Lensmart Blog
How to Measure Your Face for the Perfect Sunglass Fit
• 2025-12-17 20:51:06
Guide to measuring your face for sunglasses. Learn how to accurately measure face width and pupillary distance, decode frame sizes, and get expert tips for a perfect fit.
Light Transmission (VLT): Why 99% Clarity Matters for Your Vision
Lensmartonline • 2026-02-01 14:28:07
Covers the science of VLT, the black card test for quality coatings, and care tips for lasting lens performance.
A Man's Guide to Sunglass Bridge Fit & Nose Pads
• 2025-12-17 20:51:18
Guide explains sunglass bridge fit differences and how to adjust nose pads for a secure, no-slip fit. Learn to customize metal nose pads or use silicone for plastic frames, ensuring comfort and eye protection.
Infused vs. Coated Blue Light Lenses: Which Lasts Longer?
Lensmartonline • 2026-02-01 14:28:25
Examines scratch resistance, peeling, and cleaning solution impact to determine which lens type offers a longer-lasting investment for screen users.
Frame Width Guide: Sunglasses for Narrow vs. Wide Faces
• 2025-12-17 20:51:32
Guide explains how to find the perfect sunglasses fit. Measure your face width, use our expert chart, and avoid pinching or slipping frames. Ensure all-day comfort and optimal protection online.
The Science of Photochromics: Why Temperature Affects Tint Darkness
Lensmartonline • 2026-02-01 14:28:46
Covers the chemistry of adaptive lenses, temperature's role in performance, and best use cases versus traditional sunglasses.
What Do the Numbers on My Sunglass Frames Mean?
• 2025-12-17 20:51:41
Guide to sunglass frame numbers (e.g., 52-18-140). Learn lens width, bridge, temple length, and how to use them for a great fit. Understand total frame width, PD, & fix common issues.
Oleophobic Coatings: Why High-End Lenses Repel Smudges and Water
Lensmartonline • 2026-02-01 14:29:19
Covers the technology, lab tests for durability, and essential do's and don'ts for maintaining high-end lens coatings.
Decoding Temple Arm Length for a Secure Sunglass Fit
• 2025-12-17 20:51:53
Guide to understanding temple arm length for sunglasses. Learn how to measure for a perfect fit, diagnose issues, and ensure comfortable wear all day.
AR Coating Peeling? Why Hot Water and Soap Ruin Your Lenses
Lensmartonline • 2026-02-01 14:29:38
Covers thermal shock, harsh chemicals, and abrasives that destroy AR coatings, plus a step-by-step safe cleaning and storage method.
How Frame Shape Influences Sunglass Size Perception
• 2025-12-17 20:52:05
This guide debunks the 'eye size' myth, explaining how sunglass frame shape dictates fit, coverage, and style. Learn to choose the right shape for sun protection, high prescriptions, and different nose bridges with confidence.
Free-form Digital Surfacing: Point-by-Point Lens Optimization
Lensmartonline • 2026-02-01 14:29:55
Compares conventional vs. digital lens surfacing, detailing benefits for night driving and why precise PD measurement is critical for results.