Sunglasses aren’t needed indoors because indoor lighting is never bright enough to justify wearing them. They are worn outside in conditions that DO NOT warrant the use of glasses to protect the eyes. Average daylight outside, which should feel normal, makes people tear up like it’s blinding. The tears are your eyes trying to soak up more light because you’ve trained them to handle nothing brighter than the weak, dim glow of indoor lighting. Sunglasses should only be necessary when there’s extreme glare: snow, ice or water reflecting light. Any other time, your eyes should be adapting, not hiding. If daylight burns your eyes, you’re proving the point.. You need early morning sunlight EVEN MORE. Early AM light is gentle, the least intense daylight there is, but still a thousand times brighter than the brightest indoor setup. This practice of building up tolerance to bright light can go a long way to preventing degenerative eye disease. Ditch the shades, step outside, and let your eyes do what nature intended. The only time glasses belong on your face is when blocking blue light from artificial sources. Not when the sun is out.