Get Updated Prescription After Contact Lens Prescription Expire
Nowadays, a lot of people spend a significant amount of time wearing contact lenses due to the convenience of contact lenses. When it comes to the contact lens prescription, some people still use their expired contact lenses prescription while purchasing new contact lenses. It is reported that the contact lens prescriptions are valid for one year according to a law passed in 2004. This is because you should have an annual eye exam to make sure your eyes are remaining healthy and your refractive error is unchanged. Therefore, it is crucial to make an appointment with your optometrist after your contact lenses prescription has expired.
In fact, contact lenses are a foreign body in our eyes. A contact lens lies in the top of the cornea and is close to the inner tissue of the eyes. If contact lenses are not prescribed properly, you can’t see clearly. What’s worse, contact lenses with improper prescription may lead to many eye problems such as discomfort, inflammation, swelling and abrasion, etc.
Experts declare that improper contact lenses will give rise to lactic acid build-up within the cornea and then cause swelling. The cells in the cornea will spread apart as long as swelling occurs. If so, it is easier for bacteria and viruses to have access to other spaces in the cornea, which may result in infection. Beside, your eyes may become lack of f oxygen when you wear improper contacts. Due to the oxygen deprivation, new blood steaks are likely to grow into the cornea.
Generally speaking, you must pay much attention to make sure whether your prescription is accurate or not. If your contact lens prescription expires, you shouldn’t buy new lenses until you get an updated prescription. You’d better have a checkup by your eye care professional (ECP) to get the accurate contact lens prescription.
For more eye care information please refer to firmoo vision library.
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