I'm 78 and have blue eyes, which are more sensitive to sunlight. I wear sunglasses to cut the glare so I can see better, especially when driving! Try driving west as the sun is going down here in Texas....you literally cannot see!! With or without sunglasses, the sun is waaay more intense than it used to be, appearing bright white instead of yellowish.....atmospheric changes perhaps??? Chem trails??
As for sunglasses CAUSING cancer, not sure I can see (no pun intended) the correlation.......I would be more inclined to think the plethora of "sunscreens" would be suspect there! Seems to me, they act more like "basting a turkey with butter", but that's just my opinion. If the actual operation of the pineal gland is not really understood, how can they make that claim about sunglasses?

The sun is tricky for some people with light eyes, especially glare which can trigger migraines. Many of us have photosensitivity, especially activated star seeded, this sun is not what our activated DNA was evolved for. Too intense, not soft. Its better to get it bare eyed in early morning or l after 4:00 P.M.

To my knowledge and experience and I am a certified Pranic healer by Master Choa Kok Sui, taking in the suns prana through the nasal passage into the sinuses is what activates the pineal gland. Tapping it for 60 seconds can work too.

The skin has its own photoreceptors and why we have tan lines.

There is science that says long-term exposure to the sun can increase the risk of eye disease, such as cataracts, macular degeneration and even cancer. Even short-term exposure can cause photokeratitis — sunburn on the front of the eye.

I am NOT a sunscreen wearer and believe it contributed to the rises in skin cancer.

VERY cool video on the pineal. -