How are we able to see distant and nearby objects clearly? Which part of eye helps in changing curvature of lens? Why no image is formed at blind spot?
Answers
through a particular muscle in our eyes
Ciliary muscle
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Answer:
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We are able to see the distant objects as well as the nearby objects clearly because our eye can focus the images of the distant objects as well as the nearby objects on its retina by changing the focal length of its lens. The focal length of the eye lens is changed by the action of ciliary muscles.
The suspensory ligaments connected to the ciliary muscles helps in changing the curvature of lens.
Blind spot, small portion of the visual field of each eye that corresponds to the position of the optic disk (also known as the optic nerve head) within the retina. There are no photoreceptors (i.e., rods or cones) in the optic disk, and, therefore, there is no image detection in this area.
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