Choosing the right sunglasses

Sunglasses are designed to protect wearers from harmful ultraviolet rays. The American Academy of Ophthalmology has tips for choosing the right shades.

Look for sunglasses that:
Block 99% or 100% of UV rays. Some manufacturers will have labels stating “UV absorption up to 400 nm”; this is the same as 100% absorption. This feature will offer more protection against harmful UV rays.
Are impact-resistant. Plastic lenses are less likely than glass lenses to shatter. Polycarbonate plastic sunglasses are used for athletics and will be tougher, although they won’t withstand scratches any better. Consider purchasing polycarbonate lenses for their scratch-resistant coatings.
Are polarized. Polarized sunglasses protect against reflected glare from pavement, car windows, chromed surfaces and water, as well as provide increased sight while driving or fishing. Check the label to ensure the sunglasses have the maximum UV protection.
Feature a wraparound style. Wraparound sunglasses are designed to prevent light from shining around the frames and into your eyes. Large-frame wraparound sunglasses help protect you from all angles.