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Optician Practical Exam Study Material with Comprehensive Solutions
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Optician Practical Exam Study Material with Comprehensive Solutions
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Optician Practical Exam Study Materialwith Comprehensive Solutions
a +12.00 lens is prescribed at vertex distance of 13mm, the optician fits glasses at
9mm, whats the power of the lens at 9mm? - ANSWER-plus lens sat closer so less
power, +11.50
a bridge type that evenly distributes the weight - ANSWER-saddle bridge
a characteristic of plus lenses is - ANSWER-crossed lines have a scissor movement
when lens is rotated
a glass blowers lens is commonly a - ANSWER-didymium lens, blocks infrared light
amited from molten glass
a kryptok is a - ANSWER-round bifocal
a lens focal length may be altered by? - ANSWER-changing the curvature of one
surface
abbe value is an indication of the lenses? - ANSWER-dispersion
accomadtion is at its best at what age - ANSWER-10 years old
an executive lens is not a - ANSWER-fused bifocal, executive is one piece lens
aniseikonia is caused by what? - ANSWER-unequal retinal image sizes
anisometropia - ANSWER-unequal refractive error in eye
ANSI for cyl axis .25-.50 - ANSWER-7 degrees
ANSI for cyl axis .50-.75 - ANSWER-5 degrees
ANSI for cyl axis .75-1.50 - ANSWER-3 degrees
ANSI for cyl axis 0-.25 - ANSWER-14 degrees
ANSI for cyl axis greater than 1.50 - ANSWER-2 degrees
ANSI for Cyl power 2.00 to 4.50D - ANSWER-.15D
ANSI for cyl power above 4.50D - ANSWER-4%
, ANSI for Cyl power up to 2.00D - ANSWER-.13D
ANSI for horizontal prism? - ANSWER-.67
ANSI for segs? - ANSWER-1mm
ANSI for Sphere pwr above 6.50 is - ANSWER-2%
ANSI for Sphere pwr up to 6.50 - ANSWER-.13D
ANSI for vertical prism? - ANSWER-.33
ANSI fro specified base curve is - ANSWER-.75D
ANSI safety thick lenses have to be atleast - ANSWER-3.0 mm thick
ANSI standard on pd? - ANSWER-2.5mm
antisometropia - ANSWER-1 plus eye 1 minus eye
basic impact safety glasses drop ball test - ANSWER-a ONE inch steel ball dropped
from a height of 50 inches
best lens treatment to reduce water and road glare? - ANSWER-polarized
bicentric grinding is most commonly associated with - ANSWER-regular slab of
bifocals are measured at the ______ not the bottom lashes - ANSWER-bottom lid,
where eyeliner would go
both sides of lens are plus? - ANSWER-biconvex
both sides of lens is minus? - ANSWER-biconcave
bridge type that is deisgned to rest entirely on the nose pads is a - ANSWER-keyhole
bridge
cornea has about - ANSWER-43D of power
corneas index of refraction - ANSWER-1.37
crown glass - ANSWER-1.523
decentration= frame pd divided by 2, minus the pd of that eye, if answer is neg its out if
positive its in - ANSWER-decentration calculation
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