• Nighttime
• Sunglasses

I have f.lux for my pc. I also am looking to get some amber tinted lens sunglasses to wear at night over my own glasses. I have seen orange, copper, amber, and yellow lenses. Is there one that is better than the other? Aside from the fact that... (more)

• Blue
• Light
• Autism
• Sunglasses
• Sleep

I use a cpap at night to sleep and my husband has noticed that I am sleeping with fewer issues at night now that I am on this diet. Even with cpap and prescribed allergy nasal spray and pills I would snore and struggle at night before going on... (more)

• Sun
• Sunlight
• Sunglasses
• Vitamin D

This may seem like a dumb question. Do sunglasses have an effect on vitamin d production? Does vitamin D production rely strictly on exposure to sun, or do you have to see the sunlight? Blind people obviously produce vitamin D, but in what... (more)

• Sun
• Sunglasses
• Lifestyle

What's the deal with UV light absorption through the eyes? I read a few years back that it is essential to let some sunlight into our eyes, especially during the winter months, yet having spoken to people about this, most of them are adamant that... (more)

• Sunglasses

I hope this is not too trivial a question. I've never really liked them, and don't wear them. Except while driving the car in bad light conditions (driving into the sun, low sun in winter and rainy road reflecting), and while skiing. Do we need... (more)

• Sunglasses
• Eyes
• Light
• Hormones

My own experience is that one can sort of get addicted to wearing them. When I was younger, I would wear them all the time and I am sure my eyes were far more light sensitive. The last ten years of so, I have simply not bothered (mostly due to... (more)