ABO Practice Questions And Correct
Answers
How do you lower the front of the frame? - answerMove nose pads further apart or increase
pantoscopic tilt (2 degrees = 1mm)
If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is
that? - answerPressure is...
How do you lower the front of the frame? - answer✔✔Move nose pads further apart or increase
pantoscopic tilt (2 degrees = 1mm)
If the wearer complains that the glasses feel snug but still slip down the nose, one likely cause is
that? - answer✔✔Pressure is being applied by the temple shafts anterior to the ear.
When the wearers PD is less than the frame PD what should you do? - answer✔✔Positive face
form
The new bifocal wearer must: - answer✔✔Drop the eyes to read a book
When the frame front is tested for four point touch, but only touches on the two temporal sides,
the frame is? - answer✔✔Has face form
What error cannot be detected by the four point test? - answer✔✔Skewing
The main reason for a lenticular lens is? - answer✔✔They are lighter in weight
The steps for "finishing" a lens are? - answer✔✔Edging, Centration, Blocking, Spotting
What type of frame may be heated until it bends under its own weight? - answer✔✔Optyl
Usual reading level is considered to be ______ mm below - answer✔✔8 mm
Trifocals are most generally prescribed when the patient is: - answer✔✔An advanced presbyope
A bifocal lens wearer having trouble accommodating can be helped by? - answer✔✔Adding plus
power to his prescription
The standard distance between double d segments? - answer✔✔13 to 14mm
What will excessive base up prism cause? - answer✔✔Makes people feel like they are walking
down hill
Photochromatic lenses will be darkest on what kind of day? - answer✔✔Cold and bright
A number 3 tint absorbs: - answer✔✔80% of the light entering the lens
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