Understanding the Mechanism of the Human Eye
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Understanding the Mechanism of the Human Eye

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Questions and Answers

What part of the eye controls the amount of light entering into the eye?

Iris

What is the thicker part of the lens in the eye?

Centre

What type of cells are sensitive to bright light in the eye?

Cones

What type of cells are sensitive to dim light in the eye?

<p>Rods</p> Signup and view all the answers

What is the name of the layer on which light is focused at the back of the eye?

<p>Retina</p> Signup and view all the answers

What is the spot called where no vision is possible due to the absence of sensory cells?

<p>Blind spot</p> Signup and view all the answers

What are some sources of vitamin A in the diet?

<p>Raw carrots, broccoli, green vegetables (such as spinach), cod liver oil, eggs, milk, curd, cheese, butter, papaya, and mango</p> Signup and view all the answers

How do visually challenged persons try to identify things?

<p>By touching and listening to voices more carefully</p> Signup and view all the answers

What are the two types of resources available for visually challenged persons?

<p>Non-optical aids and optical aids</p> Signup and view all the answers

What are tactual aids used for by visually challenged persons?

<p>Taking notes, reading, and writing</p> Signup and view all the answers

Give examples of auditory aids for visually challenged persons.

<p>Cassettes, tape recorders, talking books, and other such devices</p> Signup and view all the answers

What are some examples of electronic aids for visually challenged persons?

<p>Talking calculators</p> Signup and view all the answers

What is the process where light is broken up into its colors?

<p>Dispersion of light</p> Signup and view all the answers

What natural phenomenon demonstrates the dispersion of light?

<p>Rainbow</p> Signup and view all the answers

What is the tough outer coat of the eye that protects its interior?

<p>Cornea</p> Signup and view all the answers

What is the dark muscular structure behind the cornea of the eye?

<p>Iris</p> Signup and view all the answers

What is the small opening in the iris that controls the amount of light entering the eye?

<p>Pupil</p> Signup and view all the answers

What part of the eye is responsible for giving the eye its distinctive color?

<p>Iris</p> Signup and view all the answers

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