Tints & Glare
What type of glare causes halos around headlights on wet roads?
Distracting Glare
Polarized lenses eliminate which type of glare outright?
Blinding glare
What activates photochromic lenses?
UV
What manufacturing process applies mirror coatings?
Vacuum deposition
A patient wants better contrast on the golf course.
Brown or copper polarized
Which tint distorts color the least?
Grey
Why is polarization considered a safety feature for outdoor sports?
It helps spot hazards sooner by eliminating glare and improving contrast.
Why don’t photochromics fully darken in the car?
Windshield glass blocks most UV
Which mirror type is best for photochromic lenses?
Flash mirror
A patient fishes at dawn and says dark sunglasses make everything too dim. They want contrast without losing visibility.
Light amber or copper polarized (not dark gray) for contrast in low light; avoid full mirrors.
What type of glare is caused by light reflecting off a smooth surface and washing out detail?
Blinding Glare
Name one “duty to warn” item for polarized lenses.
LCD blackout, downhill skiing ice patches, cross‑hatching in auto glass
Name one variable that affects photochromic performance.
Light intensity, temperature, lens thickness, exposure memory
Why is backside AR important on mirrored lenses?
It prevents rear reflections from bouncing into the eye.
A long‑haul driver needs to read dashboard screens. What do you recommend?
Gradient mirror on a grey or brown base
Brown and copper tints are best for what visual benefit?
Increased contrast and depth perception
Why do LCD screens sometimes appear blacked out when viewed through polarized lenses?
Because the screen’s polarization aligns with the lens, blocking light transmission.
Why is transbonded photochromic technology considered the premium option?
It offers excellent adhesion, improved scratch resistance, and pure optics.
Why can a mirror coating look heavier indoors on a photochromic lens, even if the mirror is only flash level?
Because reflectance is fixed while the tint changes — when the lens is light indoors, the mirror stands out more.
A skier wants better terrain definition. What do you recommend?
Dielectric mirror over a contrast tint
Why can’t a tint alone solve glare off water or wet roads?
Tints dim light but do not remove reflected glare
In what ways do polarized lenses reduce visual fatigue during long outdoor activities?
They eliminate reflected glare, reducing squinting and accommodative strain.
Why should photochromics be positioned as convenience lenses rather than a replacement for dedicated sunwear?
They adapt to UV but do not provide the same consistent glare control or full density as polarized sunglasses.
What is the optical reason a mirror coating reduces transmission?
The mirror reflects a high percentage of incoming light, turning it away before it enters the lens, lowering transmission.
A boater complains about intense reflected light off the water. Build the full lens solution.
Polarized gray base + full silver mirror + backside AR + wet‑clean care instructions