Eye drops in multi-dose packaging contain preservatives to ensure the sealed product remains sterile. After opening however, the preservative can only ensure the drops are safe for the eye for a period of 28 days. Beyond 28 days, using the drops may cause serious damage to the eye as bacteria may have been introduced.
Can I use eye drops after 1 month opening?
Most eye drops are stored in a cool dry place and should not be used longer than one month after the bottle is opened, unless otherwise stated on the label.
Is it OK to use eye drops after 28 days?
Eye Drops – The 28 Day Rule
After this, using the drops can cause serious damage to the eye as bacteria may have been introduced. The ingredients themselves will also not be as effective and could be dangerous. Always record the date eye drops are opened and do not use them after 28 days.
Can I use eye drops after 4 weeks?
Preservative free solutions have been found to be more likely contaminated than the preservative containing eye drops.  Instructions on eye drop containers usually advise to discard the multi-use eye drops after 4 weeks of opening.
What happens if you use old eye drops?
Using drops past their listed expiration date can lead to irritation, inflammation, and even an eye infection. The chemical compound of eye drops may change and lose potency over time. It is important to discard drops at the proper date to ensure no further usage and keep your eyes safe.
What happens if you don’t refrigerate eye drops?
Why some eye drops need to be refrigerated? Evidence suggests that some ophthalmic medications, such as certain glaucoma medications, may degrade or breakdown if they get too warm or are kept too long at room temperature.
Can eye drops expire?
Although unopened eye drops can go bad after their expiration date, opened ones have most likely been exposed to bacteria. In either case, ophthalmologists always recommend patients to dispose of eye meds that have reached their shelf life.
How do you know if eye drops are contaminated?
Placing more than one drop is a waste of the solution; the total capacity of the cul-de-sac is one-sixth of a drop. Avoid touching the dropper to touch the conjunctiva, eyeball, eyelid, or eyelashes. If contact is made, the bottle is considered contaminated and should be thrown away.
How long should you wait between eye drops?
SPACE OUT YOUR DROPS – when you are taking multiple drops, wait 5-10 minutes between each medication. Otherwise, you will just be rinsing the first drop out with the second drop and you will reduce the effectiveness of your medications.