Sunglasses: 170,000,000,000$ Industry. Wonder why?

Sunglasses: 170,000,000,000$ Industry. Wonder why?

Tips for eyesight healing:
-Getting rid of sunglasses
-Training the eyes
-Pinhole glasses
-Sun gazing
-Pearl powder
-Removing LEDS and Wi-fi from the home
-Candle light gazing

If we block all the UV spectrums from entering the eyes they fall apart: Sunglasses, Windows, Windshields, etc.