Why does visine

? Eye drops can relieve the symptoms of most eye problems, whether you have dry eyes, pink eye (conjunctivitis), red. Eye drops containing a combination of antihistamines and decongestants are often used to treat ocular allergy symptoms like watery eyes, redness, puffiness, and. Just because you can buy OTC eye drops without a prescription doesn't mean they don't have their own set of risks. Learn how these drops may do more harm.