The right eye drops for pink eye depend on whether your case is caused by bacteria, a virus, or allergies. Bacterial pink eye needs prescription antibiotic drops, viral pink eye clears up on its own with lubricating drops for comfort, and allergic pink eye responds best to over-the-counter antihistamine drops. Figuring out which type you have is the first step toward picking the right bottle off the shelf or knowing when you need a prescription.
Bacterial Pink Eye: Prescription Antibiotic Drops
Bacterial pink eye is the type most people picture: thick yellow or green discharge, crusty eyelids in the morning, and redness that usually starts in one eye before spreading to the other. This is the only form of pink eye that requires antibiotic eye drops, and you’ll need a prescription to get them.
The most commonly prescribed options fall into two categories. Fluoroquinolone drops, such as ciprofloxacin 0.3% and ofloxacin 0.3%, are broad-spectrum antibiotics that work against a wide range of bacteria. Erythromycin 0.5% ointment is another standard choice, particularly for young children, because the ointment format is easier to apply than drops. Your doctor will choose based on your age, the severity of the infection, and any drug sensitivities you have.
Most people notice improvement within a day or two of starting antibiotic drops, but it’s important to finish the full course even after symptoms fade. Stopping early can let the infection bounce back. Mild bacterial pink eye can sometimes resolve without treatment, but antibiotics shorten the illness, reduce the risk of spreading it to others, and lower the chance of complications.
Viral Pink Eye: Artificial Tears for Comfort
Viral pink eye is the most common type overall, often showing up alongside a cold or upper respiratory infection. It tends to produce watery (not thick) discharge and affects both eyes. There’s no antiviral eye drop for routine cases. The infection has to run its course, which typically takes one to three weeks.
What you can do in the meantime is manage the discomfort. The Mayo Clinic recommends over-the-counter artificial tears to relieve the dryness and irritation. Cold compresses applied to closed eyelids for a few minutes at a time also help with inflammation. Look for lubricating drops labeled “artificial tears” rather than anything marketed as a redness reliever (more on that below). Popular brands include Refresh Tears, Systane, and TheraTears, all available without a prescription.
Allergic Pink Eye: Antihistamine Drops
If your pink eye comes with intense itching, occurs in both eyes at the same time, and flares up during pollen season or around pets, allergies are the likely cause. This type responds well to over-the-counter antihistamine eye drops that block the chemical reaction driving the itch and swelling.
Two active ingredients dominate the OTC shelf:
- Ketotifen (sold as Zaditor and Alaway): one drop every 8 to 12 hours. It works as both an antihistamine and a mast cell stabilizer, meaning it blocks the allergic response at two different points. This is one of the most widely recommended first-line options.
- Olopatadine (sold as Pataday): available in a once-daily formulation, making it especially convenient. Higher-strength versions like Pazeo require a prescription, but the standard Pataday 0.2% is available over the counter.
These drops work best when used consistently during allergy season rather than only after symptoms flare. If OTC options aren’t enough, a doctor can prescribe stronger formulations or add a short course of anti-inflammatory drops.
Avoid Redness-Reliever Drops
It’s tempting to grab a bottle that promises to “get the red out,” but redness-relieving eye drops are a poor choice for pink eye. These products contain decongestants that temporarily shrink blood vessels in the eye. When the effect wears off, your eyes can rebound and become even redder than before. This cycle can worsen over time, leading to persistent redness that’s harder to treat than the original problem.
The American Academy of Ophthalmology advises against using decongestant eye drops for more than 72 hours for this reason. People with narrow-angle glaucoma should avoid them entirely, as these drops can trigger a serious medical emergency called angle-closure glaucoma. Stick to artificial tears for general comfort and antihistamine drops for allergic symptoms.
How to Apply Drops Without Spreading Infection
Pink eye, especially the bacterial and viral types, spreads easily. How you handle your eye drops matters as much as which ones you use. The FDA recommends washing your hands with soap and water before every application and never letting the tip of the dropper bottle touch your eye, your hands, your clothing, or any other surface. A single contact can contaminate the bottle and reintroduce bacteria or viruses with every subsequent drop.
If only one eye is infected, be careful not to cross-contaminate. Tilt your head so the drops don’t run from the infected eye to the other. Some doctors recommend using a separate bottle for each eye if both are affected at different stages. After applying drops, wash your hands again before touching anything else.
Contact Lenses and Pink Eye
If you wear contacts, take them out at the first sign of pink eye and switch to glasses until the infection and all irritation have completely resolved. Contact lenses trap bacteria and viruses against the surface of your eye, which can slow healing and make symptoms worse. Any lenses you were wearing when symptoms started should be thrown away, along with the case.
Don’t restart contacts based on a calendar. Wait until your eyes feel fully normal, with no redness, discharge, or discomfort. If you were prescribed medicated drops or ointment, ask your prescriber when it’s safe to switch back, since some medications need to be finished before lenses go back in.
When Drops Aren’t Enough
Most pink eye resolves with the approaches above, but certain symptoms signal something more serious than standard conjunctivitis. Seek urgent care if you experience eye pain (not just irritation), blurred vision that doesn’t clear with blinking, intense light sensitivity, or a persistent feeling that something is stuck in your eye. These can indicate conditions like a corneal ulcer or uveitis that require more aggressive treatment than eye drops alone.
Newborns with any eye redness or discharge need immediate medical attention, as neonatal conjunctivitis can cause permanent damage without prompt treatment. The same urgency applies to anyone with a weakened immune system or who recently had eye surgery.