Quiz 5 Flashcards
1
Q
Which is the most favorable alternative to a 50-20 frame for measuring bifocal height when that particular size is not available? 52-18 50-18 48-20 50-22
A
48-20 (bridge size is most important.
2
Q
When measuring for multifocal heights, that portion of the eyewire directly below the pupil is used as a zero point, since this is the area of the frame where the multifocal will be placed.
A
False
3
Q
A distometer is used to:
A
measure the vertex distance
4
Q
The OC and the MRP are at exactly the same point on the lens except:
A
when there is prescribed prism present in the prescription
5
Q
The bifocal height for a child should be positioned:
A
at the center of the pupil
