ABO practice exams

ABO practice exams 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 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. 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 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 The larger the frame difference --------- the lens shape A. Rounder B. More squared off C. Narrower D. Wider 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 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 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 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 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 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 If the frame is crooked with the right side higher than the left, which is not a possible cause? A. The left ear is lower than the right B. The right temple is too short C. The pantoscopic tilt of the right side needs to be decreased. D. The pantoscopic tilt of the right side needs to be increased The main reason for the use of lenticular lenses for high powers would be: A. Cosmetic reasons B. They have more plus power C. They have more minus power D. They are lighter in weight E. They are less expensive 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 What type of frame may be heated until it bends under its own weight? A. Zyle B. Optyl C. Nylon D. None of the above The steps for "finishing" a lens (in correct order) are: A. Centeration, Spotting, Calculation, Blocking, Edging B. Edging, Centeration, Blocking, Spotting C. Calculation, Spotting, Centeration, Blocking, Edging For every 2 degrees of pantoscopic tilt the optical center should be: A. Raised 0.5mm B. Raised 1mm C. Lowered 1mm D. Lowered 0.5mm Usual reading level is considered to be ------- mm below A. 6mm B. 8mm C. 11mm D. 1mm The standard distance between the segments in double segment multifocals in most cases is A. 10 to 12 mm B. 13 to 14 mm C. 14 to 15 mm D. 15 to 16 mm Photochronic lenses will be darkest on which day? A. Warm bright B. Cold bright C. Cloudy warm D. Cloudy cold 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 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 Within the first few minutes of contact with a new customer you must: A. Find out if the customer has a new prescription B. Generate in the customer confidence in your ability C. Commence your "selling conversation" D. Inquire as to the budget available Rx: O.D. +2.00 +2.00 x 90 O.S. +3.00 +3.00 x 180: The tolerance of the cylinder axis of the right lens is: A. 4 degrees B. 5 degrees C. 3 degrees D. 2 degrees The instrument that can help you determine a heat tempered glass lens is: A. a radiuscope B. a vertometer C. a polariscope D. a lens clock For a high minus Rx, which of the following will improve the appearance of the glasses? 1. high index plastic 2. steep base curve 3. a frame with a small ED 4. less decentration A. 1 and 2 B. 1 and 3 C. 1,3, and 4 D. 1,2,3, and 4 Rx: OD -4.50 4BD OD -5.00 2BO Which of the following is a usual way of ordering the lenses? A. OU -4.50 4BD and 2BO B. OD -4.50 2BD 1BO OS -5.00 2BU 1BO C. OD -4.50 4BD OS -5.00 2BO D. OD -4.50 2BD 1BO OS -5.00 2BD 1BO Which of the following is recommended for children's bridge? A. Saddle B. Keyhole C. Adjustable pads D. Golden gate 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 OU +11.00 -1.00 x 90 ADD 3.00 This is an aphakic patient. He wants a separate sunglasses just for golf. What would you recommend? A. a low fitting FT 28 B. RD segment high fitted C. A trifocal D. Just a SV and tell him to slide the glasses down the nose to see near.