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प्रश्न
Choose the correct answer :
Presbyopia is a disease of _____________
विकल्प
ear
nose
mouth
eye
उत्तर
Presbyopia is a disease of eye
APPEARS IN
संबंधित प्रश्न
The kind of lens required to correct Myopia
Name the defect of vision in which the eye-lens loses its power of accommodation due to old age.
What is the far point of a person suffering from myopia (or short-sightedness)?
A man can read the number of a distant but clearly but he finds difficulty in reading a book.
From which defect of the eye is he suffering?
Name the following:
The eye defect caused due to shortening of the eye ball from front to back.
A student cannot see a chart hanging on a wall placed at a distance of 3 m from him. Name the defect of vision he is suffering from. How can it be corrected? Draw ray diagrams for the (i) defect of vision and also (ii) for its correction.
Draw a ray diagram to show how Hypermetropia is defect can be corrected using a lens.
Observer the following diagram and answer the questions.
a) Which eye defect is shown in this diagram?
b) What are the possible reasons for this eye defect?
c) How this defect is corrected, write it in brief?
Name the following:
The photosensitive pigment present in the rod cells of the retina.
Given below is a diagram depicting a defect of the human eye? Study the same and answer the question that follow:
Give two possible reasons for this defect of the eye in human beings.
Give Reason:
Deficiency of vitamin A causes night blindness.
Differentiate between:
Myopia and Hypermetropia.
Explain the Term: Presbyopia
Explain the Term: Astigmatism
Give Technical Term:
The type of lens used to correct myopia is
Study the following diagram carefully and then answer the questions that follow. The diagram is depicting a defect of the human eye :
(i) Identify the defect shown in the diagram.
(ii) Give two possible reasons for the above defect.
Observe the given below the figure, correct it and explain and write about the concept depicted in this figure.
Which of the following statement is correct?
Observe the following diagram and answer questions following it:
- Identify the defect of vision shown.
- List its two causes.
- Name the type of lens used for the correction of this defect.
