On Wed, 06 Dec 2006 07:15:38 +0800, Derek Ruddock <[EMAIL PROTECTED]> wrote:
> For pilots who need reading glasses, The Cancer Council of NSW is now > selling polarised sunglasses with magnifying inserts i.e. a little like > bifocals, but with the main part plain. They work very well, and are an > alternative to the stick on reading lenses. Price is $39.99 > > > Just the thing for reading a PDA or a map, whether in the cockpit or in > the car > > Well...Almost. If they work for some, great! Unfortunately, most people with correctives also have astigmatism corrections required and without those, magnification only can get very tiring. Even worse is that few people have similar defects in both eyes, whereas the stickies assume that they're the same. The other problem is that darker glasses cause the pupil to open correspondingly to compensate for loss of apparent light. This in turn reduces the resolution of the eye making the corrections (or lack of) more critical than otherwise. Perhaps one of the optometrists in our sport can comment. Nevertheless, I wouldn't mind trying them...do you have a link ? cheers Z -- _______________________________________________ Aus-soaring mailing list Aus-soaring@lists.internode.on.net To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
