OCPP Volume III Final Exam UPDATED ACTUAL Questions and CORRECT
Answers
1. The correct transposed Rx for -1.00-0.50x37 is? -1.50+0.50x127
2. The correct transposition for +2.00-2.00x060 is? Plano+2.00x150
3. An uncut lens must be at least mm in diameter to 60mm
allow the edging of a 54mm round lens decentered
3mm in:
4. A +3.00 sphere lens has a front base curve of +6.25. -3.25
What is the back surface curve?
5. A -2.00-1.00x045 lens has a front base curve of +6.25. -8.25 -1.00
What are the back surface curves?
6. Moving the optical center of a plus lens inward from Base in prism
the correct PD results in .
7. Where will the spherical center appear in a lensometer To the left of the target
when neutralizing a left lens for base in prism? center
8. Glazing is another term used to indicate . Inserting a lens into a
frame
9. Frequently, bicentric grinding (slab-off) is used as a Up
means of obtaining prism in the reading field to cor-
rect induced prism imbalance. The usual correction
during the fabrication process is achieved by grinding
prism in the following direction:
10. A patient stops in to see you for an adjustment of Angle the temples upward
his glasses. After careful inspection, you find the only from the end pieces
thing wrong that there is too much pantoscopic tilt. To
make the necessary adjustment you will:
, 11. If the Rx is +2.00-4.00×135 it would be necessary to Not possible
decenter the lens to create 1.00Δ base in:
12. Rewrite the RX below, which is prescribed for a patient OD -1.00-0.50x090 3.00Δ-
afflicted with double vision, so as to make better bal- BU
anced lenses: OS -1.25-0.50x090 3.00Δ-
OD -1.00-0.50x090 5.00ΔBU BD
OS -1.25-0.50x090 1.00ΔBD
13. Correct the imbalance in the following prescription by 2.75Δ BU in OS
use of slab-off. Reading level is 10mm.
OD: +5.00 -2.00 x 090
OS: +2.25 -3.00 x 090
14. You are fitting a patient with a stock frame, DBL 0.9Δ BI
24mm, eye size 44mm, and 135mm skull temples. The
patient's distance PD is 62 mm. How much prism was
induced if for some unfortunate reason the lenses are
not decentered?
RX: OU -2.25 -1.50 x 045
15. Α situation where the frame front is somewhat twist- X-ing
ed, with the planes of the two lenses being out of line
with one another, is called:
16. When a frame is said to have a parabolic curve (or The bridge of the frame is
positive face form), the following condition is meant: out further than the end
pieces
17. If the lenses of a patient wearing -8.00 spheres are Increase minus power ef-
brought closer or his/her eyes, what if any effect will fect
this have on the lenses?
Answers
1. The correct transposed Rx for -1.00-0.50x37 is? -1.50+0.50x127
2. The correct transposition for +2.00-2.00x060 is? Plano+2.00x150
3. An uncut lens must be at least mm in diameter to 60mm
allow the edging of a 54mm round lens decentered
3mm in:
4. A +3.00 sphere lens has a front base curve of +6.25. -3.25
What is the back surface curve?
5. A -2.00-1.00x045 lens has a front base curve of +6.25. -8.25 -1.00
What are the back surface curves?
6. Moving the optical center of a plus lens inward from Base in prism
the correct PD results in .
7. Where will the spherical center appear in a lensometer To the left of the target
when neutralizing a left lens for base in prism? center
8. Glazing is another term used to indicate . Inserting a lens into a
frame
9. Frequently, bicentric grinding (slab-off) is used as a Up
means of obtaining prism in the reading field to cor-
rect induced prism imbalance. The usual correction
during the fabrication process is achieved by grinding
prism in the following direction:
10. A patient stops in to see you for an adjustment of Angle the temples upward
his glasses. After careful inspection, you find the only from the end pieces
thing wrong that there is too much pantoscopic tilt. To
make the necessary adjustment you will:
, 11. If the Rx is +2.00-4.00×135 it would be necessary to Not possible
decenter the lens to create 1.00Δ base in:
12. Rewrite the RX below, which is prescribed for a patient OD -1.00-0.50x090 3.00Δ-
afflicted with double vision, so as to make better bal- BU
anced lenses: OS -1.25-0.50x090 3.00Δ-
OD -1.00-0.50x090 5.00ΔBU BD
OS -1.25-0.50x090 1.00ΔBD
13. Correct the imbalance in the following prescription by 2.75Δ BU in OS
use of slab-off. Reading level is 10mm.
OD: +5.00 -2.00 x 090
OS: +2.25 -3.00 x 090
14. You are fitting a patient with a stock frame, DBL 0.9Δ BI
24mm, eye size 44mm, and 135mm skull temples. The
patient's distance PD is 62 mm. How much prism was
induced if for some unfortunate reason the lenses are
not decentered?
RX: OU -2.25 -1.50 x 045
15. Α situation where the frame front is somewhat twist- X-ing
ed, with the planes of the two lenses being out of line
with one another, is called:
16. When a frame is said to have a parabolic curve (or The bridge of the frame is
positive face form), the following condition is meant: out further than the end
pieces
17. If the lenses of a patient wearing -8.00 spheres are Increase minus power ef-
brought closer or his/her eyes, what if any effect will fect
this have on the lenses?
