I'm hoping to chalk this up to a complete overreaction on my part... my sister just sent me Halloween pictures of her two-year-old son. In almost every shot, one of his eyes is reflecting red (red-eye, on the same side) even if no one else in the picture has red-eye. I recall hearing about a mom noticing a hazy white reflection in photos of her daughter's eye that turned out to be eye cancer, and just googled it, and I am satisfied that it is not the same thing.
However, I'm wondering if my nephew might have a certain odd curve to his retina to make it catch the light so consistently. Maybe it should be checked out. Or maybe it's nothing at all. Has anyone been down this road? Thank you.