Comment on WHAT’S UP DOC? Photo clue to eye disease

Q: I heard a baby was diagnosed with cancer in her eye just from a photo on Facebook. Is this real?A: Light enters the eye through the cornea, the clear part of the eye in front of the pupil (the black part of the eye which has muscles that allow it to enlarge to let more light in or shrink in bright conditions) and iris (the colored part of the eye), is then focused by the lens, travels through the vitreous humor (a clear gel-like substance which fills the eye and maintains its [...]