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POSTER ON PADLET ON THE TOPIC DEFECTS OF VISION-

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Defects of vision is the loss of power of accommodation of the human eye.        

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Defects of vision is the loss of power of accommodation of the human eye.        

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(2) Hypermetropia or far-sightedness.
(3) Presbyopia.

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Myopia or near-sightedness is the inability of the eyes to see distant objects clearly. It arises when the eye-lens do not become thin as per requirement and as such the image of the object is formed at a distance shorter than the retina.

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Myopia or near-sightedness is the inability of the eyes to see distant objects clearly. It arises when the eye-lens do not become thin as per requirement and as such the image of the object is formed at a distance shorter than the retina.

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This defect may arise due to
(i) excessive curvature of the eye lens.
(ii) elongation of the eyeball.

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This defect can be corrected by using a concave lens of suitable power.

A concave lens of suitable power will bring the image back onto the retina and thus the defect is corrected.

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This defect arises either because
(i) the focal length of the eye lens is too long
(ii) the eyeball has become too small.

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This defect can be corrected by using a convex lens of appropriate power.

Eye-glasses with converging lenses provide the additional focusing power required for forming the image on the retina.

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Hypermetropia or far-sightedness is the inability of eyes to see nearby objects clearly. It arises when the eye-lens does not become thick as per requirement and as such the image of the object is formed at a distance beyond than retina.

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Hypermetropia or far-sightedness is the inability of eyes to see nearby objects clearly. It arises when the eye-lens does not become thick as per requirement and as such the image of the object is formed at a distance beyond than retina.

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Presbyopia is the defect of the eye that arises with ageing due to the weakening of ciliary muscles and loss of elasticity of eye-lens. Due to this defect, a person finds it difficult to view nearby as well as distant objects clearly.

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Presbyopia is the defect of the eye that arises with ageing due to the weakening of ciliary muscles and loss of elasticity of eye-lens. Due to this defect, a person finds it difficult to view nearby as well as distant objects clearly.

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It arises due to the gradual weakening of the ciliary muscles and diminishing flexibility of the eye lens.

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Treatment options include wearing corrective eyeglasses (spectacle lenses) or contact lenses, undergoing refractive surgery, or getting lens implants for presbyopia.

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MADE BY- SARTHIKA PATNI X'C'.

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SMALL VIDEO ON DEFECTS OF EYE..!