how can change of size of eyeball be one of the reason for (1)myopia (2)hypermetropia compare the size of eyeball with that of normal eye in each case how does these change of size affect the position of image
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If the length of eye ball increases then the image iss formed in front of retina then the defect will be myopia and if the eye ball becomes small the image will be formed beyond retina thus they surely effect the image and its size and the difference between them is very small.... Hope my answer helped you
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(i) In an eye suffering from myopia, the eyeball is elongated compared to that of a normal eye. Due to this, the image is formed in front of the retina instead of on the retina.
(ii) In an eye suffering from hypermetropia, the eyeball is too small in length compared to that of a normal eye. Due to this the image is formed behind the retina instead of on the retina.
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