Forum:Seminar papers/Biophysics/2. LF/2018-2019/Group 6/HI

'''Forum:Seminar papers/Biophysics/2. LF/2018-2019/Group 6/HI'''

Optometry MCQs
1 Which one of the vision complications below may be more likely caused by the natural aging process?

A- Hyperopia

B- Astigmatism

C- Presbyopia

D- Myopia C 2 Astigmatism can be corrected by ___ lenses.

A- Concave

B- Toric

C- Convex

D- UV B

3 Which one is NOT true about Snellen type charts?

A- The chart is not standard, therefore, results may be different according to the type of chart.

B- Patient may remember the symbols and this can affect the accuracy of the results.

C- This chart allows optometrist to diagnose refraction problems with the eyes of the patient.

D- At the conventional distance of 6 m normal vision should have the value of 6/6 for each eye separately.

C

4 In examination of the eye with a refractometer convergent rays represent ___.

A- Myopia

B- Physiological state of the eye

C- Vision ability of the patient at 6 meters away from the Snellen chart.

D- Hyperopia A 5 Myopia means ___ A- Farsightedness B- Nearsightedness C- Blindness D- None of the above B 6 Hyperopia means the eyeball is ___

A- Too short

B- Too long

C- Damaged

D- None of the above A 7 Presbyopia is ___

A- When the eye is physically damaged

B- An eye infection caused by bacteria

C- A genetic mutation in the eye

D- None of the above D

8 A refractive error in which the eye doesn’t focus light equally along perpendicular axes is called ___

A- Myopia

B- Presbyopia

C- Astigmatism

D- Colour blindness

C 9 What does the refractometer mainly measure?

A- Focal length of the eye

B- Refraction of the lens system of the eye

C- Field of vision

D- None of the above

B 10 According to the Snellen chart, good vision is ___

A- 6/6

B- 6/12

C- 6/4

D- 4/6 A 11 When using the Snellen chart, the patient should start with ___

A- The bad eye

B- The good eye

C- Both eyes

D- It doesn’t matter

A 12 The smallest lines the patient can read in Snellen’s chart are called ___

A- Division

B- Snellen index

C- Minimum

D- Fraction

D

13 Which of the following methods is used for the optometric examination of the eye:

A-CT scan

B- optotype

C-X Ray

D- none of the above

B 14 Which is correct about optotypes:

A-it’s a subjective method

B-the patient tells the examiner what he see

C-does not tell us anything specific about the eye disorder

D- all the above

D 15 Regarding optical power:

A-it depends on the focal length of lens

B-the units are Dioptres

C-the optical power of the lens of the eye can chang with age

D-all the above

D 16 The refractometer:

A- can distinguish between myopia and hyperopia

B-it’s a subjective method

C- doesn’t calculate the value of optic power

D-none of the above A 17 Choose the correct statement about the refractometer:

A-) infrared light is reflected off the retina

B-) the refraction of the lens system of the eye is measured by checking the direction of the infrared light when it emerges from the eye

C-) the infrared light is detected using a CCD device

D-)all the above

D 18 Which problem can be encountered when using the refractometer’s automatic mode?

A) Calibration Error

B) Too long measurement

C) Permanent loss of eyesight

D) Eye pain

A