[Myrddin]

I ordered a pair of the Beyond UV lenses as progressives with my most recent prescription from the local Costco hsoted shop. Ordered June 2nd. Status: Manufactured. Waiting on delivery. $128. Competitive with the other 3 pairs ordered from Costco optical. The others from Costco were Transitions 2 (daily use), clear readers, and DriveGear (polarized with wider range than Transitions2). The Beyond UV pair is explicitly for use at my desk to block the blue light off my monitor. I work until late into the evening, so blocking blue light preserves the melatonin disturbance. I tested the usefulness of that concept with blue blocker clip-ons. Big reduction in eye strain at the expense of extra weight.

[steve86]

“I work until late into the evening, so blocking blue light preserves the melatonin disturbance.”

First I've heard of that. Manipulating the endocrine system with visual filtering. A finer spin on using full-wavelength daylight for SAD. And they used to talk about painting walls with various colors for different emotional effects.

I was having severe problems with daytime somnolence and intense light helped some but not enough. Solved the problem with modafinil.