2024 ABO Exam Prep Part 6 - Opthalmic Frames

2024 ABO Exam Prep Part 6 - Opthalmic Frames New Full Exam Questions and Answers ( Included ) 100% Correct

• Most ophthalmic frames today are measured utilizing the boxing system of

measurement. In this system the B measurement represents the .

• lens difference
• the lens width
• the lens depth
• the effective diameter

Answer: C. the lens depth

• The boxing method of measurement is especially useful since it can accu- rately

locate the of the lens.

• geometric center
• optical center
• primary focal point
• principal axis

Answer: A. geometric center

• A certain patient is found to have a monocular PD measuring R: 31 mm and L 33

mm. The box measurement of the frame selected equals 52 / 18. Locate the major reference points (MRPs) for each eye.

• R= 4mm in L= 2mm in
• R= 2mm in L=4mm in
• R=2mm out L=2 mm out
• R=5mm in L=3 mm in

Answer: A. R=4 mm in L=2mm in

• When measuring a frame, the term DBL is used to mean?

• temple length
• effective diameter
• the least distance between the geometric center of the frame
• the least distance between the lenses

Answer: D. the least distance between the lenses

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• Which of the following best describes a semi-rimless mounting?

• a front consisting of nose pads, pad arms, bridge, eyewires, and the temples
• a bridge with lens bars connecting the end pieces and temples
• a bridge and a pair of temples
• a center bridge, a pair of temples, and a pair of end pieces

Answer: B. a bridge with lens bars connecting the end pieces and temples

• When the measurement of the patient PD is less than the GCD's of the frame, ideally,

the frame to be adjusted with?

• positive face form
• negative face form
• no face form
• orthoscopic angle

Answer: A. positive face form

• A frame with a saddle bridge has been selected for child of 7 years. For which of

the following reasons is this a better choice than a comparable frame with adjustable pads?

• a saddle bridge distributes the weight of the completed eyewear more evenly over a

greater portion of the nose area

• in the event of an accident adjustable pads are more likely to cause injury
• a saddle bridge retains its adjustment better than a frame with adjustable pads

• 1
• 3
• 1 & 2
• 1, 2, & 3

Answer: D. 1, 2 & 3

8. Excessive pantoscopic tilt may be remedied by:

• bending the nose pad arms upward
• bending the pad arms downward
• angling the temples upward from the n endpieces
• angling the temples downward from the endpieces

Answer: C. angling the temples upward from the end pieces

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