Hi, I am a community leader here not a doctor. I have a lot of experience helping eye patients including myself. Welcome to our community.
Dr. Hagen will review my answer. He will have more suggestions, but you might clarify the following:
Do you mean that one eye was red where it should have been white? How old is the photo? Is your one ey still red?
It could be harmless but it should be checked out especially if that eye does not see well. Take the photo in to the Eye MD. Find one at www.aao.org very small children it can be a sign of cataract, or malformation of the eye or a type of tumor called retinoblastoma.
JCH III MD