Frequently Asked Questions


Can I pay using my insurance? currently does not accept insurance, however some insurance companies may reimburse you for your prescription glasses or contact lenses. If you qualify for reimbursement, contact us at and we will send you a copy of your invoice. We do accept payments with FSA and/or HSA credit cards.

How do I read my prescription? 

Optical prescriptions are typically written in two horizontal rows: the top row being OD (right eye) and the bottom being OS (left eye). Each of these rows will have sphere (SPH), cylinder (CYL) and axis measurements. Sphere corrects for nearsightedness or farsightedness (-/+). Cylinder and axis correct for astigmatism. Some prescriptions might have an "ADD" measurement which corrects for the reading power in a bifocal or progressive lens, so if you have an ADD measurement make sure you choose "Progressive" under "Prescription Type" when placing your order.

How do I measure my Pupillary Distance (PD)? 

You can call your doctor and ask if they have your PD on file, if they don’t, don’t worry! You can measure your PD yourself.

1. Stand 8in away from a mirror. With your face straight forward, place a ruler against your brow line.
2. Close your right eye and align the ruler's zero with your left pupil.
3. Looking straight ahead, open your right eye and close your left.
4. Read the millimeter line that lines up with the center of your right pupil. That number is your PD.
5. A binocular PD is the distance between your pupils. The number for a binocular PD will be higher than a monocular PD.
6. A monocular PD is the distance between the center of your pupil and the bridge of your nose. Your monocular PD will consist of two numbers (one for each eye), which may or may not be the same. 

“Am I doing this right?”: Your binocular PD should fall between 55-75mm. Your monocular PD should fall between 15 and 40mm. If your numbers aren't in that range, you may not be measuring correctly. Measure a few times for quality assurance. 

Is my eyeglasses prescription and my contact lens prescription the same thing? 

Nope! Glasses sit slightly away from your eyes while contact lenses sit directly on top of them, meaning they require two different sets of measurements. Only purchase glasses with a glasses RX, and only purchase contacts with a contact lens RX. 

What is the difference between single vision and progressive lenses? 

A single vision lens is just that- it corrects your vision at a single distance. For example, if you have trouble seeing far away but can see at all other distances clearly, you only need vision correction at a single distance. For folks who have trouble seeing at multiple distances, say, reading things close up AND seeing things far away- progressive lenses have different vision corrective powers in different parts of the lens. You can look up and clearly see into the distance, or you can shift your gaze downward to read the newspaper (or your phone…) seamlessly.

Can I order new lenses for any frame? 

Absolutely! We have a lens replacement tab which allows you to send your frame to us, at any London Drugs Optical Location, or mail to Optical London Drugs ,22709 Lougheed Hwy. Suite 101, Maple Ridge, BC V2X 2V5,  after submitting it on the site. We will then shape the new lenses, pop them into your favorite frame and ship your glasses back to you. We are not responsible for mail loss or frame breakages.

Do I have to put my new lenses in myself?  

Nope! We'll send you your glasses back with the new lenses inside. 

How long will shipping take? 

For glasses/lenses: about two weeks. All lenses are made-to-order, so once you place your order, we’ll get your lenses in the works. That can take up to one week. Once they’re ready, we’ll ship them to you which will take about a week depending on where you live. For contacts: 7-10 business days 

What kind of lenses should I get? 

A great question! You can read our blog about the lenses we offer to decide what’s best for you. 

My frames don’t fit me correctly. Can they be adjusted? 

We are able to provide free adjustments at any Optical London Drugs location in Canada. We are constantly seeking new vendors to help with adjustments. You can also visit any optical in your area and ask them to help adjust the frame.

Can I return my glasses? has a 100% satisfaction guarantee. Click here to read about our return and exchange policy. 


Have more questions? We’re here to help! Send us an email at and we’ll get back to you ASAP.