Choosing frames: material, size and fit
A light frame is only one part of a comfortable pair of glasses.
THE CLEAR VISION GUIDE
Frame materials
Understand materials, fit and care.
Is acetate different from plastic?
Keep the material, manufacturing route and surface pattern separate.
TR90: flexible does not mean unbreakable
Understand polyamide grades, springiness and the limits of a bending demonstration.
Titanium and beta titanium: what differs?
Read alloy names alongside the construction and skin-contact components.
Stainless, nickel-free and skin-friendly?
Separate corrosion behaviour from pressure marks and contact allergy.
PEI heat resistance is not a cleaning instruction
A resin rating describes a different object from assembled glasses.
Carbon fibre and aluminium: read the label carefully
Ask which material is used, where it is used and what is adjustable.
Loose or crooked frames: adjust or repair?
Find the affected part before applying heat, force or a cleaner.