Why do you have to change your contacts every month?

Why do you have to change your contacts every month?

Contact lenses are also plastic. They also have pores in them so your eyes can breathe. Contacts need to be replaced at different times depending on their material which is why some contacts you use for a day, others for two weeks and others still for a month.

What happens when you don’t change your contacts regularly?

Your eyeballs need oxygen, and when you don’t change your contacts regularly, you are literally suffocating them. So what happens? Well, your corneas can swell, which can lead to a “corneal abrasion,” i.e. a scratched cornea. This means pain and light sensitivity, in addition to a temporary “no contacts” rule.

How often do you need to replace contact lenses?

A disposable pair is intended for at least bi-weekly disposal. Lenses for frequent replacement need to be changed every 1-3 months. You can switch traditional reusable contact lenses around twice yearly, or every 6 months.

What happens if you wear daily contacts more than once?

What happens if you reuse your daily contacts? Wearing daily disposable contact lenses more than once puts you at risk for discomfort, dryness and serious eye infections. One study found contamination on the lenses of 95 percent of users who stored daily disposable lenses in saline overnight.

What happens if you wear your contacts for more than a month?

Over time, this reduces the amount of oxygen that gets through to your eyes. This can make them more prone to infections, blood vessel growth into the eye, and chronic inflammation and redness that can lead to vision loss and contact lens intolerance.

Why do contacts expire?

Over time, the seal of contact lenses can lose their effectiveness and deteriorate, which can lead to contamination of the solution and the lenses inside. For that reason, all packaged contact lenses will have a printed expiration date. Usually, the expiration date is ~4 years from the date of packaging.