On 12/20/06 8:06 PM, in article 1166674018.469403.141480@48g2000cwx.googlegroups.com, "midwest_46@yahoo.com"
> Hello. I am a 33-year-old male. > > I need to get a pair of glasses with the prescription -5.00, -5.00 for > driving, watching movies in a theater, etc. Would it be useful to buy > lenses that have anti-glare or anti-reflective coating on them? Antiglare lenses have a polarized coating on them that ideally cuts out a bit more than half of the light. In addition, it cuts out some reflected light off of the pavement near what is the Brewster angle. Look that up in Wikipedia. I personally use CHEAP clip-on polarized glasses for that purpose.
> What exactly does this coating do? > [quoted text clipped - 8 lines] > The coating can cost as much as an extra $75 for each pair of glasses. > So, is the coating worth the price? Antireflection coatings on glasses are nice but usually not durable. They are anti-FLARE as opposed to anti-GLARE. That is, the typically 4% of light at a lens air surface is reduced to about 1%. This lets more light get through and reduces the multiple reflections that might be annoying.
I find antireflection coatings to be more useful in cameras where the stray light can leave a permanent reminder on the picture. For spectacles, you can often, but not always, move your head in a way to minimize the annoyance.
> Thanks for any information. > > John -- Fermez le Bush
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