Yes, contact lenses expire.
The expiry date on the box or blister pack tells you how long the sealed lens is expected to stay sterile, stable, and safe to wear. Once that date passes, the lens should not go in your eye, even if the package looks untouched.
Contact lenses sit directly on the surface of your eye, so expiry dates deserve more attention than the date on an old bottle of shampoo or makeup. The lens material, packaging seal, and sterile solution inside the pack all need to stay in good condition. If one part is no longer reliable, the lens can put your eye at risk.
There’s also a second timeline to watch. Contact lenses have a printed expiry date before opening, but they also have a replacement schedule after you start wearing them. A daily lens, a two-week lens, a monthly lens, and an extended-wear lens all follow different rules.
Where Can You Find the Expiry Date?
You can find the expiry date on the contact lens box and on the individual blister pack.
How to locate it
Why Do Unopened Contact Lenses Expire?
Unopened contact lenses expire because the sealed package is not meant to protect the lens forever. The blister pack holds the lens in sterile solution, and that package has to keep germs out while keeping the lens hydrated and stable.
Over time, the packaging seal can weaken, the solution can become less reliable, and the lens itself can change. You might not see a problem with your eyes, but that doesn’t mean the lens is safe. That’s why an unopened expired contact lens is still expired.
Can You Wear Expired Contact Lenses?
No — do not wear expired contact lenses.
Expired lenses can raise the risk of eye irritation, infection, redness, discomfort, and blurry vision. Even a few hours of wear is not worth the risk. If you find expired contacts in your drawer, discard them and order a fresh supply that matches your current prescription.
How Long Do Contact Lenses Last After Opening?
The printed expiry date applies to unopened lenses. Once you open a lens and start wearing it, the replacement schedule takes over.
Replacement schedule by lens type
Comfort can be misleading. A lens can feel fine while deposits or reduced surface quality make it less safe. Follow the schedule rather than stretching lenses to save money.
Do Contact Lens Prescriptions Expire Too?
Yes, your contact lens prescription can expire before your unopened boxes do. That means the lenses might still be within the printed expiry date, but your prescription might no longer reflect your current eye health, lens fit, or vision needs.
What Happens If You Wear Contacts Past the Replacement Schedule?
Wearing contacts past the replacement schedule can lead to dryness, irritation, blurred vision, and a higher risk of infection. Reusable lenses collect deposits from tears, solution, and the environment over time. Cleaning helps, but it does not make a lens last forever.
Monthly or two-week lenses also have limits. Wearing a monthly lens for six weeks or a two-week lens for a month is not getting extra value — it can make the lens less comfortable and less safe.
Does Contact Lens Solution Expire?
Yes, contact lens solution expires too. Check the expiry date on the bottle before using it, and follow the discard timeline printed on the label after opening.
Never use these to rinse or store contacts:
- Tap water
- Saliva
- Homemade mixtures
Water can carry microorganisms that are dangerous for contact lens wearers. Your lens case also needs regular cleaning, air drying, and replacement.
What Should You Do If You Accidentally Wore Expired Contacts?
If you wore expired contacts and your eyes feel normal, remove the lenses and switch to glasses for the rest of the day. Do not put the same lenses back in.
See an eye care professional right away if you notice:
- Redness or pain
- Light sensitivity
- Watering or discharge
- Swelling or blurry vision
Eye infections can move quickly. It’s better to get checked early than wait to see if symptoms improve.
How Can You Avoid Expired Contact Lenses?
Store boxes in a cool, dry place away from direct heat and bathroom humidity. Keep older boxes at the front so you use them first. Before travel, check your spare lenses. Before reordering, check your prescription date. Before opening a blister pack, check the foil.
If you wear contacts every day, ordering on a routine can also help. VisionPros.ca makes it easy to shop contact lenses online in Canada, compare options, and reorder before your last pair runs out.
References
- Contact lens care tips for patients: an optometrist’s perspective. Clinical Optometry. pmc.ncbi.nlm.nih.gov. Published August 11, 2017. Accessed June 8, 2026.
- Contact Lens Solutions and Products. U.S. Food and Drug Administration. fda.gov. Published January 16, 2018. Accessed June 8, 2026.
- Contact Lenses. Health Canada. canada.ca. Published July 19, 2021. Accessed June 8, 2026.
- Contact Lenses. U.S. Food and Drug Administration. fda.gov. Published October 28, 2019. Accessed June 8, 2026.
- Investigating the shelf life of disposable soft contact lenses. African Vision and Eye Health. avehjournal.org. Published December 17, 2008. Accessed June 8, 2026.
- Preventing Eye Infections When Wearing Contacts. Centers for Disease Control and Prevention. cdc.gov. Published May 27, 2025. Accessed June 8, 2026.
- Valid Optical Prescription. Canadian Association of Optometrists. opto.ca. Published May 18, 2016. Accessed June 8, 2026.
- Wear and Care for Contact Lenses. Canadian Association of Optometrists. opto.ca. Updated March 18, 2023. Accessed June 8, 2026.
