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प्रश्न
Give the main function of the following:
Fovea centralis
उत्तर
Fovea centralis - It is a point at retina where more cone cells are concentrated and thus produces sharpest vision.
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संबंधित प्रश्न
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads :
Left eye : +2.50 D
Right eye : +2.00 D
Which lens bends the light rays more strongly?
What is the:
far point of a normal human eye?
Define the term "power of accommodation" of human eye.
What shape are your eye-lenses:
when you look at your hand?
Name the following:
The part of the eye responsible for its shape.
Given below is a set of five parts. Rewrite them in correct sequence.
Conjunctiva, retina, cornea, optic nerve, lens.
Name the following:
The opening through which light enters the eyes.
Differentiate between:
Vitreous humour and Aqueous humour.
Give Technical Term:
The adjustment of the eye in order to obtain a clear vision of objects at different distances
Mention, if the following statement is True or False
The least distance of distinct vision for the human eye is 25 cm
Choose the Odd One Out:
The black opening between the aqueous humour and the lens is called ____________.
At noon the sun appears white as
Explain the structure and functioning of Human eye. How are we able to see nearby as well as distant objects?
We cannot distinguish colours in dim light. Explain giving suitable reasons.
With reference to human eye, answer the following question.
What is blind spot?
Arrange and rewrite the term in group in correct order to be in a logical sequence, beginning with the term that is underlined:
Pupil, Aqueous humour, Retina, Vitreous humour.
Given below is a cross section of the human eye. Match the structures marked (a) to (e) with their correct functions:
Example: (f) - 6. Holds the lens in position
| Cross section of Human Eye | Functions | |
 |
1. | Protects retina |
| 2. | Regulates the size of the pupil | |
| 3. | Alters the shape of the lens | |
| 4. | Keeps the lens moist | |
| 5. | Transmits nerve impulses to brain | |
| 6. | Holds the lens in position |
Name the following:
Capacity of the eye to focus at different distances.
The layer in the eye where sensory cells (rods and cones) are located ______.
