MCQs Practice OM

Question 1

Which is the smallest increment typically used when writing a spectacle or contact lens prescription?

Answer 1

0.25D

Question 2

Which of the following can be part of a spectacle frame made from non-metallic materials?

a) Keyhole Pad Bridge
b) Pad Bridge
c) Regular bridge
d) All of the above

Answer 2

d) All of the above

Question 3

Split the prism RE 10Prism IN, 4Prism UP

Answer 3

RE 5prism IN 2prism UP LE 5prism IN 2prism DWN

Question 4

Which of the following is not a type of side?

a) Straight end
b) Loop end
c) Drop end
d) Bar end

Answer 4

d) Bar end

Question 5

Which of the following is False regarding lenticular lenses?

a) Both plus and minus lenses can be made as lenticulars
b) Blended lenticulars are optimally much poorer than conventional lenses
c) They are used only for relatively high prescriptions
d) They are heavier and thicker than a standard lens form of the same power

Answer 5

d) They are heavier and thicker than a standard lens form of the same power

Question 6

Which of the following frame repairs is least likely to be carried out in routine optometric practice?

a) Replacing nose pads
b) Soldering
c) Screw Replacement
d) Drilling a new hole for broken screw

Answer 6

b) Soldering

Question 7

Which of the following terms is not usually used to classify spectacle frames?

a) Metal Frame
b) Plastic Frame
c) Combination Frame
d) Rubber Frame

Answer 7

d) Rubber Frame

Question 8

Which of the following is the least likely material to be used in current spectacle frames

a) Cellulose propionate
b) Cellulose acetate
c) Epoxy resins
d) Cellulose nitrate

Answer 8

d) Cellulose nitrate

Question 9

Which statement about Franklin split bifocals is False?

a) They can be thick when they incorporate high prism powers
b) They can be made with almost any prism power and base direction
c) They are comprised of two lenses that are fused together
d) They look like poorly made E-segment solid bifocals

Answer 9

c) They are comprised of two lenses that are fused together

Question 10

Which of the following statements relating to the Abbe number of a lens is correct?

a) An Abbe number ≥ 45 indicates low dispersion
b) The Abbe number is irrelevant when it comes to describing spectacle lenses
c) For plastic material, the Abbe number decreases as refractive index increases
d) The Abbe number must always be included in a spectacle lens order

Answer 10

a) An Abbe number ≥ 45 indicates low dispersion

Question 11

How can the field of view be increased for a patient using varifocal lenses?

a) Ensure meticulous centration of fitting cross and appropriate pantoscopic angle
b) Decrease the BVD
c) Select a frame with minimal frame rim thickness
d) All of the answer options are correct

Answer 11

d) All of the answer options are correct

Question 12

When using a manual focimeter, which step is typically carried out first?

Answer 12

Adjust the eye piece

Question 13

What is meant by the term ‘gradual tint’ in relation to spectacle lenses?

Answer 13

Lens appears darker at the top and lighter at the bottom

Question 14

Which of the following statements is true?

a) The bridge of a plastic frame can only be adjusted by the manufacturer
b) The bridge of a plastic frame cannot be adjusted in three small increments
c) The bridge of a plastic frame can be adjusted by carefully using a frame heater
d) The bridge of a plastic frame can be adjusted using one’s hand

Answer 14

c) The bridge of a plastic frame can be adjusted by carefully using a frame heater

Question 15

Which of the following is the most typical symptom given by patients with myopia in both eyes?

a) Objects in distance are blurry
b) Need to concentrate too hard to see clearly
c) Objects up close are blurry
d) Eyes feel strained all the time

Answer 15

a) Objects in distance are blurry

Question 16

Where are spectacle lenses that are prescribed to correct hyperopia usually thickest?

Answer 16

At the centre

Question 17

Which of the following is NOT a term typically used to describe an aberration in association with spectacle lenses?

a) Distortion
b) Orthophoria
c) Coma
d) Spherical aberration

Answer 17

b) Orthophoria

Question 18

UV radiation is present outdoors most of the time. What level of protection do spectacle lenses provide and which statement is most likely true?

a) Plastic lenses absorb most UV
b) UV exposure does have no impact on the risk for cataract development
c) High-index plastic lenses absorb nearly no UV
d) Low- index plastic lenses absorb no UV

Answer 18

a) Plastic lenses absorb most UV