. Most commonly, a choroidal nevusВ does not cause any symptomsВ and is found on routine eye exam.В However, sometimes nevi under theВ center of the retina (the macula)В can cause blurred vision.

The estimated prevalenceВ of choroidal nevi in Asian populations has been reported at 1.8% to 2.9%. The estimated prevalence of choroidal nevi in the United States has beenВ reported to be 5% with significant variation by race: 5.6% in White individuals,В 2.7% in Hispanic populations, 0.6% in Black individuals. A slightly raised choroidal nevus with drusen (yellow dots) on surface.

Colordial nevus