> i am sure that in eyeglass store lingo the terms anti glare and anti
> reflective are being used interchangeably and refer to the same
> coating.
> at -5 you are probably getting hi index lenses and therefore anti
> reflective coatings become more important or the reflections on the
> lenses will be greater.
> the coatings do increase light transmission thru the lens and therefore
> enable brighter view. the coatings are on both surfaces of the lens and
> therefore offer an esthetic advantage (someone looking at you sees your
> eyes and not a lot of reflection off the lens) and a functional
> advantage (the wearer has less kick or reflection in the lens he's
> looking thru).
> The idea is the AR coating causes the lens interface to more or less
> disappear . look at your self in a mirror with wearing a pair of
> regular lenses and compare with ar lenses. Very obvious difference.
> midwest_46[at]yahoo.com wrote:
> > 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?
> > > What exactly does this coating do?
> > > > Also, I may buy another pair of glasses to use as reading glasses.
> > These glasses would be used for reading, computer use, etc. Would
> > anti-glare or anti-reflective coating be useful for these glasses?
> > > > I have had driving glasses and reading glasses before, and I don't
> > think I've ever had anti-glare coating before. I'm not sure, but I
> > don't think that not having this coating has been a problem.
> > > > The coating can cost as much as an extra $75 for each pair of glasses.
> > So, is the coating worth the price?
> > > Thanks for any information.
> > > > John
I find they make a tremendous difference when driving at

> 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?
> What exactly does this coating do?
> Also, I may buy another pair of glasses to use as reading glasses.
> These glasses would be used for reading, computer use, etc. Would
> anti-glare or anti-reflective coating be useful for these glasses?
> I have had driving glasses and reading glasses before, and I don't
> think I've ever had anti-glare coating before. I'm not sure, but I
> don't think that not having this coating has been a problem.
> The coating can cost as much as an extra $75 for each pair of glasses.
> So, is the coating worth the price?
> Thanks for any information.
> John

> Right. This sci.med.VISION, where we use ophthalmic optics terminology, not
> precision camera or instrument terminology. But I still think you are using
> the term glare incorrectly even in that context (see my definition below). And
> I don't know why you are specifying dielectric below. What has that got to do
> with anything? Reflected sunlight off any relatively smooth surface anywhere
> near Brewster's angle will of course be polarized, including glass, water,
> even the atmosphere, which is why polarized filters are used under those
> conditions. We do not use the term flare in the eye business, except in the
> context of warning people not to try to observe the solar variety, and to use
> protective eyewear when handling the boating or highway hazard varieties. Your
> use of the term here is showing your, er, obfuscatory flair.

> On 12/21/06 9:04 AM, in article
> 78zih.35837$wP1.2987[at]newssvr14.news.prodigy.net, "William Stacy"
> <wstacy[at]obase.net> wrote:
> There you go again. Please don't use confusing terms like glare
> and flare. Glare refers to distracting light coming from around
> the object of regard, and cannot be corrected with any eyeglasses.
> Specular reflection refers to light that is reflected off a
> relatively smooth surface like a highway, water and computer
> monitor or eyeglass lenses. These the first two can be fixed with
> polarized lenses, the second by the use of anti-reflection
> coatings. Let's keep the terminology straight. In the present
> case, if he chooses high index lenses, which have significantly
> higher relflectivity, approaching 10%, anti-reflection coatings
> will definitely help. High quality ones (over $60) are quite
> durable and always come with guarantees.
> Again, there is terminology confusion. I take glare to be s
> (senkrecht) polarized light reflected off of dielectric surfaces, like
> asphalt, that can be partially blocked (totally at the Brewster angle)
> by viewing through properly oriented polarized film.
> Flare is the recording or perception of artifacts in a photograph
> arising from light reflected at the surfaces of lens elements.
> Bill
> -- Fermez le Bush

> So, let me see if I have this straight.
> Anti-glare coating keeps light out and decreases the brightness of,
> say, a computer monitor.
> Anti-glare coating can be purchased in cheap, clip-on form.
> Anti-reflection coating allows more light to come in. Thus, if I am
> wearing glasses with anti-reflection coating, my glasses reflect less
> light towards the people who are looking at me.
> So, if I am sitting at a computer, anti-reflection coating will make
> the monitor appear brighter than it already appears?
> Also, the lenses that I buy will be transition lenses. That is, when
> the sun goes up, the glasses become sunglasses. So, on a sunny day, is
> anti-glare coating necessary if I have transition lenses? And, as for
> anti-reflection coating, will transition lenses and the anti-reflection
> coating cancel each other out?

> There you go again. Please don't use confusing terms like glare and flare.
> Glare refers to distracting light coming from around the object of regard, and
> cannot be corrected with any eyeglasses. Specular reflection refers to light
> that is reflected off a relatively smooth surface like a highway, water and
> computer monitor or eyeglass lenses. These the first two can be fixed with
> polarized lenses, the second by the use of anti-reflection coatings. Let's
> keep the terminology straight. In the present case, if he chooses high index
> lenses, which have significantly higher relflectivity, approaching 10%,
> anti-reflection coatings will definitely help. High quality ones (over $60)
> are quite durable and always come with guarantees.

> On 12/20/06 8:06 PM, in article
> 1166674018.469403.141480[at]48g2000cwx.googlegroups.com, "midwest_46[at]yahoo.com"
> <midwest_46[at]yahoo.com> wrote:
> > 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?
> > > > Also, I may buy another pair of glasses to use as reading glasses.
> > These glasses would be used for reading, computer use, etc. Would
> > anti-glare or anti-reflective coating be useful for these glasses?
> > > > I have had driving glasses and reading glasses before, and I don't
> > think I've ever had anti-glare coating before. I'm not sure, but I
> > don't think that not having this coating has been a problem.
> > > > 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

> Would it be useful to buy
> lenses that have anti-glare or anti-reflective coating on them?

> 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.

> 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?

> What exactly does this coating do?
> Also, I may buy another pair of glasses to use as reading glasses.
> These glasses would be used for reading, computer use, etc. Would
> anti-glare or anti-reflective coating be useful for these glasses?
> I have had driving glasses and reading glasses before, and I don't
> think I've ever had anti-glare coating before. I'm not sure, but I
> don't think that not having this coating has been a problem.
> The coating can cost as much as an extra $75 for each pair of glasses.
> So, is the coating worth the price?

> Thanks for any information.
> John