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Human eye
Appears in
Concepts tested here
- Fovea
- Parts of the eye
- Retinal and vitamin A
- Rhodopsin
All Questions
2015 AIPMT-II 1 question
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In mammalian eye, the 'fovea' is the center of the visual field, where:
2014 AIPMT 1 question
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Which one of the following statements is not correct?Retinal is an aldehyde of vitamin A, not a derivative of vitamin C.
2013 NEET 1 question
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Parts A, B, C and D of the human eye are shown in the diagram. Select the option which gives correct identification along with its functions/characteristics:
A is the retina, the inner layer that contains the photoreceptor cells, rods and cones.
The blind spot has no photoreceptors, and the anterior part of the choroid forms the ciliary body.
2011 AIPMT-PRE 1 question
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The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye is a derivative ofThe rods contain a purplish-red protein called rhodopsin or visual purple, which is needed for twilight (scotopic) vision.
The photopigments of the eye are made of opsin (a protein) and retinal.
Retinal is an aldehyde of vitamin A, so rhodopsin contains a derivative of vitamin A.
This is why deficiency of vitamin A causes night blindness.
Hence rhodopsin is a derivative of vitamin A.