Can you wear expired contact lenses
Can you wear expired contact lenses? In real life, many women who love beauty will wear contact lenses, because it can make the eyes more beautiful, but many people want to know contact lenses expired can be worn? Here's the answer!
Can you wear contact lenses when they are expired1
Can you wear contact lenses when they are expired
Contact lenses are expired, so it is not recommended to wear them at this time. The materials used in contact lenses change and can produce harmful substances, and wearing them can damage the cornea and retina. Usually, contact lenses have expired and the materials have changed. They are susceptible to a large number of bacterial infections and protein deposits can build up, making it difficult to clean them thoroughly. Don't continue to wear expired contact lenses to save money, but take care of them as well.
Can you wear contact lenses that are expired and unopened
You cannot wear them. Contact lenses are classified as Class III medical devices, the category with the highest risk, so never wear expired products. Upon expiration, contact lenses will have less water locking power, which will increase friction between the eye and the contact area. Over time, this will lead to a range of corneal disorders, dangerously possibly leading to blindness. In addition, contact lenses themselves are foreign objects that can become infected and cause eye disease if you are not careful when they enter the eye.
What is the typical shelf life of contact lenses
Unopened contact lenses have a shelf life of about three to five years. When opened, the shelf life begins on the date of opening. Contact lenses also have a use cycle, which is the shelf life of a contact lens. For example, daily disposable contact lenses mean you have to use them for one day and then discard them, while monthly disposable contact lenses have a shelf life of one month. Even if you've only used them a couple of times, it's recommended that you don't continue to use them.
Can You Wear Contact Lenses When They're Expired2Reasons for Contact Lens Expiration Dates
Before contact lenses can be packaged, they have to be sterilized immediately after manufacturing. So, when you receive your lenses, they are sterile' and uncontaminated. You may have noticed that the packaging that comes with your lenses has an impermeable seal that ensures that your lenses are safe to use. However, over time, the seal on the package may become compromised, allowing air to enter the package, which could lead to contamination of the lenses and solution.
Never wear expired lenses
You should never wear expired contact lenses for many reasons. If the seal is damaged, bacteria or fungus may have started to grow on the lenses due to air leaking into the packaging. This can be very dangerous to your eyes. There is also a risk that the solution the lenses are stored in could become more alkaline or acidic, which can make wearing the lenses uncomfortable and could lead to eye infections.
Finding out when your lenses expire
The expiration date (usually shown in "mm / yyyyy" format) is usually on the outside of the product packaging. Contact lenses are usually effective for about 3-4 years after manufacture, so be sure to check the date at the time of purchase. It is also a good idea to always be cautious and check the date before wearing new contact lenses.