1. Retinal pigment epithelium
is responsible for:
a. retinal attachment
b. storage of vitamin A
c. production of Bruch's membrane
d. absorption of ultraviolet light
e. the a-wave of electroretinogram
2. Intraocular pressure:
a. varies seasonably
b. varies diurnally and is highest
in early morning
c. drops promptly during the onset
of sleep and anaesthesia
d. decreases with age in Caucasian
e. varies with tachycardia
3. Pituitary stalk lesion
is associated with:
a. severe diabetes mellitus
b. hypothyroidism
c. decreased secretion of luteinizing
hormone
d. decreased prolactin secretion
e. low blood pressure
4. Giant cells:
a. has phacocytic property
b. are made up of multi-nucleated
aggregate of macrophage
c. are found in xanthogranuloma
d. occur in acute inflammation
e. are found in temporal arteritis
5. Blinking reflex:
a. is the reflex to be abolished
in general anaesthesia
b. is absent before 9 months of
age
c. does not involved the visual
cortex
d. requires normal trigeminal nerve
function
e. is impaired in facial nerve palsy
6. Regarding the tear film:
a. Ig A is dominant and
is formed in concentration about 2X that of IgG
b. Ig A of tear contains a secretary
piece of molecule
c. lysozyme in human tear is greater
than any other body fluid except the
saliva
d. corneal injury produces an acidic
tear film
e. lysozyme concentration in Sjogren's
syndrome is a useful diagnostic test
7. Regarding the cerebrospinal fluid:
a. the normal volume is 20ml
b. the normal pressure is 30mmHg
c. it is formed mainly through ultrafiltration
d. it surrounds the spinal cord
as low as the second lumbar vertebrae
e. oligoclonal Ig G band in the
cerebrospinal fluid can be used to support
the diagnosis
of multiple sclerosis
8. The levator superioris
muscle:
a. arises from the lesser
wing of the sphenoid
b. is supplied by the superior branch
of the oculomotor nerve
c. is the longest muscle within
the orbit
d. becomes levator aponeurosis when
it extends beyond the Whitnall
ligament
e. has the same embryologic origin
as the superior rectus
9. In Horner's syndrome:
a. the ptosis may be abolished
with topical phenylepherine
b. the intraocular pressure is decreased
c. the conjunctival vessels become
dilated
d. 4% cocaine can dilate the pupil
e. the reaction to light and accommodation
is impaired
10. In miosis:
a. occurs in long-standing
Adie's pupil
b. increases the depth of focus
c. in the elderly is caused by a
decrease in sympathetic outflow
d. pin-point pupils caused by pontine
infarction do not respond to light
e. pupils are relatively miosed
in during sleep
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