In mammalian eye, the 'fovea' is the center of the visual field, where:

  • Option 1)

    the optic nerve leaves the eye.

  • Option 2)

    only rods are present.

  • Option 3)

    more rods than cones are found.

  • Option 4)

    high density of cones occur, but has no rods.

 

Answers (1)

 

Fovea -

At the posterior pole of the eye lateral to the blind spot, there is a yellowish pigmented spot called macula lutea with a central pit called the fovea.

- wherein

The fovea is a thinned-out portion of the retina where only the cones are densely packed. It is the point where the visual acuity (resolution) is the greatest.

 

 Only cones are densely packed and rodes Hu are absent.


Option 1)

the optic nerve leaves the eye.

This option is incorrect.

Option 2)

only rods are present.

This option is incorrect

Option 3)

more rods than cones are found.

This option is incorrect

Option 4)

high density of cones occur, but has no rods.


This option is correct.

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