1. Diamox:
a. is excreted unchanged
in urine
b. is concentrated in iris and ciliary
epithelium
c. works in alkaline environment
d. crystallized in renal tubules
e. increases the respiratory rate
2. Systemic b-blocker:
a. should be avoided in
patients on verapamil
b. decreases intraocular pressure
c. increases the effect of potassium
supplement
d. can be given even if the patient
is on topical b-blocker
e. causes dry eye
3. Aqueous:
a. has a lower sodium concentration
in the anterior than posterior chamber
b. has a refractive index of 1.336
c. has a volume of about 1 ml in
the anterior chamber
d. supplements most of the nutrients
to the corneal epithelium
e. has an ascorbic acid concentration
which is 5 times that of the serum
4. Regarding the photoreceptor
outer segment:
a. the cone pigments differ
in opsin
b. phagocytosis occurs only in the
rod outer segment
c. abnormal phagocytosis of RPE
is a cause of some forms of retinitis pigmentosa
d. phagocytosis of the rod outer
segment is increased in darkness
e. there are joined together by
tight junctions
5. The following are known components
of cataract:
a. urate
b. haemosiderosis
c. oxalate crystals
d. calcium phosphate
e. creatinine crystals
6. Cholesterol crystals are
found in:
a. subretinal space in Coat's
disease
b. lipid keratopathy
c. disciform macular degeneration
d. lattice degeneration
e. synchysis scintillans
7. Morphea basal cell carcinoma:
a. is cystic
b. has a later presentation than
the nodular form
c. has a higher recurrence rate
after excision biopsy
d. contains pallasading of cells
e. contains fibrosis in the surrounding
tissue
8. Optic chiasm:
a. is anterior to the olfactory
bulb
b. in albinism has decrease crossing
of fibres
c. has a variable relationship to
the pituitary gland
d. supplied by anterior communicating
artery
e. forms part of the wall of the
third ventricle
9. Regarding CMV virus:
a. it is a RNA virus
b. it belongs to the same family
as Epstein-Barr virus
c. it is sensitive to acyclovir
d. it rarely caused retinitis in
HIV patients with normal CD4+ counts
e. it causes foetal abnormalities
if the mother acquires the infection during pregnancy
10. The following are causes
of hyperviscosity syndrome:
a. iron deficiency anaemia
b. multiple myeloma
c. hyperlipidaemia
d. sickle cell anaemia
e. haemorrhagic shock
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