Dear friends:

Have you ever subconsciously grabbed a pair of contact lenses, put them on in a hurry, and suddenly realized that they have been lying in the drawer for a whole year?

 Have you convinced yourself to continue using lenses that have long exceeded their shelf life because you “don’t feel any discomfort for the time being”?

 Have you ever thought that this seemingly small decision may be destroying your eyes in an irreversible way?

This is not alarmist.

01｜Do contact lenses really “expire”? The cruel truth confirmed by science

Contact lenses are not red wine – they will not become “mellower” as time settles.

 Material aging: Lens polymers will gradually degrade over time and environment (temperature, humidity, contact with care solution ingredients). Just like a rubber band loses its elasticity, the oxygen permeability of expired lenses may drop by up to 37% (Journal of Optometry, 2021), leaving your cornea struggling in suffocation.

 Bacteria breeding ground: Even if stored in an unopened solution, the effectiveness of preservatives will drop off a cliff after 18 months. A laboratory test found that the number of colonies on the surface of monthly lenses that have expired for half a year exceeded the standard by 140 times – equivalent to flushing your eyes with toilet water.

 Deformation crisis: The curvature of the lens will change subtly due to long-term storage. When it no longer fits perfectly with your cornea, every blink creates tiny scratches. And your nerve endings don’t even have time to issue a pain warning.

02｜”Chronic murder” of expired lenses: What are your eyes experiencing?

 Week 1: Slight dryness, you blame it on air conditioning or lack of sleep

 Month 1: Red bloodshot stubbornly occupies the white of the eye, you increase the amount of artificial tears

 Month 3: Blurred vision at night, street lights begin to emit strange halos when driving

 One day: In the emergency room, the doctor pointed to the angiography of corneal ulcers and said: “Two days later, a transplant may be needed”

This is not a fictional horror story – but a common case scenario counted by the London Eye Center in 2023.

03｜Why are smart people implementing the “3D Rule”?

DISCARD (discard decisively)

Daily disposable lenses should never stay in the eyes for more than 12 hours

Monthly disposable lenses should be put into the trash can on time at 23:59 on the 30th day

Yearly Annual disposable lenses are a hothouse for bacteria if used improperly during this period

04｜At this moment, please do a simple test

Take out the packaging box of your current contact lenses

Find the date printed with the word “EXP” (usually on the edge or bottom)

If this date is earlier than today——

You are using 20th century weapons to fight the visual war of the 21st century

But the number that makes us most proud is:

“0″——In the past five years, there have been zero customer complaints caused by expired lenses

Final warning:

Your contact lenses will not scream to tell you that they are expired.

But your eyes will eventually pay the price in the quiet of the night.

DEMAND (strict selection)

Real safety comes from obsession with details:

✅ Silicone hydrogel material with oxygen permeability (Dk/t) > 90

✅ Production line with multiple FDA/CE/ISO certifications

✅ Independently sealed packaging to eliminate the risk of storage contamination

——This is the bottom line for each of our contact lenses before they leave the factory