1. What is the Trek Frame Size Calculator?

The Trek Frame Size Calculator helps determine the appropriate glasses frame size based on your face width measurement. Proper frame sizing ensures comfort, optimal vision, and aesthetic appeal.

2. How Does the Calculator Work?

The calculator uses the Trek frame size formula:

Where:

• \( Face Width \) — Measurement across your face at the widest point (mm)

Explanation: The frame size should match your face width to ensure proper fit and comfort.

3. Importance of Proper Frame Sizing

Details: Correct frame sizing is crucial for comfort, proper lens positioning, and preventing pressure points. Ill-fitting frames can cause headaches and visual discomfort.

4. Using the Calculator

Tips: Measure your face width in millimeters at the widest point (typically across the cheekbones). Enter this value to get your recommended frame size.

5. Frequently Asked Questions (FAQ)

Q1: How do I accurately measure my face width?
A: Use a flexible measuring tape across the widest part of your face, typically at the cheekbones, ensuring the tape is level and not too tight.

Q2: Are there other factors to consider when choosing frames?
A: Yes, consider bridge width, temple length, and your personal style preferences in addition to the overall frame size.

Q3: What if my calculated size isn't available?
A: Choose the closest available size. It's better to err slightly smaller than larger for better fit and comfort.

Q4: Do different frame styles affect sizing?
A: Yes, some styles may fit differently. Always try frames on when possible, especially with unusual shapes or materials.

Q5: Should children use this calculator?
A: This calculator is designed for adults. Children should be professionally fitted as their facial structures are still developing.