Optometry and Ophthalmology Mcq part-01


1. Which cells of the retina are responsible for scotopic vision?

  1. Bipolar cells
  2. Rod cells✓
  3. Ganglion cells
  4. Cone cells

Human vision is enabled by three primary modes:
Photopic vision: Vision under well-lit conditions, which provides for color perception,
and which functions primarily due to cone cells in the eye.
Mesopic vision:*A combination of photopic vision and scotopic vision in low lighting,
which functions due to a combination of rod and cone cells in the eye.
Scotopic vision: Monochromatic vision in very low light, which functions primarily due to rod cells in the eye.

2. Which part of the retina has the greatest sensitivity to light?

  1. the optic disc
  2. macula lutea
  3. the choroid
  4. fovea centralis✓

3. In which colour ranges do the three pigments in the retina have their major
sensitivities?

  1. green, red and blue.✓
  2. red, blue and yellow.
  3. green, yellow and red.
  4. green, yellow and blue.

4. The approximate volume of the orbit is:

  1. 60mL
  2. 10mL
  3. 30mL✓
  4. 45mL

5. All of the following are part of uvea except:

  1. Pars plicata
  2. Pars plana
  3. Choroid
  4. Schwalbe’s line✓

6. Lens develops from

  1. neural ectoderm
  2. surface ectoderm✓
  3. optic vesicle
  4. all of the above

7. Retina develops from

  1. surface ectoderm
  2. mesoderm
  3. optic vesicle✓
  4. embryonic fissure

8. Muscles controlling pupil arise from

  1. mesoderm
  2. ectoderm✓
  3. endoderm
  4. none of the above

9. The avascular structure of eye is

  1. choroid
  2. lens✓
  3. conjunctiva
  4. ciliary body

10. Aqueous humour is secreted by

  1. angle of anterior chamber
  2. choroid
  3. ciliary body✓
  4. iris

11. The mucoid layer of Tear film is produced by

  1. Meibomian glands
  2. Main lacrimal gland
  3. Accessory lacrimal glands
  4. Globlet cells✓

The mucoid layer lies adjacent to the corneal epithelium is produced by the goblet cells in theconjunctival epithelium. The watery (aqueous) layer is produced by the main lacrimal gland in the superotemporal part of the orbit and accessory lacrimal glands found in the conjunctival stroma. Lipid layer is the oily layer (superficial layer of the tear film) produced by the meibomian glands (modified sebaceous glands) of the eyelid
margins with some lipids from the glands of Zeis and Moll.

12. Main component of human lens

  1. Water✓
  2. Protein
  3. Collagen
  4. Ascorbic acid

The lens is comprised of approximately 65% water and 35% protein.

13. During accommodation AC depth will

  1. Increase
  2. Decrease✓
  3. Remain same
  4. None

14. During accommodation Corneal curvature will

  1. Increase
  2. Decrease
  3. Remain same✓
  4. None

15. The junction of cornea and sclera is known as

  1. Trabecular meshwork
  2. ciliary body
  3. pupil
  4. limbus✓

16. The anterior and posterior chamber of the eye are separated by:

  1. Anterior Lens capsule
  2. Posterior Lens capsule
  3. Iris diaphragm✓
  4. Aqueous humour

17. The normal corneal diameter in adults ranges between:

  1. 10-11 mm
  2. 11-12 mm✓
  3. 12-13 mm
  4. 09-10 mm

18. Number of intraocular muscles in the eye

  1. 2
  2. 3✓
  3. 4
  4. 6

19. The globe is less protected hence vulnerable to injury from:

  1. Superiorly
  2. Laterally✓
  3. Inferiorly
  4. Posteriorly

20. Muscles controlling pupil arise from

  1. mesoderm
  2. ectoderm✓
  3. endoderm
  4. none of the above

21 The tear film consist of following except:

  1. Lipid.
  2. Mucus.
  3. Salts.
  4. Water.
  5. Glucose.✓

22 The weakest bony orbital wall is:

  1. Lateral.
  2. Medial.✓
  3. Floor.
  4. Roof.

23.Bruch’s membrane is located on

  1. Cornea
  2. Conjunctiva
  3. Iris
  4. Retina✓

24 The main veins draining the choroids is:

  1. Orbital veins.
  2. Vortex veins.✓
  3. Posterior ciliary veins.
  4. Central retinal vein.

25 Function of ciliary body

  1. Accommodation
  2. Aqueous production
  3. Both✓
  4. None

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