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प्रश्न
Name the following:
The pigmented circular area seen in the eye.
उत्तर
Iris
APPEARS IN
संबंधित प्रश्न
Distinguish between: aqueous humor and vitreous humor
Distinguish between: blind spot and yellow spot
Myopia is an example of ______.
Where does the greatest degree of refraction of light occur in the eye?
What changes take place in the shape of eye-lens:
when the eye is focused on a near object?
What are rods and cones in the retina of an eye? Why is our night vision relatively poor compared to the night vision of an owl?
Fill in the following blank with suitable word:
Having two eyes gives a ................field of view.
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
Name the muscles of the eye responsible for the power of accommodation.
State the function of each of the following parts of the human eye:
(i) Cornea
(ii) Iris
(iii) Pupil
(iv) Retina
Millions of people of the developing countries are suffering from corneal blindness. This disease can be cured by replacing the defective cornea with the cornea of a donated eye. Your school has organised a campaign in the school and its neighbourhood in order to create awareness about this fact and motivate people to donate their eyes after death. How can you along with your classmates contribute in this noble cause? State the objectives of organising such campaigns in schools.
Name the respective organs in which the following are located and mention the main function of each:
(i) Iris
(ii) Semicircular canals
Name the following:
The focal length of the lens is altered by the contraction of which type of muscles.
Give Technical Term:
The nutritive layer of the eye which also presents reflection of light.
State the Location:
Iris
A small hole of changing diameter at the centre of Iris is called _______.
Write an Explanation.
Farthest distance of distinct vision
______ is the structural and functional unit of living organisms.
Which one of the following statements is NOT correct?
With reference to human eye, answer the following question.
What is blind spot?
The layer in the eye where sensory cells (rods and cones) are located ______.
