new_n_lost
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What specific part of the eye is mainly responsible for acute vision ?
a) zonnule of Zinn
b) limbus
c) optic disc
d) macula
e) fovea
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| oldkidontheblock
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macula?
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Malcolm Forbes: Victory is sweetest when you've known defeat
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| keepgoing
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maybe e or d 
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| new_n_lost
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KG.................... Choose One Answer,
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| me007
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e.
fovea centralis - within macula, only cones, highest acuity vision
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| new_n_lost
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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| new_n_lost
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The correct answer is E
Explanation
The fovea lies slightly below and to one side of the optic disk. It is found in the centre of a shallow depression or pit (the macula). Only cones are present at the fovea, which is an area approximately 0.2 mm in diameter: all other parts of the retina including blood vessels are pushed aside. The cones here have individual connections with the bipolar and ganglion cells, hence the fovea gives us our most sensitive and acute vision.
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| mytime
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| new_n_lost
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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| keepgoing
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sorry NNL next time will post one ans only...but i wud have chosn e b/c OKOTB already had chosn d 
thanks
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| new_n_lost
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lol
ok ok
i thought u were online at that n thinking u will reply but i think u had gone.
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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| keepgoing
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