Calgary Optical Lab: What’s the process for remaking lenses if they don’t meet the original prescription, and what are the associated costs?

Let’s be honest: even with the most precise eye exam and diligent ordering, sometimes lenses just don’t feel right. Maybe the prescription wasn't quite right for you, or there was an error in the manufacturing process. It happens. As someone who’s spent years in an optical lab, I want to walk you through exactly what happens when a lens remake is needed, what quality control looks like on our end, and how costs are handled. Knowing this process can save you time, frustration, and potentially money.

What Causes a Lens Remake?

There are a few common reasons why lenses might need to be remade. It’s rarely a simple “wrong number” situation. Here’s a breakdown:

1. Prescription Changes: Sometimes, even shortly after an exam, your vision subtly changes. This is especially true with progressive lenses, where getting the fit just right takes fine-tuning.
2. Manufacturing Defects: Though rare with modern digital surfacing, imperfections can occur during the grinding and polishing process. These can include unwanted astigmatism, prism, or simply an inaccurate curve.
3. Centration Errors: This is where the optical center of the lens isn't aligned correctly with your pupil. It’s critical for clear vision, particularly with progressive lenses, and can cause distortion or headaches. Proper measurements taken by your eye care professional are key here.
4. Frame Issues: If your frames are significantly warped or have an unusual shape, it can impact how the lenses sit and function. Replacing lenses in vintage or rare frames, while absolutely possible, requires extra care and expertise.

It’s important to understand that not all discomfort means a remake is necessary. Allow a few days – up to a week – for your eyes and brain to adapt to new lenses, especially progressive lenses. However, if you’re experiencing persistent headaches, eye strain, distortion, or blurry vision that isn’t improving, it’s time to investigate.

Our Quality Control Process: What We Do Before You Even Receive Your Lenses

A good optical lab doesn’t just ship lenses out the door. Rigorous quality control is essential. Here’s what we do at each stage:

1. Prescription Verification: We double-check the prescription information received from your eye care professional to ensure it's complete and legible.
2. Lens Measurement: Before surfacing, we verify the lens power and cylinder/axis with specialized instruments.
3. Surface Inspection: After the lenses are surfaced (ground), they undergo a thorough inspection for any cosmetic defects or grinding errors. We look for scratches, chips, and inconsistencies in the curve.
4. Optical Center Verification: We precisely locate and mark the optical center to ensure correct alignment during mounting.
5. Final Inspection: Before coating and shipping, a final visual inspection is performed to catch any remaining imperfections.

Even with these checks, issues can still arise, which is why a clear remake policy is vital.

What About Complex Lens Designs?

Digital surfacing, and lenses like progressive and Peritus lenses, require even more scrutiny. These designs have complex curves and multiple power zones. Our quality control includes verifying the accuracy of these zones and ensuring smooth transitions between them. A slight error can cause significant visual discomfort.

The Lens Remake Procedure: What to Expect

If you’re experiencing issues with your new lenses, here’s the typical process:

1. Contact Your Eye Care Professional: This is the crucial first step. They need to assess the problem and rule out any issues with your eye exam or frame adjustment.
2. Re-Verification: Your eye care professional will send the prescription back to us for re-verification. We’ll confirm the original order details and re-check our records.
3. Lens Evaluation: We’ll often ask for the lenses to be returned to the lab for a thorough evaluation. This allows us to pinpoint the exact cause of the problem.
4. Remake Authorization: If a remake is deemed necessary, we’ll obtain authorization from your eye care professional (and potentially your insurance provider).
5. Lens Production: We’ll create a new set of lenses, paying extra attention to the identified issue.

The entire process typically takes 7-14 business days, depending on the complexity of the prescription and lens design. Digital surfacing, while precise, does add a few extra days to the turnaround time.

Cost Transparency: Who Pays for a Remake?

This is where things can get tricky. Here’s a general breakdown. Remember, Alberta Health Care only covers eye exams for children under 19 and adults 65+. Everyone else (ages 19-64) typically pays out of pocket, unless they have private vision insurance.

• Lab Error: If the remake is due to an error on our part (incorrect grinding, coating defect, etc.), we cover the cost of the new lenses and standard remounting.
• Prescription Change: If the remake is due to a change in your prescription, the cost typically falls on you or your insurance provider. This is considered a new prescription, not a defect.
• Frame Issues: If the issue is related to frame warping or an improper fit, the cost may be shared between you, your eye care professional (for frame adjustments), and potentially us if the frames are inherently difficult to work with.
• Standard Remounting: Often, remounting the new lenses into your existing frames is covered. However, if complex frame adjustments are needed, there may be an additional charge.

A typical single-vision lens remake (without frame adjustments) might cost between $80-$150, while a progressive lens remake could range from $150-$300 or more, depending on the lens design and coatings. It’s always best to get a clear estimate upfront.

Understanding Warranty Information

Most optical labs, including ours, offer a standard warranty on lenses. This typically covers defects in materials or workmanship for a period of one year from the date of purchase. However, warranties usually do not cover scratches, damage from improper cleaning, or changes in your prescription. It's important to carefully review the warranty details provided by your eye care professional or the lab.

Don’t hesitate to ask questions! A reputable lab will be transparent about their procedures, warranties, and costs. Understanding the process and what to expect can help you navigate any issues that may arise and ensure you’re getting the best possible vision.

Have questions about your lenses or a potential remake? Contact Us to discuss your specific situation.