In which type of eye defect far point of the eye gets reduced?
Question
In which type of eye defect far point of the eye gets reduced?
Solution
The type of eye defect in which the far point of the eye gets reduced is known as Myopia, also referred to as nearsightedness.
Here are the steps that explain this condition:
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In a normal eye, the light rays from a distant object are focused on the retina, which is the light-sensitive part at the back of the eye. This point is known as the far point and is ideally at infinity for a normal eye.
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In Myopia, the eye is unable to focus the light rays from a distant object onto the retina. Instead, the light rays are focused in front of the retina.
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This happens because the eyeball is too long, or the lens system of the eye is too powerful.
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As a result, the far point is no longer at infinity, but at a finite distance in front of the eye. This means the far point has been reduced.
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Therefore, a person with myopia can see nearby objects clearly, but distant objects appear blurred.
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Myopia can be corrected with a concave lens, which diverges the light rays before they enter the eye, allowing them to be focused on the retina.
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