how are able to see distant and near by object clearly? Which part of eyes helps in changing curvatures of lens ? why no image is formed at blind spot ?
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we can see distinct and nearby objects clearly because our eyes focus the image on the retina by changing the focal length of the lens which is done by capillary muscles.
during blindspot cannot see any image because the optical nerve connects with the retina hence there is no place for the image to be formed.
during blindspot cannot see any image because the optical nerve connects with the retina hence there is no place for the image to be formed.
Sarthaknyati:
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We can see distant and near objects clearly because of the property of accommodation of eye. Accommodation is the name given to the ability of the lens of the eye to change its focal length and produce focused images of both distant and near objects on the retina.
Ciliary muscle helps in changing curvature of the lens. They are attached to the lens and contract or release to change the lens shape and curvature.
No image is formed at blind spot because there are no photo receptors, i.e., cones and rods to detect the light and send it to brain.
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