What is tetrahydrozoline ophthalmic?
Tetrahydrozoline ophthalmic narrows the blood vessels (veins and arteries) in your eyes. Tetrahydrozoline ophthalmic is used to relieve redness, burning, irritation, and dryness of the eyes caused by wind, sun, and other minor irritants. Tetrahydrozoline ophthalmic may also be used for other purposes not listed in this medication guide.