a. is a free living amoeba in tap water which
can cause cornea ulcers
b. is killed by antibiotics
16.
The henle fibre is formed by
a. Outer plexiform layer
b. Inner plexiform layer
c. Inner nuclear layer
d. Outer nuclear layer
17.
The anterior ethmoid foramen is found
a. between frontal and ethmoid bone
b. within frontal bone only
c. between ethmoid bone and lacrimal bone
d. within sphenoid bone
18.
Endothelium is held in the base by
a. desmosomes
b. hemidesmosomes
19. Regarding sterilization at 121 degrees
celsius at 100 kpa requires
a. 3 minutes
b. 10 minutes
c. 60 minutes
d. 100 minutes
20. Culture for toxoplasmosis
a. Chocalate agar
b. McConkey
c. Thayer Martin
21. Culture for acanthoemaba
a. Blood agar
b. McConkey agar
c. Nutrient agar with E.coli overlay
22.Superoxide dismutase catalyzes the dismutation of superoxide to
a. hydrogen peroxide
b. water
c. catalase
d. peroxidase
23. Orbital septum inserts into
a. Troclea
b. anterior of levator aponeurosis
c.
d.
24.
Allowing 5 minutes between two eye drops works on the principle of
a. Pharmacokinetics
b. Pharmacodynamics
c. Bioavailability
d.
24.
The nerve that passes close to the petrous part of the temporal bone is
a. V nerve
b. VI nerve
c. III nerve
d. IV nerve
26. The cornea hydration is maintained by the
following in the endothelium
a. Na K ATPase pump
b. Na Bicarbonate pump
c. Passive diffusion
d. introcular pressure
27.
Regarding the superior field of vision
a. Subtended by 80 degrees of vertical vision
b. is not affected by an upper lid pathology
c. is more sensitive than the inferior field of
vision
d.
28.
The exit of the VII nerve is
a. Stylomastoid foramen
b. Jugular foramen
c. Foramen ovale
d. Foramen rotundum
29.
Regarding toxoplasmosis
a. is an obligate intracellular organism
30.
Acyclovir works by
a. activating thymidine kinase
b. inhibiting DNA polymerase
31.
Erythromicin functions by
a. inhibiting ribosomal synthesis
b. inhibiting cell wall synthesis
c. inhibiting DNA polymerase
32.
The anterior chamber depth is approximately
a. 1 mm
b. 3 mm
c. 5 mm
d. 6 mm
33.
The most abundant muscles in the ciliary body is
a. Longitudinal muscles
b. circular muscles
c. oblique muscles
d. striated muscles
34.
Regarding the ligament of lockwood
a. condensation of muscle sleeves of inferior
rectus and inferior oblique
b. forms a band in the floor of the periosteum
c.
d.
35.
The muscle fibres which are only found in extraocular muscles is
a. tonic fibres
b. twitch fibres
c. fast fibres
d. slow fibres
36.
The course of the 3rd nerve is
a. penetrates the arachnoid between the free and
attached borders of the tentorium cerebelli
b.
c.
d.
34.
The fourth nerve exits at
a.inferior to the inferior colliculus
b.superior to superior colliculus
c.
d.
35.
Regarding the vitreous
a. develops from neuroectoderm
b. 70 % water
c. firmly attached to posterior surface of lens
d.
36.
The canal of schlemm is lined by
a. single layer of fenestrated endothelium
b. single layer of non-fenestrated endothelium
joined by tight junctions
c.
d.
37.
Regarding mitocondria inheritance
a. both male and female members will inherit the
trait if from the mother
38.
The main type of collagen in the stroma is
a. type 1
b. type 2
c.type 3
d. type 4
39. A
child has retinal dystrophy, his father also has it , what mode of inheritance
(X-linked dominant)
40. A
child has an ocular disease. On further questioning, his maternal grandfather
also has the same illness. The most likely form of inheritance is
a. X linked recessive
b. X linked dominant
c. autosomal recessive
d. autosomal dominant
41.
