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Question
Draw a labeled diagram of the front view of human eye.
Solution
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Explain the following:
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What is the:
far point of a normal human eye?
What is the range of vision of a normal human eye?
Name the part of our eyes which helps us to focus near and distant objects in quick succession.
Fill in the following blank with suitable word:
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The animal which does not have eyes that look sideways is:
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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.
We see advertisements for eye donation on television or in newspapers. Write the importance of such advertisements.
Give scientific reason:
One can sense colours only in bright light.
What is meant by power of accommodation of the eye?
Name the following:
Fluid present in the posterior chamber of the eye.
Draw a scientifically correct labelled diagram of a human eye and answer the questions based on it:
- Name the type of lens in the human eye.
- Name the screen at which the maximum amount of incident light is refracted?
- State the nature of the image formed of the object on the screen inside the eye.
Which part of the eye gets affected if someone is suffering from cataract? How is it treated?
The change in the focal length of an eye lens in human beings is caused by the action of ______.
Match the following:
| Column - I | Column - II |
| 1. Retina | a. Path way of light |
| 2. Pupil | b. Far point comes closer |
| 3. Ciliary muscles | c. near point moves away |
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| 5. Hypermetropia | e. Power of accommodation |
The thin, transparent extension of sclerotic layer found in front of the lens is ______.
Differentiate between members of the following pair with reference to what is asked in the bracket.
Aqueous humour and vitreous humour (location).
With reference to human eye answer the question that follow:
Name the part of the eye associated with the regulation of the shape of lens.
