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Sunglasses are a fashion statement that can improve your entire appearance in addition to serving as a practical accessory to shield your eyes from the sun. But not all sunglasses are made equal, and choosing a design you like isn't the only step in selecting the ideal pair. 

Blue light belongs to the visible light spectrum and has a short wavelength and high energy. The sun emits it naturally, and electronic gadgets like computers, tablets, cellphones, and LED lights also emit it artificially. Blue light exposure during the day can increase alertness and assist control sleep cycles.

The majority of people still choose spherical lenses because of their cost, ease of use, comfort, and adaptability. Spherical lenses are excellent at satisfying the demands of most people, providing a smooth and dependable vision correction solution, while toric lenses are essential for people with severe astigmatism.