Down's syndrome is associated with
a. Trisomy 21
b. Trisomy 13
c. Trisomy 18
d.
42.
Regarding Botulinum toxin
a. it's effect on eyelids is irreversible
b. available in powder form which can be
reconstituted
c.
d.
43.
The action of Botulinum toxin
a. blocks the release of presynaptic
acetylcholine
b. binds reversibly with acetylcholine receptors
c. binds irreversibly with acetylcholine
receptors
d.
44.
Regarding the medial rectus muscle
a. 6.5 mm from limbus
b. ineverted on it's nasal side
c. ineverted by the 5th nerve
d. has the same origins as the inferior oblique
45.
During the depolarization in a muscle, the following happens
a. increase in the levels of calcium
b. reduction of the levels of calcium
c. contraction of the myosin bands
d. contraction of actin
46. The following is a direct acting cholinergic
agonist
a. Pilocarpine
b. Phenylephrine
c. ThymoxamiTne
d. Epinephrine
47.
Prostaglandin analogues work by
a. increasing uveoscleral outflow
b. increasing trabecular outflow
c. decrease aqueous production
d.
48.
Which chromosome / gene defect is associated with Retinoblastoma
a. Chromosome 11
b. Chromosome 13
c. Chromosome 18
d.
PAX 6
49.
Regarding down's syndrome
a. incidence increased with increasing maternal
age
b.
50.
Regarding alpha crystalins
a. not found elsewhere in the body besides the
lens
b. remains stable throughout life
c.
d.
51. Corneal
endothelium has a density of
a. 6000 cells/mm2
b. 3500 cells/ mm2
c. 2000 cells/mm2
d. 1500 cells/mm2
52.Which of the bone of the orbit has cartilage component?
a. Zygoma
b. Sphenoid
c. Frontal
d. Maxilla
53.
The grey line corresponds with the
a. mucocutaneous junction
b. ciliary hair
c.
54.
Scleral rupture is most common in
a. at the limbus
b. radially at the insertion of the rectus
muscles
c. circumferentially around the insertion of the
rectus muscles
d. posteriorly at the sclera pole
55. Devitalized tissues are best stained with
a. Fluorescein stain
b. ICG
c. Rose bengal
d.
56.
Aqueous is drained through the endothelium of canal of schlemm by
a. micropynocitic vesicles and giant vacuoles
b. through fenestrations
57.
Damage to the visual radiation in the anterior temporal lobe gives rise to
a. upper homonymous quadranopia
b. homonymous hemianopia
c. bitemporal hemianopia
d.
58.
Regarding edinger westphal nucleus
a. was first described by edinger in westphal
b. is preganglionic
c.
d.
59.
Sensation from the upper part of the face has tracts to the
a. mesencephalic nucleus
b. main sensory nucleus
c. spinal nucleus
d. trigeminal ganglion
60.
Regarding the development of the lens
a. happens around month 1-2 of gestation
b. happens in the first 2-3 weeks
c. happens at 5 months
d. happens after 6 months
61. Vitreous is most firmly attached to
a. posterior part of lens
b. macula
c. equator
d. around the optic disc
62.
Most colour vision defects are caused by
a . S cone mutations
b. L and M cone mutations
63.
Bioavailability of a topical application is increased in
a. a defect in the cornea
b. increasing the amount of topical medication
c.
64. Horizontal cells nucleus are found in
a. inner nuclear layer
b. outer nuclear layer
c. outer plexiform layer
d. inner plexiform layer
65. Regarding the lipid layer of the tear film
a. contains polar lipids which are hydrophobic
b. contain cholesterol and wax esters
c. contain non charge compounds
d. is the innermost layer
66.
The most abundant Ig in tears is
a. Ig A
b. Ig D
c. Ig E
d. Ig G
67.
