Page 22 - Science E-Book Prep.3 2024-2025 1st term_ unit 2_Neat
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Science Department
Prep.3
P.O.C Short-sightedness Long-sightedness
The vision: the eye sees the near object the eye sees the far object clearly,
clearly, but the far object but the close object is not clear
seem distorted
Reasons of 1- long radius of the eye 1- The shortness of the radius of the ball
sight defect: Ball. 2- The lens of the eye is less convex
2- The lens of the eye is
more convex
Position of In front of the retina behind the retina forming un- clear
the forming un- clear image. image.
Image:
The using a concave glasses to using a concave glasses to collect the
treatment: collect the light rays on light rays on the retina
the retina
First Term 40
