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How Long Is an Eye Prescription Good For?

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Flat lay image of a pair of glasses next to a piece of paper with an eye prescription on it

Your vision needs can change over time, and your prescription is a key part of your overall eye health. That’s why it’s a good idea to know how long your prescription is good for.

In Canada, most prescriptions for eyeglasses are valid for one to two years. This timeline helps you stay on top of any changes in your vision. It also serves as a reminder to check in on the health of your eyes.

Why Prescriptions Expire & Why It Matters

Your eye prescription has an expiry date for a good reason—it’s a prompt to check in on your eye health. Over time, your vision naturally changes. An updated prescription helps you see your world with the best possible clarity.

More Than Just Clear Vision

A regular comprehensive eye exam does more than just test your sight. It’s a key part of your overall wellness routine. This check-up allows your optometrist to check the health of your eyes and spot potential issues early on.

The Problem with an Outdated Prescription

Using an old prescription might seem harmless, but it can lead to uncomfortable side effects. You might experience:

  • Blurry vision
  • Eye strain
  • Headaches
  • Double vision

The Standard Prescription Timeline in Canada

As mentioned, most eye prescriptions in Canada are valid for one to two years. This timeline ensures your glasses or contacts are always suited to your current vision needs. Children often need more frequent updates, as their eyes develop and change.

How to Find Your Prescription’s Expiry Date

The expiration date is typically printed directly on your prescription copy. If you can’t find it, don’t worry. The clinic where you had your exam can provide you with a copy and confirm the date.

What to Do with an Expired Prescription

You can’t purchase new glasses or contact lenses with an expired prescription. However, this is the perfect opportunity to get an accurate, up-to-date assessment from optometrists in Edmonton North.

Can an Optometrist Refuse to Give You Your Prescription?

After your eye exam is complete, you are entitled to a copy of your prescription at no extra charge. This allows you to purchase eyewear from the dispenser of your choice.

An optician putting a pair of glasses on a persons face

Factors That Change Your Prescription Needs

Several factors can influence how often your prescription needs an update. 

Age & Life Stages

Children’s vision can change quickly as they grow, often requiring yearly exams. For many adults, vision remains more stable. However, gradual changes still happen, especially as you approach your 40s.

Health & Lifestyle

Your daily habits—like how much time you spend on digital screens—can impact your eyes. Certain health conditions can also affect your vision. Regular check-ups are an important part of managing your health.

Contacts vs. Glasses Prescriptions

Contact lens prescriptions sometimes have a shorter validity period, often about a year. Because contacts sit directly on your eyes, a more frequent check-in is needed. A proper contact lens exam and fitting ensures we can monitor your eye health and fit.

Visit Our Optical in Edmonton

Don’t think of an expired prescription as a chore, but as a chance to refresh your style. A new pair of glasses can update your entire look. 

At Castledowns Vision Centre, we offer a curated collection of designer frames that fit your look and your budget, and we’re here to help you find your perfect match.

Written by Castledowns Vision Centre

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