When there is something between the front part of the eye and the retina, then you get an abnormal red reflex. Leukocoria is a white reflex that can be a congenital cataract, which is preventing ...

The red reflex is what causes "red eye" in flash photography. In people with leukocoria, the red reflex is missing, or the reflected light appears white. What Causes Leukocoria?

"Traditionally the name of this test is the ‘red reflex test’ because the colour looks reasonably red in white European people. "When performed on different populations of varying skin ...