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- From: gove@radar.bu.edu (Alan Norwood Gove)
- Newsgroups: misc.consumers
- Subject: Re: eyeglasses: want info about anti-reflective coatings
- Message-ID: <GOVE.92Nov18175512@radar.bu.edu>
- Date: 18 Nov 92 22:55:12 GMT
- References: <22486@drutx.ATT.COM>
- Sender: news@bu.edu
- Organization: Boston University Center for Adaptive Systems
- Lines: 29
- In-reply-to: bew@druwa.ATT.COM's message of 17 Nov 92 19:48:25 GMT
-
- >I got an anti-reflective coating for my clear eyeglass lenses almost
- >two years ago. I should preface my remarks that my prescription is
- >for -7.0 diopters; I don't know whether that has a bearing on the
- >following. I don't like the anti- reflective coating and will not
- >get it on my next set of lenses in 1993. Reasons: 1) there are still
- >some reflections although greatly reduced; 2) the most important
- >reason: the coating causes chromatic aberration (I often see
- >a blue band on one side of an object and a yellow band on the other.
- >I found it extremely annoying at first although it is less
- >annoying now.); 3) makes the lenses harder to clean. (I used to
- >be able to clean my lenses with warm water and a soft towel.
- >Now I must use soap, water, and towel) These are my opinions;
- >I suggest you consult with your optician for all the disadvantages
- >before opting for the coating.
-
- Like the poster quoted above, I often see a yellow band bordering
- objects. I haven't seen a blue band, but I'll look for one tonight
- after taking my contacts out. I should note that I also need strong
- lenses (-10 diopters). Overall, I'm not happy with the
- anti-reflective coating. Not only are they harder to clean, but they
- seem to get dirty (and oily) much faster than other glasses I've
- owned. The result is lots of reflection off the dirt particles, and
- blurring from the oil, so that I feel my vision is worse with the
- coating than without it.
-
- I'm glad to hear some people are happy with it, though.
-
- alan
-
-