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Why We Need Sunglasses?

April 06, 2017

Why We Need Sunglasses?

Sunglasses are a great fashion accessory, but their most important job is to protect your eyes from the sun's ultraviolet (UV) rays. Some of the sun's effects on the eyes include Cataracts, a clouding of the eye's lens that can blur vision. An estimated 20% of cases are caused by extended UV exposure.

Now if you want to buy sunglasses then how you can select right glasses and the glasses which are suitable for your face shape. To choose right glasses following tips should be kept in mind.

How to Choose the Right Sunglasses?

Following tips hopefully helpful to choose the right Sunglasses:

Block Both UVA & UVB

Sun emits colorless ultraviolet radiations these radiations when fall on they face, produce vitamin D which is necessary but these rays also cause skin cancer and sunburn. These radiations can burn harms your eyes.

So, when you are buying sunglasses just check the tag that these glasses block the ultraviolet radiations 100% or not. If there is no such requirement is fulfilled by sunglasses then drop them on the rack again. If you buy glasses which are not blocking Ultraviolet or blocking them partially then these radiations can destroy your retina, blur your vision, skin burn, skin cancer, and cause discomfort.

Wrap Around Your Eyes

If the sunglasses are not fit then the rays seep into your eyes and causes to damage your retina or discomfit. Select those glasses which are wrapping around your eyes fully this the only way to block the UV radiations completely.

“I look at something that fits the face well,” says optometrist Fraser Horn, OD. “I don’t want it up touching the eyelashes, but I also don’t want it pushed way out. And I want something that lines up with your brow.”

Darkness and Color

If the color of lens is black it does not mean that these glasses will block the UVA and UVB completely. Pupil, the black dot at the center of the eye, controls how much light gets in. When you wear darkened lenses, the pupil opens more to let in more light. If your sunglasses aren’t rated to block UV rays, you might let even more into the back of your eye.

Polarized Sunglasses

These glasses have polarized lenses. These reduce glare at the beach, in the snow, or out on the water. But they do not take the place of UV protection. These glasses are mostly worn as a fashion.

You might see better through them when there’s tons of light around. But they can make it harder to see things like computer screens, smartphones, or dashboards.

Material and Design of Glasses

Which one is best? Either plastic lenses or polycarbonate lenses? Either more curved or less curved? It all depends on your choice and fashion of that time.

Conclusion

Why we need sunglasses and which steps we have to kept in mind before buying the sunglass so that we can right glass? Main points or tips have discussed above. If you want right glasses of your choice then contact us right away.