High Internal Reflectivity

[smurfchops]

What does this mean, in relation to a choroidal naeve (a freckle in the eye).

[rojash]

Most of the light that enters it, instead of passing through, is reflected back inside. It's used as a means of determining whether it's a benign naevus or a potentially malignant melanoma (melanomas tend to have a low internal reflectivity).

[smurfchops]

Thanks rojash, very helpful.