Polarized Lenses - Mirror Coatings Flashcards
When the vibration of a light wave is restricted to a single plane, the transmitted light is said to be what?
Plane polarized
Materials that best produce polarized light by reflectance are called what?
Dielectric
The specific angle of incidence which causes polarized light is called what?
Brewster’s angle
When manufacturing polarized lenses, after the polyvinyl alcohol sheets are heated and stretched, they are passed through a weak solution of what?
Iodine
Polarized lenses are available in all of the following materials except:
a.) Glass
b.) Poly
c.) Hi-Index 1.66
d.) None of the above
d.) None of the above
The manufacturing method which involves heating the lens blank is called what?
drop or sag molding
The color which provides excellent contrast and improves visual acuity and depth perception is what?
Brown
The color which provides high contrast and filters out blue light while reducing other visible light is what?
Yellow (The answers key says brown, but the text indicates that it’s yellow)
True or False: One of the advantages of polarized lenses is that they lighten and darken according to the surrounding conditions
False
True or false: Photochromic polarized lenses are now available on the market
True
The polarizing filter is oriented ____ degrees to the angle of the glare
90
Who would benefit most from polarized lenses?
a.) Contact lens patients
b.) Cataract patients
c.) Outdoor enthusiasts
d.) All of the above
d.) all of the above
The best way for the patient to understand the benefits of polarized lenses is what?
Hands-on demonstration
True or false: The secret to selling any premium product is an eye-catching display.
True
Susceptible to “thermal bleaching” is a disadvantage of which lens material?
CR-39
