Ophthalmology MCQ on disease of cornea

 OPHTHALMOLOGY MCQ ON THE DISEASE OF CORNEA

OPHTHALMOLOGY MCQ ON THE DISEASE OF CORNEA



1. The organism which can invade the intact corneal epithelium and produce purulent corneal ulcer is:

A. Neisseria meningitidis

B. Pseudomonas pyocyanea

C. Pneumococcus

D. Streptococcus haemolyticus


2. Hypopyon ulcer may be produced by:

A. Pneumococcus

B. Pseudomonas

C. Gonococcus

D. All of the above


3. Ulcus serpens is caused by:

A. Pneumococcus

B. Pseudomonas

C. Gonococcus

D. All of the above


4. All are the causes of a non-healing corneal ulcer except:

A. Raised intraocular pressure

B. Associated iridocyclitis

C. Chronic dacryocystitis

D. Diabetes mellitus


5. Marginal catarrhal corneal ulcer is caused by: 

A. Staphylococcus

B. Moraxella

C. Haemophilus

D. All of the above


6. Satellite lesions in the cornea may be seen in:

A. Fungal corneal ulcer

B. Bacterial corneal ulcer 

C. Viral corneal ulcer

D. None of the above


7. Immune ring in the cornea is a feature of:

A. Bacterial corneal ulcer

B. Fungal corneal ulcer

C. Ring ulcer of the cornea

D. Disciform keratitis


8. Viral infections usually cause:

A. Conjunctivitis

B. Kerato conjunctivitis

C. Keratitis

D. Blepharo conjunctivitis


9. Is not the clinical presentation of herpes simplex keratitis:

A. Diffuse stromal necrotic keratitis

B. Punctate epithelial keratitis

C. Disciform keratitis

D. Nummular keratitis


10. Ocular complications in herpes zoster ophthalmicus usually appear:

A. At the subsidence of skin eruptions

B. Simultaneous with cutaneous lesions

C. Two days after the skin eruptions

D. During stage of erythematous skin lesions


11. Secondary glaucoma in early stage of herpes zoster ophthalmicus occurs due to:

A. Trabeculitis

B. Iridocyclitis

C. Haemorrhagic hypopyon

D. Hypersecretion of aqueous humour 

E. All of the above


12. Systemic acyclovir in herpes zoster is useful:

A. When started immediately after the onset of rash

B. For post-herpetic neuralgia

C. For ocular lesions only

D. All of the above


13. Systemic corticosteroids in herpes zoster ophthalmicus are indicated when associated with:

A. Facial nerve palsy

B. Optic neuritis

C. Post-herpetic neuralgia

D. All of the above


14. The nerve which is most frequently involved in herpes zoster ophthalmicus is:

A. Frontal nerve

B. Nasociliary nerve

C. Lacrimal nerve

D. Facial nerve


15. Hutchinson’s rule in relation to herpes zoster ophthalmicus:

A. Implies that ocular involvement is infrequent if the side or tip of the nose presents vesicles

B. Is based on involvement of nasociliary nerve

C. Is 100 percent predictor of ocular involvement

D. All of the above


16. Radial keratoneuritis is a feature of:

A. Acanthamoeba keratitis

B. Herpes zoster keratitis

C. Neuroparalytic keratitis

D. All of the above


17. Exposure keratitis is not associated with:

A. 7th nerve paralysis

B. 5th nerve paralysis

C. Symblepharon 

D. Ectropion


18. All are features of rosacea keratitis except:

A. Corneal vascularisation

B. Associated blepharoconjunctivitis

C. Central superficial ulcer

D. Progresses to involve the whole cornea


19. All are true for Mooren’s ulcer except:

A. Peripheral ulcerative keratitis

B. Advancing edge is undermined

C. Perforation is common

D. Floor of ulcer is quickly vascularised


20. Photo-ophthalmia results from exposure to:

A. Ultraviolet rays

B. Infrared rays

C. b-irradiation

D. All of the above


21. In photophthalmia site of lesions is:

A. Cornea

B. Retina

C. Optic nerve

D. All of the above


22. Filamentary keratitis may occur:

A. In trachoma

B. In kerato conjunctivitis sicca

C. Following cataract surgery

D. All of the above


23. Hutchinson’s triad includes all except:

A. Interstitial keratitis

B. Hutchinson’s teeth

C. Vestibular deafness

D. Flat nose bridge


24. Interstitial keratitis may be associated with:

A. Congenital syphilis

B. Malaria

C. Sarcoidosis 

D. All of the above


25. Commonest causative organism of corneal ulcer is:

A. Pneumococcus

B. Staphylococcus

C. Streptococcus

D. Fungi


26. Metabolically active corneal layer is:

A. Epithelium

B. Stroma

C. Descemet’s membrane

D. None of the above


27. Fascicular ulcer is seen in:

A. Phlyctenular keratitis

B. Rosacea keratitis

C. Riboflavin deficiency

D. All of the above


28. Corneal dystrophy asso ciated with acid mucopolysaccharidosis is:

A. Lattice

B. Granular

C. Macular

D. Peripheral


29. All of the following result in loss of corneal sensations except:

A. Acute congestive glaucoma

B. Dendritic ulcer

C. Absolute glaucoma

D. Exposure keratitis


30. The earliest symptom to occur in corneal ulcer is:

A. Pain

