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

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

Optometry MCQs Question number MCQ Answer 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, the most common vision is ___ A- 6/6 B- 6/12 C- 6/4 D- 4/6 C 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 be changed 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