19. Eyeglasses contain corrective lenses that work with the lens in the eye to change the focal point of an image on the retina. If someone needed glasses to see distant objects, explain using proper terminology what condition they have, and what kind of lens is used to correct their condition. (2 marks)

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19. Eyeglasses contain corrective lenses that work with the lens in the eye to change the focal point of an image on the retina. If someone needed glasses to see distant objects, explain using proper terminology what condition they have, and what kind of lens is used to correct their condition. (2 marks)

Answer 1

The condition is **myopia**, also known as nearsightedness. In myopia, the eye's lens focuses the image of a distant object *in front of* the retina instead of directly on it. This results in blurred vision for distant objects.To correct myopia, a **concave** lens (also called a diverging lens) is used in eyeglasses. The concave lens spreads out the incoming light rays, effectively moving the focal point further back so that the image forms correctly on the retina.

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