Using expired eye drops can mean less relief, more irritation, and a higher risk of contamination or infection. Fresh, unopened drops past their date may simply be less effective, but opened bottles are more concerning because preservatives can weaken and germs can grow over time.

Quick Scoop

Expired eye drops may:

  • Work poorly or not at all, so your eye problem can linger or worsen.
  • Cause irritation, redness, burning, or blurry vision.
  • Carry a contamination risk, especially after opening, which can lead to eye infections such as conjunctivitis or keratitis.

What to do

  • Do not use eye drops that are past their expiration date, especially if the bottle was opened.
  • Throw them out and replace them with a new bottle.
  • If you already used some and now have pain, worsening redness, discharge, or vision changes, get medical care promptly because those can be signs of infection or another eye problem.

Safer habit

A simple rule: if the drops are expired, cloudy, discolored, or the tip touched your eye or anything else, it is safer to discard them. For eye medications that treat dry eye, allergy, glaucoma, or infection, using an old bottle can mean the condition is undertreated while the risk of contamination goes up.