OCPP volume 3 UPDATED ACTUAL Questions and CORRECT Answers
1. What federal agency is charged with regulat- OSHA
ing safety practices in the workplace?
2. What federal agency is charged with protect- EPA
ing human health and the environment?
3. What is the name of the document provided SDS
to workers when working with a substance
4. Is an SDS required for all hazardous materials Yes
5. Which is the proper method of disposing of Check with your local authorities re-
optical laboratory waste garding how to dispose of each waste
and keep it documented
6. First lensometer reading is -0.50 and the sec- -0.50-2.25x023
ond reading is -2.75 with axis 023. What is the
rx?
7. First lensometer reading is +2.00 and second +2.00-1.00x045
reading is +1.00 with axis 045. What is the rx?
8. The term lensometer is a generic term. The Focimeter
correct name for the instrument is
9. Rather than actually reading the power of the We are neutralizing the power of the
lenses, what are we really doing? lens by measuring the focal length.
The instrument converts focal length to
dioptric power
10. When viewing through the eyepiece, as you Minus power-with motion
move a lens to the right the image also goes
to the right, what type of lens is it?
,11. When neutralizing a pair of eyewear in a Focus the eyepiece. With the instru-
lensometer, the first thing you should do is? ment off, place a white piece of paper
on the lens stop. Rotate the eyepiece
quite a bit to the left and then slowly
rotate to the right. When the mires are
clear, stop
12. The image in the lensometer has both sphere This illustrates a sphere power
and cylinder lines in focus...
13. The image in the lensometer has only the This indicates a sphero/cylindrical
sphere lines in focus but not the cylinder power
14. The image in the lensometer has both sphere It is a spherical power lens. Because
and cylinder lines in focus but are off center. the lines are off center and above the
This represents? center we can read the amount of
prism
15. If you are neutralizing a lens and get the +3.00-2.00x180
sphere lines clear at +3.00 at 180 and the cylin-
der lines clear at +1.00, what is the power of
the lens?
16. If you are neutralizing a lens and get the +2.50-3.50x045
sphere lines clear at +2.50 at 45 degrees and
the cylinder comes in clear at -1.00 what is the
power of the lens?
17. If you are neutralizing a pair of single vision Identify which lens is stronger and
glasses and you center the mites on the OD center that one first, then switch to the
and when you move to the OS the target is opposite lens to determine how much
below center, what should you do? prism is in the lens
, 18. If you are neutralizing a single vision lens and -4.50-1.00x090
the first image comes in clear at -4.50 at 90
and the second one comes in at -5.50 what is
the power of the lens?
19. If you are neutralizing a lens and the first -4.50+1.00x090
image comes in clear at -4.50 at 90 and the
second image comes in clear at -3.50 what is
the power of the lens?
20. Explain how to neutralize the power of a mul- Neutralize the distance just as you
tifocal would for single vision. To determine
the add power turn the lens around
and read the sphere power. Then move
to the segment and read the sphere
power. The difference between the two
is the add power
21. If you are neutralizing a multifocal lens and The power of the lens is
the lines come into focus at +2.50@145 and +2.50-1.50x145 add is +2.50 It is not
the cylinder lines at +1.00 and then when you necessary to see the focus for the
move down to the segment the two readings cylinder
are +5.00 and +3.50 what is the power of the
lens?
22. Why do colors look different in fluorescent Fluorescent lights have little red and
light? cause objects to reflect more blue
green
23. What are the three primary colors red, blue, yellow
24. What is the difference between black and gray Density. Pure black will absorb all light
and reflect back nothing, gray because
1. What federal agency is charged with regulat- OSHA
ing safety practices in the workplace?
2. What federal agency is charged with protect- EPA
ing human health and the environment?
3. What is the name of the document provided SDS
to workers when working with a substance
4. Is an SDS required for all hazardous materials Yes
5. Which is the proper method of disposing of Check with your local authorities re-
optical laboratory waste garding how to dispose of each waste
and keep it documented
6. First lensometer reading is -0.50 and the sec- -0.50-2.25x023
ond reading is -2.75 with axis 023. What is the
rx?
7. First lensometer reading is +2.00 and second +2.00-1.00x045
reading is +1.00 with axis 045. What is the rx?
8. The term lensometer is a generic term. The Focimeter
correct name for the instrument is
9. Rather than actually reading the power of the We are neutralizing the power of the
lenses, what are we really doing? lens by measuring the focal length.
The instrument converts focal length to
dioptric power
10. When viewing through the eyepiece, as you Minus power-with motion
move a lens to the right the image also goes
to the right, what type of lens is it?
,11. When neutralizing a pair of eyewear in a Focus the eyepiece. With the instru-
lensometer, the first thing you should do is? ment off, place a white piece of paper
on the lens stop. Rotate the eyepiece
quite a bit to the left and then slowly
rotate to the right. When the mires are
clear, stop
12. The image in the lensometer has both sphere This illustrates a sphere power
and cylinder lines in focus...
13. The image in the lensometer has only the This indicates a sphero/cylindrical
sphere lines in focus but not the cylinder power
14. The image in the lensometer has both sphere It is a spherical power lens. Because
and cylinder lines in focus but are off center. the lines are off center and above the
This represents? center we can read the amount of
prism
15. If you are neutralizing a lens and get the +3.00-2.00x180
sphere lines clear at +3.00 at 180 and the cylin-
der lines clear at +1.00, what is the power of
the lens?
16. If you are neutralizing a lens and get the +2.50-3.50x045
sphere lines clear at +2.50 at 45 degrees and
the cylinder comes in clear at -1.00 what is the
power of the lens?
17. If you are neutralizing a pair of single vision Identify which lens is stronger and
glasses and you center the mites on the OD center that one first, then switch to the
and when you move to the OS the target is opposite lens to determine how much
below center, what should you do? prism is in the lens
, 18. If you are neutralizing a single vision lens and -4.50-1.00x090
the first image comes in clear at -4.50 at 90
and the second one comes in at -5.50 what is
the power of the lens?
19. If you are neutralizing a lens and the first -4.50+1.00x090
image comes in clear at -4.50 at 90 and the
second image comes in clear at -3.50 what is
the power of the lens?
20. Explain how to neutralize the power of a mul- Neutralize the distance just as you
tifocal would for single vision. To determine
the add power turn the lens around
and read the sphere power. Then move
to the segment and read the sphere
power. The difference between the two
is the add power
21. If you are neutralizing a multifocal lens and The power of the lens is
the lines come into focus at +2.50@145 and +2.50-1.50x145 add is +2.50 It is not
the cylinder lines at +1.00 and then when you necessary to see the focus for the
move down to the segment the two readings cylinder
are +5.00 and +3.50 what is the power of the
lens?
22. Why do colors look different in fluorescent Fluorescent lights have little red and
light? cause objects to reflect more blue
green
23. What are the three primary colors red, blue, yellow
24. What is the difference between black and gray Density. Pure black will absorb all light
and reflect back nothing, gray because
