Other than eye drop, how to cure red eye?

Depends on cause!: Red eyes can be from many sources from simple irritation to severe rheumatoid melting of sclera. In cases of rheumatoid melts, drugs in the catagory of chemotherapy are necessary! so, it depends on cause. Most often eye drops, neutritional supplements, and occasionally oral medications are used.

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.