B. Photophobia

C. Loss of sensation 

D. Diminished vision


31. Corneal reflex is lost in the disease of:

A. Ophthalmic nerve

B. Ciliary ganglion

C. Supra orbital nerve

D. Motor nucleus of 5th cranial nerve


32. The commonest cause of hypopyon is:

A. Moraxella

B. Gonococcus

C. Pneumococcus

D. Staphylococcus 

E. C. diphtheriae


33. Keratomalacia includes the following except:

A. Night blindness

B. Severe pain in the eye

C. Xerosis of the cornea

D. Perforation of cornea


34. Kayser Fleischer ring is found in which layer of cornea ?

A. Bowman’s membrane

B. Substantia propria

C. Descemet’s membrane

D. Endothelium


35. Corneal transparency is due to all except:

A. Normal IOP

B. Na+ K+ pump

C. Hypercellular stroma

D. Peculiar arrangement of stromal lamella


36. Condition which is always bilateral:

A. Infantile glaucoma

B. Megalocornea

C. Acute congestive glaucoma

D. All of the above

E. None of the above


37. Commonest causative organism of corneal ulcer is:

A. Pneumococci

B. Streptococci

C. Staphylococci

D. Fungal


38. Corneal ulceration may be caused by injury to which cranial nerve:

A. Third

B. Fifth

C. Sixth

D. All of the above


39. What type of corneal dystrophy is associated with acid mucopolysaccharidosis:

A. Granular

B. Lattice

C. Macular

D. Peripheral


40. The colour of fluorescein staining in corneal ulcer is:

A. Yellow

B. Blue

C. Royal blue

D. Green


41. Metabolically most active layer of cornea is:

A. Endothelium

B. Stroma

C. Descemet’s membrane

D. Epithelium


42. Earliest symptom in corneal ulcer is:

A. Loss of sensation

B. Diminished vision

C. Photophobia 

D. Pain


43. Munson’s sign is seen in:

A. Keratoconus

B. Keratoglobus

C. Microcornea

D. All


44. “Orange skin” cornea results due to:

A. Chalcosis

B. Siderosis

C. Ammonia burn

D. Mustard gas


45. Anterior lenticonus is seen in:

A. Marfan’s syndrome

B. Ehler Danlos syndrome

C. Weil-Marchessani syndrome

D. Homocystinuria


46. For transplantation, cornea is preserved in:

A. Modified MK medium

B. Glycerine medium

C. Wet medium

D. All of the above


47. Microscopy of corneal ulcer showed branching septate hyphae. The probable diagnosis is:

A. Candida

B. Mucormycosis

C. Aspergillus

D. Histoplasma


48. Corneal epithelium is composed of:

A. Stratified keratinized epithelium

B. Stratified non-keratinized epithelium

C. Columnar epithelium

D. Pseudostratified epithelium

E. Transitional epithelium


49. Keratomalacia is associated with:

A. Measles

B. Mumps

C. Rubella

D. Chicken pox


50. Herpes zoster ophthalmicus is a predicator of:

A. Leukemia

B. Lymphoma

C. HIV

D. All of the above


51. All are true about keratoconus except:

A. Increased curvature of cornea

B. Astigmatism

C. K.F. ring cornea

D. Thick cornea


52. Thinning of cornea occurs in:

A. Megalocornea

B. Bullous keratopathy

C. Endothelial dystrophy

D. Keratoconus


53. Treatment of choice for photopthalmia is:

A. Irrigation with antibiotics

B. Irrigation with local anaesthesia

C. Irrigation with saline

D. Patching the eye


54. Deep anterior lamellar keratoplasty is indicated in:

A. Disease of deeper cornea e.g. endothelial damage

B. Full thickness corneal opacities 

C. Bullous keratopathy

D. Superficial corneal opacities


55. Recurrent corneal erosion seen in:

A. Corneal dystrophy

B. Keratoglobus

C. Keratoconus

D. Peutz-anaomalies


56. Posterior polymorphous dystrophy

A. Causes corectopia

B. Is inherited in an autosomal recessive fashion

C. Causes blindness in over 90% of sufferers

D. Can be treated with lamellar corneal grafts


57. To prevent keratoconus what is used:

A. Antibiotics

B. Cycloplegics

C. Glasses

D. None


58. Interstitial keratitis is seen in all except:

A. Syphilis 

B. Acanthamoeba

C. Chlamydia trachomatis 

D. HSV

E. HZV


59. Band shaped keratopathy seen in:

A. JRA

B. RA

C. SLE

D. DLE


60. Following corneal transplantation, most common infection occur:

A. Staph epidermidis

B. Streptococcus

C. Klebsiella

D. Pseudomonas


61. Enlarged corneal nerves may be seen in all of the following except:

A. Keratoconus

B. Herpes simplex keratitis

C. Leprosy

D. Neurofibromatosis


62. A 28-year-old male complains of glare in both eyes. The cornea shows whorl like opacities of the epithelium. He also gave a history of long term treatment with amiodarone. The most likely diagnosis is:

A. Terrain’s marginal degeneration

B. Cornea verticillata

C. Band shaped keratophathy

D. Arcus juvenalis


63. Dellen is:

A. Localized thinning of peripheral cornea

B. Raised lesions in corneo limbal junction

C. Age related macular degeneration

d. Marginal keratitis

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