(Frequently Tested) with Verified
Answers Graded A+
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