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I don’t know when sunglasses appeared and when eye prescription was begun to use to sunglasses. But I do know that sunglasses were designed to protect people from harmful ultraviolet radiations in the sunlight. And prescription sunglasses were used to provide eye protection for who suffer eye disease and need vision correction.

We know that hot sunshine is very harmful for us. If you stay in strong sunlight for a long time, it may burn your skin. Or even cause you suffer skin cancer. And usually people like to use sun scream to protect them well. As for eyes, the strong sunlight can also do harm to our eyes. So we need to take some tool to protect it. And prescription sunglasses could offer you this protection.

Prescription sunglasses protect your eyes by blocking the harmful UV rays reach your eyes. Sunlight usually emits three kinds of rays. There are visible, infrared and UV rays. Among the three kinds of rays, UV rays is the do harm to our skin and eyes. So if we can prevent UV rays reach us, it will keep us health. And qualified sunglasses should have this function. You should look at their label when you buy sunglasses. 100% UV protection are recommended.

At last, there is one thing you should remember when you buyprescription sunglasses . No matter you suffer eye disease or not, you should have an eye test in eye care center before you buy sunglasses. If you have a good eyesight and needn’t eyesight correction, you can buy a pair of Plano sunglasses. If you need vision correction, you should fallow eye doctor’s advice and take your eye prescription for making a pair of prescription sunglasses.