SOURCE: DAILY MONITOR WHEN we walk in the sun, we squint and our pupils constrict or become narrower to control the amount of light entering the eyes. This is because of the harmful UVA and UVB rays contained in sunlight. The best way to protect your eyes from these harmful rays is to wear sunglasses. A good pair of sunglasses should be able to simulate the effect of being in a darkened room so the pupils dilate to allow more light in to allow you see better. Brian Isiko, an…
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