2025-01-20
Yes, we are an optical shop, so you might expect this article to be a hit piece on online glasses. It is not going to be. Online eyewear retailers have genuinely changed the industry by making glasses more affordable. That is a good thing. But the conversation around online versus in-store buying tends to be oversimplified in both directions. Online sellers say you are overpaying in stores. Optical shops say online glasses are garbage. The truth is somewhere in between, and where exactly depends on your specific situation.
Here is an honest breakdown.
What Online Glasses Actually Cost
Online retailers like Zenni, EyeBuyDirect, Clearly, and Warby Parker offer complete glasses (frame plus single-vision lenses) starting at roughly $15-50 CAD. That is dramatically cheaper than in-store prices, and there is no pretending otherwise. Even with upgrades like anti-reflective coating and high-index lenses, online orders are typically 50-70% less expensive than comparable orders in a brick-and-mortar shop.
The reason is straightforward economics. Online retailers have lower overhead (no retail space, fewer staff per customer, centralized lab processing, direct-to-consumer supply chain) and they pass most of those savings on. This is not a secret or a trick. It is a legitimate business model advantage.
What You Actually Get When You Buy Online
Frame and lenses at a low price
This is the clear win. For simple prescriptions and standard frames, the product itself is often perfectly adequate. Online labs use the same lens materials and coatings from the same major manufacturers (Essilor, Hoya, etc.) as physical stores, just sometimes under different branding. A CR-39 lens with a basic anti-reflective coating is a CR-39 lens with a basic anti-reflective coating, whether it comes from an online lab or a local one.
Virtual try-on and home try-on
As we covered in our article on virtual try-on, the technology is useful for style exploration. Some retailers like Warby Parker also ship you frames to try on at home before buying. These programs genuinely help with the "I cannot try before I buy" problem, though they do not replace proper fitting.
Easy reordering
Once you find a frame that works, reordering the same thing with updated lenses is trivially easy online. This is a real convenience advantage for people with stable preferences.
What You Do Not Get When You Buy Online
Professional fitting
This is the single biggest difference and it matters more than most people realize.
When you buy glasses in a shop, an optician measures your pupillary distance (PD) with a pupilometer, determines the optical centre height for your chosen frame, assesses how the frame sits on your face, and adjusts the temples, nose pads, and frame curvature to your specific facial geometry. This fitting process ensures that the optical centres of your lenses align with your pupils, which is critical for visual comfort and clarity.
When you buy online, you typically provide a PD that you have either measured yourself or extracted from your prescription. Some online tools help you measure PD through your phone camera. These self-measurements are usually in the right ballpark but have a wider margin of error than professional measurement.
For single-vision lenses with mild prescriptions (say, up to +/-3.00 with minimal astigmatism), a small PD error is usually tolerable. You might not notice anything wrong. For stronger prescriptions, significant astigmatism, or progressive lenses, PD accuracy and optical centre height placement become much more critical. Get these wrong and the glasses cause headaches, eyestrain, or blurry zones.
Frame adjustment
Frames come off the assembly line in a generic shape. They are designed to fit an "average" face, but nobody has an average face. An optician adjusts the frame to your specific anatomy: bending the temple arms for the right angle behind your ears, adjusting nose pad spacing, tweaking the frame curve to follow your face's contours.
Online glasses arrive as-is. If the temples are too tight, too loose, sitting too high, or pressing behind one ear more than the other, you are on your own. Yes, some people take online glasses to a local shop for adjustment, and some shops will do this (sometimes for a fee, sometimes not). But the fitting and adjustment process is an ongoing service, not a one-time event. Glasses shift over months of daily wear and need periodic re-adjustment.
Lens verification
When glasses are made in-store or through a dispensary, the finished lenses are checked with a lensometer to verify the prescription matches what was ordered. Optical centres are verified against the fitting measurements. This quality control step catches errors before the glasses reach you.
Online retailers do their own quality control, but you have no way to verify the final product yourself unless you take the glasses to a shop with a lensometer. Most people just put them on and hope for the best. Minor lens errors (wrong axis by a few degrees, PD off by 2mm) might cause subtle discomfort that you attribute to "adjusting to new glasses" rather than recognizing as a manufacturing error.
Warranty and aftercare
Online retailers offer return policies (usually 30-90 days) and some offer warranty replacements. But the logistics of returning glasses by mail, waiting for a replacement, and being without glasses in the meantime is a hassle. A local shop can often fix issues same-day: tighten a loose screw, replace a nose pad, adjust the fit, swap a scratched lens.
When Buying Online Makes Sense
- Second or backup pair. You already have well-fitted glasses from a shop and want an inexpensive backup pair with the same prescription. You know your measurements work. Low risk.
- Simple, mild prescription. Single-vision, sphere only or mild cylinder, under +/-3.00. The margin for error in fitting is wider.
- Fashion or experimental pair. You want to try a bold colour or unusual style without investing hundreds. If it does not work out, you are out $30, not $300.
- You already know your measurements. You have been wearing glasses for years, you know your PD, you know what frame width works for you, and your prescription is stable.
- Budget is genuinely tight. If the choice is between affordable online glasses and no glasses at all, online wins easily. Vision correction should not be a luxury.
When Buying In-Store Makes Sense
- First pair ever. You have never worn glasses and have no baseline for what fits. Professional fitting is important for getting it right the first time.
- Progressive or bifocal lenses. These require precise optical centre height measurements and careful frame selection. The fitting corridor in a progressive is narrow. Getting this wrong results in uncomfortable glasses that are difficult to use. This is the category where we see the most online returns and disappointments.
- Strong prescriptions. Above +/-4.00 sphere or significant cylinder. Lens thickness, edge profiles, and optical accuracy all become more sensitive to measurement errors.
- Children. Kids' faces are still growing, and proper fit affects how they develop visual habits. Children also need adjustments frequently as they grow.
- Complex prescriptions. Prism, high astigmatism, post-surgical corrections, or unusual occupational requirements (like specific intermediate-distance optimization for musicians).
- You want ongoing service. Adjustments, repairs, replacement parts, and annual check-ups are part of the in-store value proposition.
The Hidden Costs of Online Buying
The sticker price is lower, but there are costs that are less obvious:
- Return shipping and restocking. Some retailers charge return shipping. If you go through two or three pairs before finding one that works, the savings shrink.
- Time without glasses. Shipping each way takes time. If a pair does not work and you need to return and reorder, you could be waiting weeks.
- Paying for adjustments elsewhere. If you take online glasses to a local shop for adjustment, some charge $25-50 for this service. Reasonable, since you did not buy from them.
- Buying the wrong thing. If you guess wrong on frame size or lens type, you either live with a sub-optimal pair or start over. In a shop, the optician steers you away from choices that will not work before you spend money.
Our Honest Position
We are not threatened by online retailers, and we do not pretend that every pair of glasses needs the full in-store experience. If you need a simple, inexpensive backup pair and you know your measurements, buying online is a perfectly reasonable choice. We are not going to lecture you about it.
What we do believe is that your primary pair, the glasses you depend on every day, benefits enormously from professional fitting. The difference between glasses that fit well and glasses that "sort of" fit is the difference between wearing them comfortably for 14 hours and getting a headache by noon. That difference is hard to quantify in a price comparison, but the people who have experienced both know exactly what we are talking about.
If you want the best of both worlds: get your eye exam and primary pair fitted professionally, then use your verified prescription and measurements to order supplementary pairs online. That way your daily pair is dialed in, and your extras are affordable. Come see us for the fitting part, and we promise not to guilt-trip you about where you buy your sunglasses.