Kok Wendy OD (New Haven,CT 06515)

• 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 tell the gender of sunglasses?

  Actually there aren't any clearly distinguish between the female and male.And at present,many people are tend to choose unisex frames which would make him/her look cool and fashionable. BTW, the female frames are always larger/rounder and more decorated than male's. The frames for female are always in many colors and patterns.

• 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.

• Why do people wear glasses frames without lenses in them?

  It is becoming a trend of fashion for wearing glasses frames without lenses in. They are 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.

• 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.

• Do I need different prescriptions for glasses and contacts?

  Prescription for glasses is different from that for contacts because the contacts are placed on the eyeballs directly while glasses are a little far from eye.So the power of the contacts is slightly less nearsighted than the power of glasses.

• How do you think of people who have perfect vision but still wear glasses for style?

  They are chasing fashion, I see many famous stars wear glasses even they have perfect vision.I know some people wear non-prescriptin glasses to conceal the eyes without make up. Some even wear glasses to prevent wind and sands.

• Why do prescription lenses and frames cost so much?

  Unlike other products, glasses are custom made products. Glasses are professional vision correction tools for people with vision problems.That is why they are costly. But you can still find some online stores offer glasses with high quality but with affordable price, usually 1/2 lower than that in brick and motor stores. Firmoo is one of them, they have large selections of frames,but you can save up to 80%-90% for a pair, my last pair cost me only $20 with shipping.

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