If you think shopping for sunglasses is just trying on different frames in front of the mirror you are way off, here we try to give you a full guide in how to choose your perfect sunglasses next time you want to go shopping.

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Protection

As they always say, safety comes first and this is no exception when it comes to sunglasses, you need to

1- Aim to protect your eyes first and foremost. Excessive exposure to UV radiation can cause a variety of problems for your eyes such as cataracts, burns, and cancer.

2- If you want your sunglasses to protect you from these risks, look for pairs that block at least 99% of UVB rays and at least 95% of UVA rays.

3- Don’t buy cosmetic sunglasses, they usually don’t offer any kind of information about the level of protection they provide.

Lens color and material

They color of the lens both affects your fashion statement and how well you detect contrast and color differences.
Some colors enhance contrast, which can be useful; however, this is often at the expense of color distinction, which can cause problems (when you’re driving, for example, and need to be able to clearly differentiate the colors of a traffic light). Some sunglasses even come with interchangeable lenses so you can change the color easily, depending on what you’re doing.

Look for distortion. Hold the lenses up in front of the sun or light bulb. Start moving the sunglasses, check that wave distortion doesn’t happen. If it doesn’t happen, this is a good sign.

Select a lens which is scratch-resistant
The most important factor about the lens is being scratch resistant.

Style is important

we have different popular frame styles such as Aviators, Wayfarers, Oversized, Round, Square, etc. 
Usually the frame you want to choose has to be different from your face shape For example, if you have a round face, more angular frames will work well, and if your face is more square, a rounder softer frame shape will look good.
• Oval face: The oval type usually has the “perfect face shape”, and can wear any style of glasses. Avoid frames that are either too thick or too thin. Don’t choose frames wider than your face width.
• Square face: Because this face shape has very straight, pronounced jawline and edges, choose round glasses to balance out these features. Make sure the frames are not too thick. Try to choose wider sunglasses and avoid rectangular glasses with sharp corners.
• Round face: A round face has plumper cheeks and chin. Choose polygonal or square sunglasses that have an angle design to balance this out. Look for thicker frames.
• Long face: Choose larger lenses and the polygonal frame to modify a long face. Popular retro glasses and sports glasses can be considered.
• Flat face: Choose darker lenses and frames to highlight the contours of the face. Bright colors can also make expressions more vivid!
 
Make sure the sunglasses fit properly. Try them on and make sure they don’t pinch around your head. The weight should be evenly distributed between your ears and nose, and your eyelashes shouldn’t touch the frame or lenses. Glasses should be your stand on the bridge of the nose and ears; if they feel inclined to one side, you need to adjust them. In addition, use the measuring rule that an “eyelash is less than the lens”.
• If your sunglasses don’t fit well you can go to an eyeglass shop to have them adjusted.
• Make sure that the lens area is not too small, so that it will be able to block sunlight.