Question 1

The action of superior rectus is:&#10;A)Elevation, intorsion, abduction&#10;B)Elevation, intorsion, adduction&#10;C)Elevation, extorsion, adduction&#10;D)Elevation, extorsion, abduction.

Accepted Answer

The superior rectus muscle primarily elevates the eye, but also contributes to intorsion (rotation of the top of the eye towards the nose) and adduction (movement of the eye towards the midline).

Question 2

The action of inferior oblique is:&#10;A)Depression, extorsion, abduction&#10;B)Depression, extorsion, adduction&#10;C)Elevation, extorsion, adduction&#10;D)Elevation, extorsion, abduction

Accepted Answer

The inferior oblique muscle is responsible for elevating the eye, extorting it (rotating the top of the eye away from the nose), and abducting it (moving it away from the midline).

Question 3

The only extraocular muscle which does not arise from the apex of the orbit is:&#10;A)Superior rectus&#10;B)Superior oblique&#10;C)Inferior oblique&#10;D)Inferior rectus

Accepted Answer

The inferior oblique muscle does not originate from the apex of the orbit; instead, it originates from the maxillary bone, near the anterior margin of the orbit.

Question 4

In concomitant squint:&#10;A)Primary deviation > Secondary deviation&#10;B)Primary deviation < Secondary deviation&#10;C)Primary deviation = Secondary deviation&#10;D)None of the above

Accepted Answer

In concomitant squint, the primary deviation (when the non-fixing eye is deviated) is equal to the secondary deviation (when the fixing eye is deviated).

Question 5

In paralytic squint, the difference between primary and secondary deviation in the gaze of direction of the paralytic muscle:&#10;A)Increases&#10;B)Decreases&#10;C)Remains the same&#10;D)none

Accepted Answer

In paralytic squint, the difference between primary and secondary deviation increases. This is because when the eye with the normal muscle (non-paralytic eye) is fixing, it requires less effort to maintain fixation, resulting in a smaller deviation (primary deviation). However, when the eye with the paralytic muscle is attempting to fixate, the normal eye (now acting as the fellow eye) has to exert more effort to compensate for the lack of movement from the paralytic muscle, leading to a larger deviation (secondary deviation).

Question 6

In grades of binocular vision; grade 2 is:&#10;A)Simultaneous macular vision&#10;B)Fusion&#10;C)Stereopsis&#10;D)none

Accepted Answer

Grade 2 of binocular vision is fusion, which is the ability to merge two images, one from each eye, into a single image.

Question 7

The best treatment for amblyopia is:&#10;A)Orthoptic exercises&#10;B)Occlusion&#10;C)Surgery&#10;D)Best treat after age 10 years

Accepted Answer

Occlusion therapy, which involves covering the stronger eye to force the use of the amblyopic (weaker) eye, is considered the most effective treatment for amblyopia, especially in children. This method helps stimulate vision in the amblyopic eye and aids in visual development.

Question 8

All the following are true about retina, except:&#10;A)Composed of 10 separable layers&#10;B)There is a loose attachment between neurosensory and Retinal pigment epithelium&#10;C)The Fovea is not supplied by the central retinal artery&#10;D)Soft exudates are swollen axons of ganglion cells

Accepted Answer

The answer of All the following are true about retina,...

Question 9

Cause of blindness in HIV (Human immunodeficiency virus) patient; one is true:&#10;A)Cotton wool spots&#10;B)HIV microangiopathy&#10;C)Cytomegalovirus retinitis&#10;D)Kaposi sarcoma

Accepted Answer

Cytomegalovirus (CMV) retinitis is a significant cause of blindness in HIV patients, especially in those with advanced disease or low CD4 counts. It is a viral infection of the retina that can lead to severe vision loss if not treated promptly.

Question 10

Pseudophakia is the loss of:&#10;A)Accommodation&#10;B)Conversion&#10;C)Saccadic eye movements&#10;D)Contrast sensitivity

Accepted Answer

Pseudophakia refers to the condition of having an artificial lens implanted in the eye, usually after the removal of a cataract. This can lead to the loss of accommodation, which is the eye's ability to change focus from distant to near objects.

