"Marc" wrote in message
...
On Fri, 08 Sep 2006 17:57:19 -0400, Jeff wrote:
Sounds like a great idea, thanks.

Are the progressives large enough to block the scattered UV?
How fast is the transition from dark to clear?
Any problem reading a chart plotter in full sun?

You may be misinterpreting the term "progressives." Progressive add lenses
(PALs) are the blended, lineless multifocal lenses that most people wear in
lieu of the more traditional flat-top bifocals or trifocals. They come in
blanks up to 80mm, which means they can generally be ground to fit almost
any frame, large or small.

Transitions are faster than they used to be, but there is still a lag time.

The problems of reading a chart plotter in full sun would depend on lots of
factors, but without polarizers in your sunglasses, and with the new
sunlight-viewable LCD screens, you should have no trouble seeing them in
direct sun.

Max