Mammoth Memory

Concave lens use – Glasses

When people have a weekness in the lens of their eye that causes short-sightedness or myopia (the ability to see objects at short distances but not distant objects), they will need glasses.

To correct this problem they will need a glass lens which is concave.

Distant blurry image on retina of short sighted person

With an eye which has myopia, the image is formed in front of the retina.

Concave lens of glasses used to focus image on eyes retina

To correct an eye with myopia, a concave lens is used to move the focused image on to the retina (the sensory membrane that lines the back of the eye).

Pair of glasses

Another great use for concave lenses.

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