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A young person presented with a history of a sore left eye for 1 week following a febrile illness. The visual acuity was 6/18 in the left eye. The right eye was normal.
Question 1
What is the diagnosis?
a. Suppurative fungal keratitis
b. Neurotrophic keratitis due to herpes zoster
c. Episcleritis
d. Herpes simplex epithelial keratitis
e. Adenoviral punctate keratitis
Question 2
Which of the following are known risk factors for this condition?
a. Fever
b. Stress
c. Malaria
d. Iritis
e. Immune deficiency
Question 3
Which of the following can be used to treat this condition?
a. Aciclovir 3% eye ointment
b. Prednisolone 0.5% eye drops
c. Trifluorothymidine 1% drops
d. Timolol 0.5% eye drops
e. Ganciclovir 0.15% eye gel
ANSWERS
1. d. This is a large dendritic ulcer probably due to herpes simplex virus.
2. a, b, c and e may all act as triggers for recurrence of herpes simplex infection.
3. a, c, and e are anti-viral medications which are effective against herpes simplex virus. Prednisolone should not be used. Timolol is used in glaucoma to lower intraocular pressure.