Term
| the breaking up of the white light into component color is called |
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Definition
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Term
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Definition
| the ratio of the speed of light in air to the speed of light in an optical medium |
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Term
| what is light transmission |
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Definition
| the ratio of light entering to the light leaving a lens |
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Term
| the best sunglasses to reducing the glare is a |
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Definition
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Term
| what is the best tint for sensitivity to light indoors |
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Definition
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Term
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Definition
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Term
| which are of retina is responsible for the sharpest image |
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Definition
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Term
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Definition
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Term
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Definition
located at the macula
and are responsible for color and visual acuity |
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Term
| ----- is located in the middle of the iris |
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Definition
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Term
| which one is not a complication of the UV radiation |
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Definition
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Term
| what is the best tint for a shooting glass |
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Definition
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Term
| what would you recommend to an aphakic patient |
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Definition
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Term
| what would you recommend for fishing |
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Definition
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Term
| what would you recommend for driving at night |
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Definition
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Term
| what does a blu-blocker lens do |
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Definition
| cuts off wavelengths of less than 500NM |
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Term
| mirror coated lenses increase |
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Definition
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Term
| when you are ordering UV protection and AR coating ,tinting and scratch resistant coating which one is the last coating put on the lenses |
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Definition
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Term
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Definition
| plastic lenses that change their shade because of UV |
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Term
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Definition
| become darker on a cold and sunny day |
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Term
| what woukd you recommend for somebody who complains of photophobia |
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Definition
| tint lenses (photophobia is light stbly) |
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Term
| what is ptosis and how is it corrected |
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Definition
| ptosis is a droopy eye lid and it is corrected by ptosis crutch |
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Term
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Definition
| the eye turns OUT occasionally |
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Term
| to correct esophoria patient needs |
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Definition
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Term
| splitting prism results in |
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Definition
weight balance
cosmetically better glesses
less fitting problems
ALL OF THE ABOVE |
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Term
| how do you split the prism when the RX has 8 base in of the right eye |
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Definition
| OD 4 base in OS 4 base in |
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Term
how do you split OD 4 base in
OS 6 base up |
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Definition
OD 2 base in 3 base down
OS 2 base in 3 base up
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Term
| what is the main function of the sclera |
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Definition
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Term
| what is the function of the ciliary muscles |
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Definition
| to change the shape of the crystalline lens |
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Term
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Definition
| the transition zone between the cornea and the sclera |
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Term
what are rods responsible for
and where are they located |
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Definition
they can function at night (night vision )
they are for peripheral vision
they are located at the periphery of the retina |
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Term
| what are cones function for and where are they located |
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Definition
there function are for central vision
they are responsible for color perception
they are for visual acuity (to be able to see details )
they are located on the macula |
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Term
| a 5 year old walks to your optical dispensary ,you notice that when he wants to look to the frame his right eye turns in ,what is the problem |
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Definition
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Term
| to correct an amblyopic eye the ppatient should patch |
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Definition
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Term
| in compound myopia the images are |
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Definition
| both anterior to the retina |
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Term
| which of the following frame types secures the lenses in place with clip |
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Definition
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Term
| which of the following frame type has only one point of |
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Definition
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Term
| which of the following do you recommend for a persom with a long nose |
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Definition
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Term
| this material is often used for temples because of its straight and felxibilty |
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Definition
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Term
| which of the following frame material should be soaked overnight periodically |
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Definition
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Term
| a frame material which is excellent for people with an active lifestyle because of it flexibility and impact resistance |
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Definition
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Term
| this frame material shrinks as heat is applied |
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Definition
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Term
| what is the first thing you do when you want to use the lensometer |
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Definition
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Term
| which of the following should be avoided when fitting a high minus wearer |
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Definition
squared off corners
should but pt in a small round frame |
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Term
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Definition
| choose a high temple frame |
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Term
| which of the following face type almost can wear any style frame |
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Definition
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Term
| when putting a frame into standard alignment always being with the |
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Definition
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Term
| when focusing the eyepiece on a lensometer always being by turning the eyepiece |
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Definition
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Term
| a skewed bridge would be detected by which alignment test |
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Definition
| horizontal alignment test |
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Term
| an error in standard alignment where when viewed from the front one lens appears to be somewhat higher than the other is called |
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Definition
| lenses out of horizontal alignment |
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Term
| to check temple parallelism use |
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Definition
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Term
| in order to move a frame closer to a patient's face |
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Definition
| widen the adjustable pads |
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Term
| if the right lens is higher |
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Definition
| angle the right temple upward or left temple down |
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Term
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Definition
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Term
| in order to raise a frame higher on a patient 's face |
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Definition
narrow the bridge
bend the guard arms down
narrow the distance between the adjustable pads |
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Term
| the ideal frame for a progressive wearer is |
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Definition
| any frame with at least 22mm fitting height with not much of nasal slant |
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Term
| if a patient complains that the bifocal line is somewhat in his way when driving what would you do or recommend |
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Definition
| widen the adjustable pads |
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Term
| a progressive wearer complains that her peripheral vision for close up too narrow ,what would you recommend to decrease the vertex distance and widen her field of vision |
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Definition
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Term
| if the wearer complains that the glasses feel snug but still slip down the nose one likely cause is that |
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Definition
| pressure is being applied by the temple shaft anterior to the ear |
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Term
| a porperly positioned temple bend occurs |
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Definition
| just behide the top of the ears |
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Term
| the MRP of a progressive lens is |
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Definition
| 2 to 4 mm below the fitting cross |
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Term
| to verifty the power of a progressive lenses |
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Definition
| the semicircle above the fitting cross should be under the lensometer |
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Term
| the monocular PD measurement is recommended for |
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Definition
progressive
high rx
facial asymmetry |
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Term
| the cause of unequal vertex distance are |
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Definition
unequal temple spread
one side wearer head is wider than the other side
bowed temple |
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Term
| the fitting triangle is the connection of 3 point which pressure may be exerted |
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Definition
| the creat of the nose and the sides of the head just above the roots of the ears |
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Term
| the frame difference is the difference between the A and B measurements in a frame .in a round frame the frame difference is |
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Definition
| zero (the lens are round ) |
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Term
| the FPD is 67 and the A measurement is 47 .the frame is round the PPD is 72 how much is the MBS and the DEC for the frame |
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Definition
| 2.50 out but we need ED to calculate the MBS |
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Term
| how would you check the lens warpage |
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Definition
| lens clock will read cylinder on the base curve |
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Term
| what is polariscope (colmascope) for |
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Definition
to check the heat treated glass lenses
to check the strain lens (check stress on lens ) |
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Term
| if the right temple is angled down it will |
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Definition
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Term
| what type lens would you recommend to 50 year old electrician |
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Definition
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Term
| trifocal TF28 also written what way |
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Definition
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Term
| in which of the following processes the exchange of the ions does take place |
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Definition
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Term
|
Definition
| marked Z 87.1 by manufacturer |
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Term
| what would you recommend to a presbyopic pilot |
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Definition
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|
Term
| what lens design do you recommend for a high plus patient |
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Definition
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|
Term
| when does medicare pay for cataract surgery |
|
Definition
| when the VA is 20/50 or less |
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Term
| iseikonic lenses are recommended for |
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Definition
| for magnification imbalance |
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Term
| an ophthalmic correction for an ametropia is focus parallel incident light rays at |
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Definition
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