My eye aches and turns reddish?

See an eyedoc: Pain and redness=inflammation. You probably need eye drops, but could be a early infection. Go see an eye doctor.

Many things: Red eyes can be from inflammation from chronic allergies, dry eye syndrome, blepharitis (minor infection of the eyelid margin), meibomianitis (blocked ducts on eyelid margin. In addition, you may have inflammation on the top of the eye, episcleritis or scleritis or in the front to the eye, irtis. You need the right diagnosis to get the treatment to get rid of red eyes. You need an eye exa.