ABO practice exams
The larger the frame difference --------- the lens shape
A. Rounder
B. More squared off
C. Narrower
D. Wider - Narrower
Which of the following statements regarding CR-39 lenses is not correct?
A. They are light
B. They are thinner than glass lenses
C. They scratch easily
D. They are tintable - They are thinner than glass lenses
A customer complains that his old glasses have better visual acuity than the new glasses (same RX).
What should the optician do?
A. Return the customer to the refractionist
B. Remake the lenses
C. Check the base curve
D. Put the old lenses in a new frame - Check the base curve
A frame fits perfectly on your patient. The temples, bridge, and pads are fine, but the frame sits high.
You should select a frame with a bridge that is:
A. Wider
B. Narrower
,C. Higher
D. Lower - Wider
A frame material which is excellent for people with an active lifestyle because of its flexibility and impact
resistance;
A. Cellulose acetate
B. Titanium
C. Nylon - Nylon
A patient's best point of focus is 10". What lens would he need to see 20/20?
A. -10.00D
B. +4.00D
C. -2.00D
D. -4.00D - -4.00D
A lens which reads +3.00 -2.00 x 90 is decentered 6mm too much. How much prismatic effect will wearer
experience?
A. 1.8^
B. 0.6^
C. 3.0^
D. 1.2^ - 0.6^
A Number 3 tint absorbs
A. 80% of the light entering the lens
B. 50% of the light entering the lens
C. 60% of the light entering the lens
, D. 33.3% of the light entering the lens - 80% of the light entering the lens
A patient brings the following Rx to you. What would you do?
Rx: OD -2.00 -1.00 x 180 OS -1.00 +1.00 x 180
A. After transposing the OS, you order the lenses
B. After transposing the OD, you order the lenses
C. You order the lenses the way they are.
D. You will call the refractionist - You will call the refractionist
A patient comes back to the optician complaining of pain behind the ears, possible cause are:
A. Temple tension too great
B. Uneven pressure
C. Temple endpieces angled in too much
D. All of the above - All of the above
D=1/0.254m=3.94---4.00D
A patient's distance Rx is: OU -3.50 -1.50 x 180 and the reading Rx is: OU -1.25 -1.50 x 180. He has
problem seeing small prints and asks for a stronger reading glasses. Also he wants the new pair to be a
bifocal. What ADD would you order for him?
A. -2.25D
B. -2.75D
C. +2.75D
D. +2.25D - +2.75D
The larger the frame difference --------- the lens shape
A. Rounder
B. More squared off
C. Narrower
D. Wider - Narrower
Which of the following statements regarding CR-39 lenses is not correct?
A. They are light
B. They are thinner than glass lenses
C. They scratch easily
D. They are tintable - They are thinner than glass lenses
A customer complains that his old glasses have better visual acuity than the new glasses (same RX).
What should the optician do?
A. Return the customer to the refractionist
B. Remake the lenses
C. Check the base curve
D. Put the old lenses in a new frame - Check the base curve
A frame fits perfectly on your patient. The temples, bridge, and pads are fine, but the frame sits high.
You should select a frame with a bridge that is:
A. Wider
B. Narrower
,C. Higher
D. Lower - Wider
A frame material which is excellent for people with an active lifestyle because of its flexibility and impact
resistance;
A. Cellulose acetate
B. Titanium
C. Nylon - Nylon
A patient's best point of focus is 10". What lens would he need to see 20/20?
A. -10.00D
B. +4.00D
C. -2.00D
D. -4.00D - -4.00D
A lens which reads +3.00 -2.00 x 90 is decentered 6mm too much. How much prismatic effect will wearer
experience?
A. 1.8^
B. 0.6^
C. 3.0^
D. 1.2^ - 0.6^
A Number 3 tint absorbs
A. 80% of the light entering the lens
B. 50% of the light entering the lens
C. 60% of the light entering the lens
, D. 33.3% of the light entering the lens - 80% of the light entering the lens
A patient brings the following Rx to you. What would you do?
Rx: OD -2.00 -1.00 x 180 OS -1.00 +1.00 x 180
A. After transposing the OS, you order the lenses
B. After transposing the OD, you order the lenses
C. You order the lenses the way they are.
D. You will call the refractionist - You will call the refractionist
A patient comes back to the optician complaining of pain behind the ears, possible cause are:
A. Temple tension too great
B. Uneven pressure
C. Temple endpieces angled in too much
D. All of the above - All of the above
D=1/0.254m=3.94---4.00D
A patient's distance Rx is: OU -3.50 -1.50 x 180 and the reading Rx is: OU -1.25 -1.50 x 180. He has
problem seeing small prints and asks for a stronger reading glasses. Also he wants the new pair to be a
bifocal. What ADD would you order for him?
A. -2.25D
B. -2.75D
C. +2.75D
D. +2.25D - +2.75D
