Dr Robert A Sherman (Chicago, IL)

• Why does the LCD screen of my computer become blank when I look at it through my polarized sunglasses?

  As we konw that Polarizing lenses work by filtering out horizontal light that causes glare. LCD screen on the computer also have a polarizing filter, but they are commonly at around a 45 degree angle. That is to say, when you tilt your glasses at the right angle, all of the light is filtered out and the screen becomes blank.

• How to Choose Sunglasses?

  1. When refers to sunglasses, UV protection should be your first concern. Sunglasses protect your eyes from harmful ultraviolet (UV) rays, reduce eye strain in bright conditions and protect you from flying debris and other hazards. 2. Choose the right color of the lenses. 3. Consider the lens material. 4. Decide on a style. 5. Make sure the sunglasses fit properly.

• Will plain lens glasses be harmful to your eyes if you are just wearing them for fashion?

  If you wear plain glasses correctly, they won't damage your eyes. Some cheap plain glasses may cause damage to your eyes if you wear them for a long time. So you'd better wear them at most 4 hours a day when you wear plain glasses for fashion. What's more, you should do some eye exercises often to relax your eyes.

• Can people with farsightedness wear contact lens?

  Yes, they can use it. Contacts for farsighted people are hard to put in and take out, it needs time to get used to it. They can use concave make up mirrors that can magnify your eye while you put it in.

• How much would Ray Ban prescription eye glasses cost?

  The cost of the frames is depends on the style and item of the Ray Ban frame you choose. Usually the newest style and the high quality frame would cost you more. If you are looking for affordable frames, you may search online, there are many online stores sell Ray Ban eyeglasses, but the price is 1/2 or more lower than that in brick and mortar stores.

• Is it stupid to wear plain glasses as accessory?

  Wearing plain glasses is becoming a worldwide fashion followed not only by students, successful man but also the celebrities. As the pour of this trend, glasses are no longer only the vision correction tool but also a fashion accessory. So it is not stupid to wear plain glasses as accessory.

• Why oversized sunglasses are so fashionable?

  Oversized sunglasses are becoming more and more popular these days. Not only because they are designed with fashionable styles but also because they are functional. They are popular especially among stars to conceal their bloodshot and dark ringed eyes whenever they are without make up. Stars are always the lead of fashion, so oversized sunglasses is now chasing by the people.

• Do polarized sunglasses cause cancer?

  Polarized sunglasses with good quality won't cause cancer because they will block the harmful rays or glare that would damage our eyes. If your eyes are exposed to the sun directly, then it will cause cancer.However, polarized sunglasses is the strongest defense against cancer of the eye.

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