2. The surgical limbus of the eye:
a. is defined by Schwalbe's line
b. is posterior to the anatomical limbus
c. incision along which will pass in front of trabecular meshwork
d. incision along which will pass posterior to the canal of Schlemm
e. is anterior to the conjunctival limbus

3. The following are true about corneal ulcer:
a. those due to Morexella Liquefaciens usually give rise to severe hypopyon
b. with greenish exudate or hypopyon is a pathognomonic feature of Pseudomonas aeruginosa
c. if caused by pneumococcal usually spread from central to the periphery
d. hypopyon is sterile in bacterial corneal ulcer with intact Descemet's membrane usually have sterile hypopyon
e. hypopyon is sterile in fungal corneal ulcer with intact Descemet's membrane.

4. Pseudomonas aeruginosa is sensitive to:
a. carbenicillin
b. gentamicin
c. cefuroxime
d. ofloxacin
e. chloramphenicol

5. In treating CMV retinitis with foscarnet, the following complications may occur:
a. thrombophlebitis
b. hypercalcaemia
c. haematological side effect
d. cardiac arrhythmia
e. renal dysfunction

6. The following statements are true:
a. chloramphenicol will give rise to optic neuritis
b. visual field loss caused by ethambutol may improve 1 month after cessation of the drug
c. the severity of nystagmus due to phenobarbitol is not dose-related
d. chlorothiazide may give rise to xanthopsia
e. retinal artery thrombosis may be a complication of oral contraceptive pill

7. Actinomyces Israeli infection:
a. involve lacrimal sac
b. involve lung
c. is an aerobic coccobacilli
d. is  commensal of nasal cavity
e. involve ileocaecal region

8. Which of the following drugs may cause optic atrophy:
a. isoniazid
b. chloramphenicol
c. streptomycin
d. sulfonamide
e. rifampicin

9. Which of the following statement is correct:
a. most of the noradrenaline released from the sympathetic nerve vesicle is metabolized by the enzyme catechol--methyl transferase
b. adrenaline can penetrate the corneal epithelium well and decrease aqueous humour production
c. adrenaline may produce subepithelial deposit in conjunctiva
d. phenylepherine hydrochloride is both a  and b receptor agonist
e. isoproterenol may constrict conjunctival blood vessel
 

10. DNA virus include:
a. adenovirus
b. molluscum contagiosum
c. cytomegalovirus
d. measles
e. mumps virus

 

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