Past Part 1 MRCOphth: 3
1. Vitamin B12:
a. absorption affected in achlorhydria
b. absorption requires intrinsic factor synthesized by body of stomach
c. deficiency occurs if the parietal cells are lost
d. deficiency causes hypersegmentation of the neutrophil nucleus
e. increased mean cell volume of the erythrocytes occurs in deficiency

2. The following antibiotics inhibit cell wall synthesis:
a. vancomycin
b. gentamicin
c. polymyxin
d. sulphonamides
e. cephalosporin

3. Lid tumours with malignant potential include:
a. neurofibroma
b. basal cell papilloma
c. senile keratosis
d. keratoacanthoma
e. solar keratosis

4. Corneal dystrophy containing amyloid include:
a. Avellino dystrophy
b. lattice dystrophy
c. granular dystrophy
d. macular dystrophy
e. Schyneder dystrophy

5. Saccadic eye movements:
a. may be vertical
b. may be torsional
c. may occur during sleep
d. the velocity may be voluntarily controlled
e. maximum velocity is 2000 per second

6. The following structures are situated in the dorsal midbrain:
a. nucleus of Cajal
b. nucleus of the posterior commissure
c. rostral interstitial nucleus of the medial longitudinal bundle
d. third cranial nerve nucleus
e. Edinger-Westphal nucleus

7. The following are are mesodermal in origin:
a. the dilator muscle of the iris
b. the iris stroma
c. the ciliary muscle
d. the ciliary epithelium
e. levator palpebrae superioris

8. Extraocular muscles:
a. have a sensory nerve supply
b. have microscopic appearance similar to striated muscles
c. lateral rectus is supplied in part by the lacrimal artery
d. inferior rectus is supplied in part by the infra-orbital artery
e. the lateral rectus has the smallest muscle mass

9. The following are true about enzymes:
a. cyclooxygenase converts leucotriene into arachidonic acid
b. aldose reductase converts glucose to sorbitol
c. aldose reductase converts galactose to dulcitol
d. tyrosinase converts DOPA to dopqauinone
e. galatose kinase converts galactose-1-phosphate to glucose-1-phosphate

10. Corynebacterium:
a. is Gram positive coccus
b. are a constituent of the normal commensal population in the conjunctival sac
c. causes membranous conjunctivitis
d. is a recognized cause of phlyctenular conjunctivitis
e. is widely resistant to antibiotics

More MCQs