Measure Your Fit with What You’re Already Wearing

Buying glasses online often fails for one simple reason: customers are not confident the glasses will actually fit.

GlassOn addresses this problem with a new measurement approach—using the glasses the customer already wears as the reference.

How it works (technical overview)

The process is intentionally simple:

1. The user wears their current glasses and looks into the camera
2. The user enters the lens width of the glasses (a standard value printed on most frames)
3. GlassOn uses computer vision with a real-world scale reference to calculate precise measurements

The system automatically outputs:

• Pupillary Distance (PD)
• Segment Height (SH)

No rulers. No calibration cards. No in-store visit.

Why this matters

• Reduces measurement errors in online eyewear purchases
• Works especially well for progressive and customized lenses
• Increases confidence for first-time online buyers
• Fits perfectly into any e-commerce checkout flow

GlassOn does not estimate fit—it measures based on what you actually wear.