Too short eye ball and too flat lens produce

Astigmatism

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Presbyopia

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Near sightedness

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Far sightedness

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Solution

The correct option is C Far sightedness
When the eye ball becomes too short or lens get flattened, light rays instead of getting focussed on the retina, get focussed behind the retina. Hence, the image is formed behind the retina. This condition is called hypermetropia, also known as long-sightedness. In this disorder, vision of nearby objects gets blurred. It is corrected using convex rays which help to focus the rays on the retina.
So, the correct answer is 'Far sightedness'.

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Similar questions

Isha's eye balls are too short due to which she cannot see

	Column I		Column II
(A)	Myopia	(p)	The power of accommodation of the eye decreases with ageing
(B)	Hypermetropia	(q)	The focal length of the eye lens is too long
(C)	Presbyopia	(r)	The focal length of the eye lens is too small
(D)	Astigmatism	(s)	The eyes fail to distinguish horizontal and vertical lines at the same distance

Explain why, too little or too much light, both are bad for eyes.

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