these sunglasses are blocking the sun

Most of the people who wear the single glasses will need some further modification, especially after the age of 40, when they encounter difficulties, they read, especially food labels and fine print.
People who keep a two set of glasses: indoor reading of bifocal glasses and sunglasses outdoors. With double optical sunglasses, you don't have to carry two pairs of glasses. Some double light sunglasses can have double corrective glasses, and some of the 1.5 round, correct the following areas and sunglasses on ordinary. Therefore, they can be simply presbyopia (hyperopia), and people who are far away, the combination of myopia.
This is the best test your eyes once in a few years to find out if you need any corrective measures. The good news is, you don't have to be stuck with thick glasses frame and dark complexion. Different materials, style, color and size, you can find them. There are enough variety, in order to adapt to your choice, your face. But make sure you get a well-known optometrists prescription.
Most people are aware of, they need higher power presbyopic glasses, when they have problems reading labels or when they are suffering from eye fatigue and eye fatigue. If you usually face the harsh glare of the sun bouncing shiny objects, polarizing reading sunglasses can be ideal for you. Harmful ultraviolet these sunglasses are blocking the sun.
In the choice of double light sunglasses, you must consider the following points: Lens: glass lens fashion these days, because they are simple and fragile. Resin, monomer and polycarbonate lens more stylish, lightweight and strong. They scratch, optical properties of great. You can also select the correct regional low shape. The semicircle of the more popular.