ABO practice Exam Questions and Answers

If the wearer complains of the bifocal line being somewhat in his way when driving, the problem may be alleviated by decreasing the distance between pads. True or False - ANSWER-False If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is that: A. The frame is too small B. The bridge fit is tight C. Pressure is being applied by the temple shafts anterior to the ear. D. Pressure is being applied on the very tips of the temples. - ANSWER-Pressure is being applied by the temple shafts anterior to the ear If both nosepads press the nose or indent too much, what is probably not a possible cause? A. Pads too small for frame weight B. Temple spread is not even C. Pads too close together D. Temple tension too great - ANSWER-Temple spread is not even To eliminate a gap between the lens and a metal eyewire, the best alternative is to: A. Place a strip of lens liner at a point exactly opposite the gap B. Place a strip of lens liner in the gap area C. Heat the lens in the frame and allow it to cool at room temperature D. None of the above methods are satisfactory E. All of the above methods are satisfactory - ANSWER-Place a strip of lens liner at a point exactly opposite the gap The larger the frame difference --------- the lens shape A. Rounder B. More squared off C. Narrower D. Wider - ANSWER-Narrower (Frame Difference=A-B) Which is the most favorable alternative to a 50/20 frame for measuring bifocal height when that particular size is not available? A. 52/18 B. 50/18 C. 48/20 D. 50/22 - ANSWER-48/20 (would want bridge to stay the same) When the frame front is tested for four point tough, but only touches on the two temporal sides, the frame -------- A. is skewed B. has face form C. is out of coplanar alignment D. has X ing E. none of the above - ANSWER-Has face form Which of the following errors will not be detected by a four point touch test? A. X-ing B. Excess face form C. Skewing D. All of the above can be detected using a four point touch - ANSWER-Skewing It is unnecessary to use heat in adjusting a zyl frame when: A. Bending the endpieces B. Changing the bridge area C. Bending the temple earpiece D. Changing the pantoscopic angle - ANSWER-Changing the pantoscopic angle If you didn't adjust the eye piece on the lensometer and the power drum reads +0.25 when the target lines are clear and focused. What do you expect the true readings for this pair of glasses be? O.D. -1.75 OS +1.75 A. -1.50, +2.00 B. -1.75, +1.75 C. -1.75, +2.00 D. -1.50, +1.75 - ANSWER--1.50, +2.00 What is the final step in fitting a frame to a patient? A. Aligning the frame vertically B. Aligning the frame horizontally C. Adjusting the pantoscopic tilt D. Adjusting the temples - ANSWER-Adjusting the temples