Lens Types & Materials
Which lens material is impact resistant?
Polycarbonate
What color pads are used for fining a polycarbonate lens?
dark brown/black
What is the Pro-Plus copay for SV photochromic lenses?
$20
What does the ANSI standard chart tell us?
Whether or not a prescription lens is correct based on specified tolerances
What is the minimum seg height for Zeiss Easy View lenses?
17
What is the minimum seg height for a trifocal lens?
17
At SVE we coat which surface lenses?
Polycarbonate and High Index
What is the price for one pair of SV CR-39 lenses with a $49.99 frame? (before tax)
$79.99
What unit of measurement is used to indicate the refractive power of a lens?
What are the sph and cyl lines inside the lensometer called?
Mires
What is the index of refraction of a Zeiss Easy View high index lens?
1.67
What is used to correct astigmatism?
What percentage of sales tax is the customer responsible for when using Superior Vision insurance?
70%
American National Standards Institute
Plus lenses correct which refractive condition?
Hyperopia
Presbyopia is corrected with what?
A multifocal lens
When blocking a lined multifocal lens, the pupillary distance will always be _________.
monocular
What is the price for a CR-39 trifocal using a patient's own frame with a grey 3 tint? (before tax)
$119.95
What is the tolerance for horizontal prism?
2/3 of a diopter
What does it mean when a patient's eyes are emmetropic?
They are "normal", or free from refractive error and need no lens correction.
What type of lined bifocal lens provides the largest reading area but is heavier and thicker than other bifocals?
Executive
Base down prism
What is the price for a SV AR with an $89.99 frame and a SV photochromic with a $49.99 frame, adding Pro-Plus to both pair? (before tax)
$378.90
What is the tolerance for segment location?
Within +/- 0.5 mm of specified height
Which color in the visible spectrum has the shortest wavelength?
Violet