By Anupum Pant
In the Arizona sun it’s hard for you to walk east in the morning and west in the evening if you aren’t wearing sunglasses. Okay, maybe that’s an exaggeration, but sunglasses make life much easier. Add to that a hat and it’s bliss to walk in the sun (not so much). But hats are not the point of discussion today.
Sunglasses come in a variety of shapes and sizes. Of course you get cheap sunglasses that give you the swag. And then there are the expensive ones which might look the same but come with added features.
One such feature of the expensive glasses is UV protection. While cheap glasses rarely give you that. How bad that could be? At least they shield you from the intense light, right? Or so you would think.
Cheap glasses which do not offer are actually affect your eyes negatively. You are better off wearing no glasses at all. That’s because when they shield you from the intense light, due to their tint, they make your eyes relax and your pupils dilate. That allows more radiation inside. That means more UV goes in and damages your cells.
The Royal Institution explains…