Fit matters: improper size can lead to discomfort, slippage, and even dizziness. Follow our simple guide to ensure your glasses fit perfectly.

（2）Frame Numbers Explained — What Does "52‑18‑140" Mean?

Look for a sequence like Lens‑Bridge‑Temple on the inside arm of your glasses:

• Lens Width (e.g. 52 mm): the width of each lens.
• Bridge Width (e.g. 18 mm): distance across the nose bridge.
• Temple Length (e.g. 140 mm): the arm length from hinge to behind ear.

These three numbers indicate your frame size and help you find a similar fit in ODINNA’s collection.

（3）Already have glasses? Use them as reference!

Check the inside of your temple arm for numbers like 52‑18‑140.

• Match these values to ODINNA product pages (each includes frame dimensions).
• If your current glasses fit well, choose the ODINNA frame with the same or very close measurements.

（4）Don’t have existing glasses? Measure your face using this simple method:

✅ How to Measure Your Face:

• Temple to Temple Width: Measure across your face from one temple to the other.
• Bridge Width Estimation: Note where your nose bridge begins — if it’s low or narrow, choose a smaller bridge size; if it’s higher or broader, go larger.

Lens Width Calculation:

(Temple‑to‑temple width − bridge width) ÷ 2 = Lens width

🪪 Credit Card Method:

Hold a standard credit card under one eye, with the straight edge aligned vertically to the center of your nose:

• If it extends past the eye’s outer edge → you likely need Small size.
• If it aligns within the eye → Medium
• If it doesn’t reach the outer edge → Large

（5）ODINNA Size Recommendation Table

Your Measurement / Existing FrameRecommended ODINNA SizeLens‑Bridge‑Temple ExampleLens ~50 mm / Bridge ~18 mm / Temple ~140 mmMedium50‑18‑140 (e.g. Tammie Frame)Lens 52–54 mm / Bridge 17–19 mm / Temple 140–145 mmMedium‑large52‑18‑145 (e.g. Migdalia)Lens 46–49 mm / Bridge 16–18 mm / Temple 135 mmSmall48‑17‑135Lens 55+ mm / Bridge 19–21 mm / Temple 145–150 mmLarge56‑19‑150For low‑bridge nose types, select frames with Asian‑fit variants or bridge ≤ 18 mm.

（6）Visual Step-by-Step Measurement Guide

• Illustration A: Identify the inside temple code (Lens‑Bridge‑Temple).
• Illustration B: Measure temple-to-temple width.
• Illustration C: Use credit card method under eye to guess size.
• Illustration D: Compare with ODINNA frame specs and pick the ideal model.

Visual aids help reduce mistakes and reduce order returns.

（7）Need help? We’re here for you.

Not sure about your PD (Pupillary Distance) or face/frame size?

• Upload your prescription and PD during checkout.
• Our team will manually review your measurements before production.
• Contact us via live chat or email for size consultation — we're happy to assist.

（8）CTA – Shop by Size

Explore frames that fit your size:

• Shop Small Frames (Lens 46‑49 mm)
• Shop Medium Frames (Lens 50‑54 mm)
• Shop Large Frames (Lens 55‑60 mm)

（9）Why Size Matters: Prevent Discomfort & Dizziness

Wearing incorrectly sized frames can lead to:

• Misaligned optical center → eye strain or dizziness
• Slipping frames → headaches or temple discomfort
• Pressed-in temples → ear & side-of-head pain

By using our size guide, you ensure the best vision and comfort from day one.