Besifloxacin Eye Drops: What They Are and When to Use Them

If you’ve ever dealt with a red, itchy eye, you know how annoying it can be. Besifloxacin is a prescription‑only eye drop that targets bacterial infections like conjunctivitis and keratitis. It belongs to a class called fluoroquinolones, which means it attacks bacteria’s DNA and stops them from multiplying. Doctors usually recommend it when a bacterial cause is suspected, especially after a quick eye exam.

How to Use Besifloxacin Correctly

Getting the most out of besifloxacin is mostly about following a simple routine. Wash your hands, tilt your head back, and pull down the lower eyelid to make a tiny pocket. Squeeze one drop into that pocket, close your eye gently for about 30 seconds, and press the inner corner with your fingertip to keep the medicine from draining away. Most prescriptions say one drop three times a day for seven days, but always stick to what your doctor wrote.

Common Side Effects and When to Call a Doctor

Like any medication, besifloxacin can cause mild irritation. Expect a temporary stinging or burning feeling right after the drop, and maybe a bit of blurry vision for a few minutes. If you notice swelling, severe pain, worsening redness, or any new discharge after a few days, that could signal an allergic reaction or that the infection isn’t responding. In those cases, contact your eye‑care professional right away.

Because besifloxacin is a fluoroquinolone, it’s important to avoid using it for viral or allergic eye conditions—they won’t help and could delay proper treatment. If you’re unsure why you were prescribed besifloxacin, ask your doctor to explain the diagnosis.

Another practical tip: don’t share the bottle with anyone else, even if they have similar symptoms. Eye drops are sterile, and sharing can spread infections. Keep the cap on tightly, store the bottle at room temperature, and discard it after the expiration date or after the prescribed course—no need to finish a bottle if you’re done early.

While rare, fluoroquinolones have been linked to tendon problems in the body. The risk is extremely low for eye drops, but if you have a history of tendon issues or are taking other fluoroquinolones, let your doctor know.

Bottom line: besifloxacin is a fast‑acting, targeted option for bacterial eye infections. Use it exactly as prescribed, watch for any unusual symptoms, and keep your eyes clean. With the right approach, you’ll be back to clear, comfortable vision in about a week.