NHPC OP License Exam Practice Set 1
Test your medical knowledge with these multiple choice questions. Click on any option to see the correct answer.
1. Endothelial decompensation occurs if endothelial cell density is below
Correct Answer: C. 500 /mm sq
2. One of the following is true
Correct Answer: A. Lens flexure will induce a plus cylinder whose axis is aligned with flattest
corneal meridian
3. When the whole eye ball is enucleated, we can also preserve the severed sclera in 90% ethanol after processing. The preservation period during which it is accepted for surgical procedures
Correct Answer: C. 6 months
4. According to Holden and Mertz criteria, hydrogel lens with the critical oxygen transmissibility of 87.0 ± 3.3 x 1-9 (cm x ml O2) /(sec X ml x mmHG) may create the edema of……..on overnight wear
Correct Answer: A. 4%
5. If a cornea retrieved from a crematorium disqualifies for optical transplant in that the polymegathism is 80% of total endothelial. We can do all of the following to this tissue except
Correct Answer: D. discard it in a safe place
6. The poor candidate for eye donation
Correct Answer: C. Suspected social behavior
7. Normal indoor office environment should have a luminance of
Correct Answer: B. 300-500 Lux
8. A CR-39 prism shifts an object by 8 degrees. The apical angle of this prism should approximate to:
Correct Answer: D. 16 degrees
9. One is false about bifocals
Correct Answer: B. Blended bifocals and fused bifocals terms can be used interchangeably.
10. One of the following seems the most feasible age criteria to be a cornea donor (death at:)
Correct Answer: A. Birth-100 years
11. Hospital Cornea Retrieval Program from Nepal Eye Bank was started in
Correct Answer: C. 2013
12. Which portion of the visible spectrum of light is particularly harmful to the retina?
Correct Answer: B. 440-450 nm
13. Hospital Cornea Retrieval Program (HCRP) in Nepal, an initiative to collect cornea from the general hospitals where death toll is high, was started in:
Correct Answer: A. 2013
14. The corneal tissue would not be worth for optical transplantation if the endothelial count is below
Correct Answer: A. 2000 / sq mm
15. Which disease warrants an excellent prognosis in penetrating keratoplasty?
Correct Answer: A. Keratocounus
16. Which sunwear filter does not taint the perception of natural colors?
Correct Answer: D. Neutral density filters
17. Find out the correct tube length of a Galiliean telescope whose objective and eyepiece are of forty and twenty diopters respectively.
Correct Answer: B. 2.5cm
18. Which of the following materials would you least prefer to recommend for a typical sportswear?
Correct Answer: C. CR-39
19. One among the following is false about the Krimsky test
Correct Answer: C. Estimated amount of prism is kept in the front of fixating eye
20. Nepal Eye Bank was established in
Correct Answer: B. 1994
21. False one is
Correct Answer: D. Saccadic eye movements have the capacity for speeds up to 100 degrees/second
22. These lenses incorporate a reading or near segment located eccentrically. These lens move on the cornea in such a way that the wearer views distance and near through the appropriate segment at the appropriate time. To be effective, the contact lens must translate upwards on the cornea when eyes look down to view near objects. As the design is rotationally asymmetric, lens must remain correctly at all times. All points make a case for
Correct Answer: D. Alternating vision contact lenses
23. Coefficient of variation in specular microscopy measures which of the following endothelial attributes:
Correct Answer: A. Polymegathism
24. The first surgeon who performed the penetrating keratoplasty in Nepal is
Correct Answer: C. Dr. ND Joshi
25. The ghost images seen in high power spectacles are the product of
Correct Answer: A. Internal reflection
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