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