Question 11

All are used for treatment of myopia, except:&#10;A)Convex lenses&#10;B)Concave lenses&#10;C)Lens refractive surgery&#10;D)LASIK

Accepted Answer

The answer of All are used for treatment of myopia,...

Question 12

One of the following is indicative of past optic neuritis in multiple sclerosis patients:&#10;A)Mild Relative afferent pupillary defect&#10;B)Internuclear ophthalmoplegia&#10;C)Nystagmus&#10;D)Diplopia

Accepted Answer

The answer of One of the following is indicative of...

Question 13

Emmetropia is:&#10;A)Parallel rays of light brought on retina&#10;B)Visual acuity of 6/6&#10;C)Parallel rays of light brought before retina&#10;D)(A) & (B)

Accepted Answer

The answer of Emmetropia is:&#10;A)Parallel rays of light brought on...

Question 14

One of the following does not cause exophthalmos:&#10;A)Orbital varix&#10;B)Optic nerve tumor&#10;C)Blow out fracture&#10;D)Orbital cellulitis

Accepted Answer

The answer of One of the following does not cause...

Question 15

One of the following is not a cause of entropion:&#10;A)Facial nerve palsy&#10;B)Congenital&#10;C)Cicatricial pemphigoid&#10;D)Conjunctival scaring

Accepted Answer

The answer of One of the following is not a...

Question 16

Which one is responsible for strongest refraction in the eye:&#10;A)Tear film&#10;B)Cornea&#10;C)Lens&#10;D)Vitreous

Accepted Answer

The answer of Which one is responsible for strongest refraction...

Question 17

Chronic blepharitis is associated with all, except:&#10;A)Ectropion&#10;B)Eyelid margin ulceration&#10;C)Red eye&#10;D)Obstruction of meibomian glands

Accepted Answer

The answer of Chronic blepharitis is associated with all, except:&#10;A)Ectropion&#10;B)Eyelid...

Question 18

Carotid-cavernous sinus fistula causes all the following, except:&#10;A)Bruit over globe&#10;B)Pulsatile tinnitus&#10;C)Proptosis&#10;D)Scleral veins congestion

Accepted Answer

The answer of Carotid-cavernous sinus fistula causes all the following,...

Question 19

All the following are risk factors for bacterial keratitis, except:&#10;A)Chalazion&#10;B)Contact lenses&#10;C)Trauma&#10;D)Dry eye

Accepted Answer

The answer of All the following are risk factors for...

Question 20

About trichiasis; all the following are true, except:&#10;A)Signs of dry eye&#10;B)Iris atrophy&#10;C)Corneal opacity&#10;D)Backward misdirection of eye lashes

Accepted Answer

The answer of About trichiasis; all the following are true,...

Question 21

All the following are true about herpetic infection, except:&#10;A)A Dendritic ulcer is characteristic&#10;B)Primary infection is asymptomatic&#10;C)Caused by Herpes simplex virus type 2&#10;D)Steroids may be used for treatment

Accepted Answer

The answer of All the following are true about herpetic...

Question 22

All the following are used in treatment of open angle glaucoma, except:&#10;A)Steroids&#10;B)Parasympathomimetics&#10;C)Betablockers&#10;D)Alpha agonists

Accepted Answer

The answer of All the following are used in treatment...

Question 23

All the following are true about open angle glaucoma, except:&#10;A)Commonly causes headache&#10;B)Optic disc cupping&#10;C)Peripheral visual loss&#10;D)Medical treatment is the first line of treatment

Accepted Answer

The answer of All the following are true about open...

Question 24

All the following are signs of keratoconus, except:&#10;A)Thickening of central cornea&#10;B)Corneal thinning, especially in the inferior cornea&#10;C)Munson sign&#10;D)Prominent corneal nerves

Accepted Answer

The answer of All the following are signs of keratoconus,...

Question 25

All the following are used for the treatment of keratoconus, except:&#10;A)LASIK&#10;B)Intracorneal rings&#10;C)Contact lenses&#10;D)Keratoplasty

Accepted Answer

The answer of All the following are used for the...

Deck 5: Eye Anatomy and Disorders