Past MCQs  (year unknown)
1. Structures that penetrate the orbital septum:
a. levator aponeurosis
b. branches of facial vein
c. supratrochlear nerve
d. frontal nerve
e. lacrimal nerve

2. In the lens:

a. the concentration of potassium is higher than sodium
b. glutamate concentration is higher than in the aqueous
c. aspartate is a by-product of lens metabolism
d. sorbitol is raised in diabetes mellitus
e. most metabolism is anaerobic

3. Questions relates to the values of electrolytes and proteins in : anterior chamber, posterior chamber and vitreous

4. Entopic phenomenon results from:

a. red blood cells in the retinal vessels
b. palpation of the eyeball
c. posterior vitreous detachment
d. eyelashes
e. debris in the tear film

5. Suxamethonium:

a. increases the intraocular pressure
b. is contraindication in patient on ecothiopate
c. increases the serum potassium concentration
d. acts on the nicotinic receptors
e. causes depolarizing paralysis

6. Thiopentone:

a. the duration of action is 3 to 5 minutes
b. crosses blood brain barrier
c. has a high lipid solubility
d. its action is stopped through redistribution
e. causes myocardial depression

7. Indomethacin:

a. inhibits the synthesis of cycloxygenase
b. reduces the production of prostaglandins
c. causes water retention
d. causes interstitial nephritis
e. causes gastric irritation

8. Prostaglandins:

a. breaks down the blood ocular barrier
b. is synthesized from the lipid found in the cell membrane

9. Fluorescein :

a. does not leak from the choriocapillaris
b. does not leak from normal retinal vessels
c. is mainly excreted from the urine
d. has a molecular weight of 50000
e. absorbs light at 600nm

10. Nasolacrimal duct:

a. canalizes from the nose to the eye
b. develops from mesoderm
c. lacrimal canaliculi canalize from medial to lateral
11. Lacrimal gland:
a. there are 12 ducts open into the fornix
b. plasma cells are found around the acini in normal patients
c. myoepithelial cells are found along the glands
d. the palpebral part is related anterior to the orbital septum
e. is a tubuloacinar gland
12. Questions on the glands of Moll

13. Questions on the glands of Wolfring

14. Stability of the tear film is due to:

a. secretion of meibomian glands
b. mucin
c. secretion of glands of Zeiss
d. glycocalyx of cornea
e. blinking

15. Tarsal plates. Question on their dimensions height and width

16. Posterior triangle of the neck:

a. contains the jugular veins
b. anterior border is formed by the sternomastoid
c. contains the accessory nerves

17. The parasympathetic and sympathetic supply to uveal tissue are found in:

a. the inferior division of third nerve
b. the superior division of third nerve
c. fifth cranial nerve
d. seventh cranial nerve
18. Branches of the maxillary nerve:
a. supplies the nose
b. supplies the conjunctiva
c. forms the zygomaticofacial nerve

19. Cornea:

a. the anterior radius is 7.8 mm
b. the posterior radius is 7.0 mm in an average person
c. the vertical diameter is greater than the horizontal diameter
d. the Bowmans layer is one quarter of the total thickness

20. In the ciliary epithelium:

a. the base of non-pigmented layer apposed to the pigmented layer
b. the non-pigmented layer is responsible for the production of aqueous humour

21. Lignocaine:

a. has vasoconstrictor effect
b. has a duration of 2 to three hours
c. the onset of action is 5 minutes

22. Visual evoked potential:

a. is used to estimate the visual acuity
b. the amplitude is reduced in recovered retrobulbar neuritis

23. The Bruch's membrane is made up of:

a. basal lamina of RPE
b. basal lamina of choriocapillaris
c. has tight junction s with the RPE

24. Aqueous humour:

a. the has a higher concentration of lactic acid than in plasma
b. the glucose levels is 80% of the plasma levels
c. has a volume of 0.2 mls
d. the rate of formation is about 2.5ul per minute

25. The insertion of the levator aponeurosis include:

a. the orbital roof
b. orbital septum
c. superior rectus
d. tarsal conjunctiva
e. anterior tarsal plate

26. ERG:

a. is affected by amblyopia
b. is affected by optic nerve damage
c. is done on anaesthetized eye

27. Glycosylated Hb concentration:

a. is related to recent control of plasma glucose level
b. is an indicator of renal failure
c. is not accurate an indicator of glucose control in patients with sickle cell anaemia
d. the ideal level should be 5% in diabetic patients

28. In the lens:

a. the capsule is secreted by the epithelium
b. the protein content accounts for more than 30% of the weight
c. alpha crystalline can leak into the aqueous in normal person

29. In amblyopia:

a. the binocular function is abnormal
b. there is a decrease in the number of photoreceptors
c. has not effect on the EOG

30. Vergences:

a. is required for stereoscopic vision
b. has a rapid movement compared with saccades

31. Binocular vision:

a. only occurs along the horopter
b. only occurs within the Pannums functional space

32. The following are true:

a. the lateral geniculate body is linked to area 17, 18 and 19
b. there is a link between the superior colliculus and area 17 18 and 19
c. the macular is represented along the calcarine fissure

33. Toxoplasmosis choroiditis:

a. there is an increased incidence in HIV
b. can be treated with vancomycin
d. protozoan can be cultivated form the lesion

34. Tetracycline:

a. chelates calcium
b. acts on 30S
c. is a broad spectrum antibiotic
d. is bacterostatic

35. Anticholinesterases:

a. used in the treatment of myasthenia gravis
b. used to counter the action of tubocurarine
c. used to decrease lid retraction
d. used to reduce intraocular pressure

36. The following are true:

a. gangrene = necrosis + putrefaction
b. coagulative necrosis occurs in brain infarction

37. The wall of orbit:

a. the anterior floor is higher than the posterior floor
b. the lateral floor is higher than the medial aspect of floor
c. the medial wall is related to the sphenoid sinus

38. Cavernous sinus drains:

a. eyelids
b. orbit
c. spheno-parietal fossa
d. midbrain

40. Tear secretion is stimulated by:

a. stimulating the nasal mucosa
b. instillation of pilocarpine
c. tricyclic anti-depressants

41. Cardiac glycosides:

a. increases the intracellular calcium
b. causes depositions of crystals in the cornea
c. causes yellow vision

42. Neisseria:

a. an obligate anaerobe
b. Gram negative diplococcus
c. can be infected through contaminated bedding or dust

43. The tongue:

a. contains three extrinsic and two intrinsic muscle
b. is solely supply from the lingual artery
c. is divided in the middle by septum
d. contains thyroglossal tract
e. may contain parathyroid glands

44. Purkinje shift:

a. refers to change in luminosity from photopic to scotopic vision
b. is reduced in amblyopia

45. Proteoglycans:

a. composed of glucose and glycoaminoglycans
b. contains hyaluronic acid 
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