Neural Control And Coordination Ques 50
50. In mammalian eye, the ‘fovea’ is the center of the visual field, where:
[2015 RS]
(a) the optic nerve leaves the eye
(b) only rods are present
(c) more rods than cones are found
(d) high density of cones occur, but has no rods.
Show Answer
Answer : d
Hints & Solutions
(d) Fovea centralis is the most sensitive part of retina. It has high density of cones, but rods are not found. The syndrome of acquired foveal cone dysfunction presents as a bilateral, painless, progressive central visual loss with minimal or absent fundus changes. It eludes diagnosis until focal, foveal cone ERG is performed.
BETA
