How do you lower the front of the frame? Correct 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, on
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How do you lower the front of the frame? Correct 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? Correct 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? Correct Answer: Positive face form
The new bifocal wearer must: Correct 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? Correct Answer: Has face form
What error cannot be detected by the four point test? Correct Answer: Skewing
The main reason for a lenticular lens is? Correct Answer: They are lighter in weight
The steps for "finishing" a lens are? Correct Answer: Edging, Centration, Blocking, Spotting
What type of frame may be heated until it bends under its own weight? Correct Answer: Optyl
Usual reading level is considered to be ______ mm below Correct Answer: 8 mm
Trifocals are most generally prescribed when the patient is: Correct Answer: An advanced presbyope
A bifocal lens wearer having trouble accommodating can be helped by? Correct Answer: Adding plus power to his prescription
The standard distance between double d segments? Correct Answer: 13 to 14mm
What will excessive base up prism cause? Correct Answer: Makes people feel like they are walking down hill
Photochromatic lenses will be darkest on what kind of day? Correct Answer: Cold and bright
A number 3 tint absorbs: Correct Answer: 80% of the light entering the lens
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