Answer:
The patient’s eyes are too short.
Explanation:
A person can focus clearly on objects both near and far that means a person's vision is normal.
But when a person cannot focus clearly on objects both near and far then it means that the person is suffering from two defects.
(I) Long sight :
In this defect, the person cannot focus on the nearest object but he can focus clearly on distant objects.
Because his eyeball is too-short and the light is focused at a point behind the retina.
This defect can be correct by using convex lens.
(II) Short sight :
In this defect, the person cannot focus on the distant object but he can focus clearly on near objects.
Because his eyeball is too-long and the light is focused at a point front of retina.
This defect can be correct by using concave lens.
Hence, A doctor suggest converging lenses to correct a patient's vision.
Because The patient's eyes are too short.
