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WorksheetsCORNEA QUIZ
Total questions: 20
Worksheet time: 3mins
What is the most likely diagnosis in the above patient with complaints of pain, redness, lacrimation and photophobia since the past 2 days?
Fungal corneal ulcer
Bacterial corneal ulcer
Trachoma
Granular corneal dystrophy
All of the following can be seen in the image except
Hypopyon
Wessely immune ring
Feathery ulcer edges
Hyperemia
The cornea in the above image has been stained with
Alcian blue
Fluorescein
Rose Bengal
Lissamine green
Transparency of cornea is mainly due to which layer?
Endothelium
Descemet's membrane
Bowman's membrane
None of these
Normal corneal endothelial count in a young adult is
500/mm²
2500/mm²
4500/mm²
6500/mm²
All are true regarding cornea except:
Endothelium help in maintaining dehydrated state
Oxygen is mostly derived by epithelium directly from the air through tear film
Glucose supply for corneal metabolism is mainly derived from the aqueous
Richly vascular
Fluorescein dye is used to stain
Areas of denuded epithelium
Diseased and devitalized cells
Mucus
All of the above
A 60-year-old man complains of left eye pain and photophobia. On examination there is an erythematous rash of the periorbital skin and forehead on the left side. You also note erythema and a small vesicle on the tip of the patient's nose. His ipsilateral conjunctiva is injected and after staining the affected eye with fluorescein, Wood's lamp examination reveals corneal uptake in a fine branching pattern. What is the most appropriate therapy for this patient?
Oral famciclovir 800 mg three times a day for 7-10 days
Oral valacyclovir 500 mg three times a day for 7 days
Oral acyclovir 800 mg three times a day for 7 days-10 days
Topical acyclovir, 5 times a day until resolution of ocular symptoms
Which of the following is the drug of choice for treatment of corneal ulcers caused by filamentous fungi?
Itraconazole
Natamycin
Nystatin
Fluconazole
Which organism does not invade intact cornea?
C.diphtheria
N. meningitidis
N. gonorrhoea
Pseudomonas
A regular contact lens user presents with complaints of severe pain, photophobia and blurring of vision for more than two weeks not responding to standard treatment. On examination, a paracentral ring shaped lesion with stromal infiltrates and overlying epithelial defects is observed in the affected eye. Which of the following is the most likely diagnosis?
Bacterial keratitis
Acanthomoeba keratitis
Viral keratitis
Fungal keratitis
A 33 year old man presents to AIIMS ophthalmology OPD with pain and watering of eyes. On examination there was a 3X2 mm greyish white corneal ulcer with indistinct elevated margins. The lesion is surrounded by feathery finger like infiltration into the adjacent corneal stroma. Minimal hypopyon is also observed. Based on the information provided the microbiological investigation should be directed against:
Aspergillus spp.
Pseudomonas spp.
Herpes simplex virus
Acanthamoeba spp
Which of the following is not a feature of fungal corneal ulcer?
Fixed hypopyon
Ulcer with sloughing margins
Symptoms are more pronounced than signs
Fungal hyphae are seen on KOH mount
Band shaped keratopathy occurs due to deposition of
Amyloid
Iron
Calcium
Melanin
Not true about Blue sclera:
Seen in Osteogenesis imperfecta
Does not occur in Ehlers-Danlos syndrome
Blue color is produced by underlying uveal pigment
Seen in Marfan's syndrome
Sclera is thin
Which of the following drugs is used as an adjuvant therapy for treatment of fungal corneal ulcers?
Atropine eye drops
Pilocarpine eye drops
Dexamethasone eye drops
Lidocaine
Patient presented to ophthalmology OPD with glaucoma and bulging of sclera. What is the diagnosis?
Granular dystrophy
Staphyloma
Keratomalacia
Keratoconus
A patient presents to the OPD with the following clinical picture.What will be the management for this case?
Penetrating keratoplasty
Amniotic membrane graft
Intracameral antibiotics
Cyanoacrylate glue
which parameter is tested in the eye with the help of this investigation?
Corneal thickness
Size of the optic disc
Corneal curvature
Pupillary diameter
Which organism infection is virulent and may cause corneal ulcer perforation within 48hours?
Pseudomonas
N.meningitidis
N.gonorrhoea
C.diphtheria
