When To See a Doctor for Red Eye Treatment If you or someone close to you is dealing with persistent eye redness, recognizing the warning signs that require medical care can protect your vision. Occasionally, eye redness is caused by simple, non-serious factors, some warning signs should never be ignored. https://www.diigo.com/item/note/b2knr/kur4?k=9fd3d5ab3259db7fac0450a858fad7bb