(Single Best Answer) Question 31: The Conversion of CO2 and H2O into Carbonic acid during the formation of Aqueous humour is catalysed by which one of the following enzymes ?
A) Carboxylase B) Carbamylase C) Carbonic anhydrase D) Carbonic deoxygenase Answer (Select an option above to get the answer):
A) Voluntary slow eye movements B) Involuntary slow eye movement C) Abrupt, involuntary slow eye movements D) Abrupt, involuntary rapid eye movements Answer (Select an option above to get the answer):
A) Miosis B) Enophthalmos C) Ptosis D) Cycloplegia Answer (Select an option above to get the answer):
(Single Best Answer) Question 35: Relative colour and luminosity of photoreceptive input under changing light conditions are regulated and maintianed by ?
A) Muller cells B) Amacrine cells C) Ganglion cells D) Retinal astrocytes Answer (Select an option above to get the answer):
(Single Best Answer) Question 36: All of the following signs could result from infection within the right cavernous sinus, except ?
A) Loss of pupillary light reflex B) Loss of corneal blink reflex C) Ptosis D) Right ophthalmoplegia Answer (Select an option above to get the answer):
(Single Best Answer) Question 37: A 56 year old patient presents after 3 days of cataract surgery with a history of increasing pain and diminution of vision after an initial improvement. The most likely cause would be ?
A) Endophthalmitis B) After cataract C) Central retinal vein occulsion D) Retinal detachment Answer (Select an option above to get the answer):
(Single Best Answer) Question 38: All of the following conditions are contraindicated or likely to worsen in a case of primary open angle glaucoma, when treated with Timolol maleate 0.5% eye drops, except ?
A) Hypertension B) Hypercholesterolemia C) Depression D) Bronchial asthma Answer (Select an option above to get the answer):
(Single Best Answer) Question 39: A 25 year old executive presents with metamorphopsia in his right eye. On examination the fundus shows a shallow detachment at the macula. The fluorescein angiography shows a "smoke stack sign". Which of the following management should be given ?
A) Topical antibiotic - corticosteriod combination B) Systemic corticosteriod for two weeks and then taper C) Pulse Methyl Prednisolone for three days and then taper D) Just wait and watch for spontaneous recovery Answer (Select an option above to get the answer):
(Single Best Answer) Question 40: A case of injury to right brow due to a fall from scooter presents with sudden loss of vision in the right eye. The pupil shows absent direct reflex but a normal consensual pupillary reflex is present. The fundus is normal. The treatment of choice is ?
A) Intensive intravenous corticosteriods as prescribed for spinal injuries to be instituted within six hours B) Pulse methyl prednisolone 250 mg four times daily for three days C) Oral Prednisolone 1.5 mg/kg body weight D) Emergency optic canal decompression Answer (Select an option above to get the answer):