Different people have different reasons to wear sunglases. Some people might just wanna be cool or to match their clothes or hair etc.
Some poeple choose to wear sungalsses to hide something.
Of course, most people wear sunglasses because they need to protect their eyes. Check the functions of sungalsses below:
Sunglasses prevent strong light irradiation.
When the eye receives too much light, it will naturally shrink the iris. Once the iris contraction to the limit standard, then people need to squint.
If the light is still too much, such as the snow reflected the sun, will produce damage to the retina.
Quality sunglasses can filter out up to 97% of the light entering the eyes to avoid injury.
FUNTION 2 .
Sunglasses prevent glare exposure.
Some surfaces, such as water, can reflect a lot of light, and this will disrupt the line of sight produce bright or hidden objects.
The Use of high-quality polarized sunglasses can completely eliminate glare exposure; we will introduce later polarizing technology.
Sunglasses can eliminate specific frequencies of light.
Certain frequencies of light can blur vision, while other frequencies of light can enhance the contrast.
Choosing the right color for the sunglasses, in certain circumstances it get better results.
When buying a pair of cheap sunglasses, you’ll have to give up
these advantages, and even make it worse.
For example, if your sunglasses do not provide UV protection, it will take you more exposed to UV light. Cheap sunglasses filter out a portion of the light, causing your iris to open to receive more light.
This also would allow more ultraviolet radiation to enter, increased ultraviolet radiation damage to the retina.
Also, you can add your prescription to the sunglasses, so that the glasses wearer don’t have to worry about get hurt buy sunshine.