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प्रश्न
Fill in the following blank with suitable word:
The part of eye which alters the size of the pupil is............
उत्तर
The part of eye which alters the size of the pupil is iris.
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संबंधित प्रश्न
Answer briefly:
How do you perceive the colour of an object?
Myopia is an example of ______.
How does the eye adjust to take account of an increase in brightness?
What changes the shape of lens in the eye?
Fill in the following blank with suitable word:
Most of the refraction of light rays entering the eye occurs at the outer surface of the.............
After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:
Left eye : + 2.00 D
Right eye : + 2.25 D
The child is suffering from the defect of vision called:
(a) short-sightedness
(b) long-sightedness
(c) cataract
(d) presbyopia
With reference to the functioning of the eye, answer the question that follow:
Name the two structure in the eye responsible for bringing about the change in the shape of the lens.
Choose the correct answer.
In the chemistry of vision, the photosensitive substance is _________________
______ is tough and thick white sheath that protects the inner parts of the eye.
A student sitting on the last bench can read the letters written on the blackboard but is not able to read the letters written in his text book. Which of the following statements is correct?
