Ophthalmology

Q: A 27 year old female presents with an acute blindness in her right eye after having a major argument with her boyfriend. In the ED she is found to deny physical trauma to the eye but she insists she cannot see anything out of her right eye. In spite of this, she is not particularly concerned about her monocular blindness but notes that it has happened before after fighting with her boyfriend. The ED physician notes that her right eye is normal looking and reacts to light normally. What is the most likely diagnosis?

(a) :  conversion disorder
(b) :  factitious disorder
(c) :  malingering
(d) :  somatization disorder
(e) :  dissociative fugue
Answer:  conversion disorder
Explanation:  

Q: A 54-year-old man presents to the emergency department with intense pain in his right eye. Examination reveals a red ring surrounding his iris and elevated intraocular pressure in the same eye. After obtaining a careful history with the aid of the man’s wife, the emergency room physician concludes that this episode was triggered by which of the following agents?

(a) :  Amitriptyline
(b) :  Cimetidine
(c) :  Diazepam
(d) :  Malathion
(e) :  Propranolol
Answer:  Amitriptyline
Explanation:  

Q: The visual acuity of a patient is recorded to be 20/200. Which of the following best describes this measurement?

(a) :  The patient can read at 20 ft what the average person can read at 200 ft
(b) :  The patient can read at 200 ft what the average person can read at 20 ft
(c) :  The patient can read at 200 ft what the average person can read at 200 ft
(d) :  The patient can read at 20 ft what the average person can read at 20 ft 
(e) :  none of above
Answer:  The patient can read at 20 ft what the average person can read at 200 ft
Explanation:  

Q: An 18 year old boy comes to the eye casuality with history of injury with a tennis ball. On examination there is no perforation but there is hyphaema. The most likely source of the blood is

(a) :  Iris vessels
(b) :  Circulus iridis major
(c) :  Circulus iridis minor
(d) :  Short posterior ciliary vessels
(e) :  None of the above
Answer:  Circulus iridis major
Explanation:  

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