What is causing my 9mth old son to have a blood-shot eye?

Lately I have noticed that my babies right eye can be occasionally blood-shot in the right hand corner. Sometimes its a lot sometimes it's hardly nothing it seems to come and go. He hasn't banged his head or had any injury as far as I know apart from the usually accidents they get themselves in at that age. I was wondering if I should be more concerned or if its just one of those things...?

He doesn't appear to have any eye infection etc. If there is a doctor out there who would be more equipped to answer this question that would be great. I don't hoover around him and there is no-where that is drafty.

can be as simple as having rubbed for 10 minutes

Keep him out of the way when you hoover up

if you've got a toddler as well, watch that he/she isn't poking the babies eye. They do this out of jealousy. Otherwise you should take him/her to the docs. Eyesight is the most precious thing

sounds like a draft
just look at where his cot is in the bedroom or where he usually sits in his little chair etc...... he could be in a little drafy area that is causing this.....?

Could be allergies. Do you ever notice him rubbing them? Unless eye seems to be watery or have a gooey discharge, it might be one of those things you can bring up at his next well checkup. Also, just for peace of mind, you could call and talk to the nurse at your pediatricians office and see if they think he needs to be seen.