i took a photo of my son today and after posting it on facebook had a message from a friend telling me to get his eyes checked coz one of his eyes is reflecting a funny colour i looked it up and it can be a symptom of eye cancer and now im panicked how do i tell the difference between normal photo reflections and an actual problem??
A common symptom of eye cancer is a white pupil in one or both eyes. This is called leucocoria and in child Chat Doctor.  However, other color changes are not so significant in terms of cancer. Since you have seen this in a photo, I suggest you see his eye yourself in normal white light and see if you can make out any difference. If not then be rest assured, It's nothing but a camera thing. If you do see a difference, there is no harm seeing an eye specialist. It may be something other than cancer.