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Polymyxin B/trimethoprim, sold under the brand name Polytrim is an antimicrobial solution for topical ophthalmic use in the treatment of acute bacterial conjunctivitis and blepharoconjunctivitis. [1] In 2022, it was the 252nd most commonly prescribed medication in the United States, with more than 1 million prescriptions. [2] [3]
Conjunctivitis may also be caused by allergens such as pollen, perfumes, cosmetics, smoke, [25] [unreliable medical source?] dust mites, Balsam of Peru, [26] or eye drops. [27] The most frequent cause of conjunctivitis is allergic conjunctivitis and it affects 15% to 40% of the population. [ 28 ]
Both seasonal allergic conjunctivitis (SAC) and perennial allergic conjunctivitis (PAC) are two acute allergic conjunctival disorders. [2] SAC is the most common ocular allergy. [1] [8] Symptoms of the aforementioned ocular diseases include itching and pink to reddish eye(s). [2] These two eye conditions are mediated by mast cells.
“Eye drops are best used like other allergy medication: Daily if you are having frequent symptoms or intermittently when allergies are less bothersome,” says Dr. Waibel. Keep the eye drops ...
Antibiotic eye drops are prescribed when infection conjunctivitis is caused by bacteria but not when it is caused by a virus. In the case of allergic conjunctivitis, artificial tears can help dilute irritating allergens present in the tear film.
Chloramphenicol is an antibiotic useful for the treatment of a number of bacterial infections. [5] This includes use as an eye ointment to treat conjunctivitis. [6] By mouth or by injection into a vein, it is used to treat meningitis, plague, cholera, and typhoid fever. [5]
Nearly 45,000 children received care for pink eye at a doctor's office, eye clinic or emergency room and 69% were prescribed antibiotics, which come in drops and ointments.
Side effects may include allergic reactions, eye pain, and dilated pupils. [ 2 ] [ 4 ] [ 3 ] It is unclear if use in pregnancy is safe. [ 1 ] Nephazoline works by resulting in constriction of blood vessels thus decreasing redness while pheniramine works by blocking the effects of histamine to stop itching.