How long is my eyeglass prescription valid?

When a visual impairment is detected after an eye test, the ophthalmologist writes a medical prescription.
This specific document is required to get your pair of eyeglasses from your optician.
However, it should be noted that an ophthalmic prescription has a period of validity.

Why does an optical prescription have an expiry date?

To obtain a prescription for eyeglasses, a full eye examination by an ophthalmologist is required.
This test will determine your precise visual acuity and thus define your needs.
The results of the visual examination are noted in a specific numerical way in the prescription.
The optician needs all this information to make the lenses for your eyeglasses as suitable as possible.
All these data make it possible to identify the visual impairment you suffer from and the exact correction you need.
However, as we age and according to our behaviour, our eyesight is constantly evolving and can therefore undergo significant changes.
This is why the optical prescription must be changed regularly.

How long do eyeglass prescriptions last?

To check on the evolution of your eyesight, eye specialists recommend an examination every two years.
Consequently, a prescription for glasses is only valid during these two years during which the view is usually unaltered.
The eyeglass prescription will have to be renewed at that deadline by carrying out a new eye test.
The date of expiration or need for a new visual test is specifically noted in the document.
It should be noted that the eye doctor may sometimes request a renewal of the prescription every year.
This is usually the case for ageing people with potentially more quickly changing vision.

Why do I need a valid eyeglass prescription?

During the two-year period of validity of the prescription, it is possible to obtain a new pair of spectacles or to have the old pair renewed.
According to the law, an optician cannot issue a pair of spectacles without this document valid.
If the professional notices that your prescription has expired, they cannot make your pair and will ask you to take an eye test.
As a matter of fact, the optician needs to have the most up-to-date data on your visual acuity in order to make suitable lenses.
A wrong correction can indeed lead to poor eyesight, headaches or dizziness.
Besides, even if the prescription is still valid, a new one can be written if an eye test has detected a change in vision.
In addition to this, a valid prescription for eyeglasses is also required to apply for partial financial coverage of your visual device.
As a matter of fact, without this valid document, no optical fees can be reimbursed.