What To Look For
When buying sunglasses, check the effectiveness of the lenses against UV rays. High-quality lenses offer 100 percent protection against both UVA and UVB radiation bands, the most dangerous to human eyes. Choose bigger lenses -- smaller ones may not cover the entire surface of your pupil and may reflect the sun's rays directly onto your iris. Buy from established brands that provide superior lens technology as result of continuous research. If you regularly participate in sports, look for impact-resistant lenses made of polycarbonate or Trivex.
Common Pitfalls
It's tempting to choose sunglasses solely for their cosmetic appeal. But for protective sunglasses, you'll have to go beyond the look. Ask for expert advice and, if possible, read the manual of the sunglasses you want to purchase. It should clearly state the protection factor of the lenses and the warranty of the product. Make sure you're choosing a good-quality, durable, water-resistant frame that fits your face comfortably. If the glasses pop up when you smile, the frame is too tight. If they constantly slide down your nose, they're too wide.
Where To Buy
You can get good-looking glasses with maximum UV protection if you shop at an ophthalmologist's office. With help from the experts, you can find a suitable pair of sunglasses that looks appealing and protects your eyes from the sun's harmful rays.
Cost
In 2010, sunglasses cost from $10 to $30 at convenience stores and large retail chains. Branded sunglasses generally retailed for between $100 and $300.
Insider Tips
Before buying sunglasses, read about polarization technology. Sunglasses with polarized lenses eliminate the glare from shiny surfaces, thus improving the quality of your vision in some situations. However, according to an article published in the November 1995 issue of the "International Journal of Dermatology," many polarized lenses don't provide full UV protection.