The zonular fibres are made of
a. collagen
b. hyalarunan
c. fibrillin
d. proteoglycans
68. Zonular fibres arise from
69. The following muscles is attached to the
scleral spur
a. Longitudinal muscle
b. circular muscle
c. radial muscle
d. iris dilator muscles
70.
The conjunctival epithelium.
a. mainly supplied by ciliary arteries
b. has B and T lymphocytes in relation
with CALT
c. is a single layer of epithelium
71. The obicularis oculi muscle is innervated
by
a. III nerve
b. VI nerve
c. VII nerve
d. V nerve
72.
The vortex veins drain the
a. Iris
b. Retina
c. extraocular muscles
d. cornea
73.
The anterior ciliary arteries supply all the rectus muscles in pairs except
a. lateral rectus
b. medial rectus
c. inferior rectus
d. superior rectus
74.
Regarding fast twitch fibres
a. innverated en plaque
b. innervated en grappe
c. mainly around the orbital area
d. nerve endings centrally
75.
The crypts of the limbus are in close association with
a. Langerhans cells
b.
c.
d.
76.
MMP 2
a. dependent on Zn
b.
c.
d.
77.
Bacterial mutation is caused by changes in
a. plasmid
b. DNA
c.
d.
78.
The non-pigmented layer of the iris is in continuation with
79.
The following are a part of the anterior chamber angle
80. The incidence of down's syndrome is
a. increased to 50 % for the second child if the
first child has it
b. increasing with increasing maternal age
c. increasing with increasing paternal age
d.
81. Regarding the contents of the acqueous in
comparison to plasma
a. has a higher content of protein
b. has a higher ascorbic acid level
d. has a higher potassium level
e. has a higher sodium level
82. Regarding the superior oblique muscle
a. arises from the annulus of zinn
just above and medial to the optic
foramen
b. has no tendon
83. The inferior oblique muscle originates from
a. just lateral to the nasolacrimal duct
b. frontal bone
c. ligament of lockwood
84. The lacrimal cannaliculi
a. is lined by a single layer of cuboidal cells
b. inferior punctum is more medial
than the superior punctum to the medial
canthus
c. in 90% of the people the cannaliculi join to
form a common cannaliculus
85.
The lens capsule
a. is uniform
b. is thicker posteriorly
c. is inelastic
d. is derived from ectoderm
86. The lacrimal gland fossa is made up of the
following bone/ bones
87.The floor of the orbit is formed by the
following bones/bone
88. The anterior posterior diameter of the adult
is approximately:
89. The forehead area is innevervated by:
a. corticobulbar fibres from both cerebral
hemispheres
b. corticospinal fibres from both cerebral
hemispheres
90. The lens
a. contributes 60D of the focusing power of
the eye
b. primary lens fibres persist for life
c. lens capsule is made of type IV collagen
91. Ciliary ganglion contains the following
92. Lactic acid accumulating in the cornea has
the following consequence
93. Regarding the corneal stroma
a. derived from the neural crest
b. mainly type 2 collagen
c. collagen fibrils are arranged similarly to
sclera
94. The corneal stroma's primarily derives its
glucose from
95. The action of the superior rectus is
a. elevates, adducts, intorts
b. elevates, abducts, intorts
c. depresses, adducts, extorts
d. depresses, abducts, extorts
96. The basal lamina
of the inner layer of the optic cup differentiate into
a. Internal limiting membrane
b. Nerve fiber layer
c. External limiting membrane
d. Bruch's membrane
97.
Sympathetic fibres to the iris synapse at
a. ciliary ganglion
b. stellate ganglion
c. pterygopalatine ganglion
d. superior cervical ganglion
98. Maximal number of axon in the optic
nerve is achieved during
a. 5 weeks gestation
b. 15 weeks gestation
c. 40 weeks gestation
d. Anytime at birth
99.
The primary blood supply to the eyelids are:
a .opthalmic
arteries
b.
marginal arteries
c.
facial artery