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home:lifestyle:light:prescriptionsunglasses [05.21.2009] – paulalbert | home:lifestyle:light:prescriptionsunglasses [02.28.2011] – [Members' experiences] joyful | ||
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+ | ====== Prescription sunglasses ====== | ||
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+ | Marshall Protocol (MP) patients who are [[home: | ||
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+ | Once you have experienced the incredible difference that good sunglasses can make, you may want to have a good set of prescription lenses made. The best lenses are made by [[http:// | ||
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+ | Of course - if you are lucky enough to still have 20:20 vision you can buy the 73mmx2mm "Plano Lens Blanks" | ||
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+ | Look around for a pair of frames with large lenses and leather side pieces to keep out light from the sides. Don't bother too much about the quality of their lenses since you will be discarding them. I use the Aviator style Ray-Ban L2846 and L2821 frames (62mm) with the custom leather ' | ||
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+ | When you have the frames then you have to find an optometrist who can fit them with the lenses for you. If you can afford the [[http:// | ||
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+ | The optician in my local Walmart has consistently produced the best prescription for me. I then have a cheap pair of normal glasses made to check the prescription, | ||
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+ | //**Trevor Marshall, PhD**// </ | ||
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+ | Typical 60mm large frame Alpine sunglasses | ||
+ | with leather side-shields (click image for more information) | ||
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+ | --------> | ||
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+ | For many years I used Zeiss Tital 1.7 U85 GE (a very nice glass lens) with double density (97.5%) U85 Umbra coatings and double anti-reflective layers as driving lenses (in RayBan Aviator Frames). I found I still had to put two layers of polarized clip-ons over the top, and, of course, I had the Ray-Ban European style leather side pieces designed for those frames, which kept out (nearly) all light from the side. | ||
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+ | These lenses were a little dark for indoors (even without the clip-ons), where I used the highest-density of the Skylet Sport polycarbonate series. | ||
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+ | About 15 yrs ago, I became less light sensitive and I wanted folks to see my eyes at meetings. I found [[http:// | ||
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+ | You can get these lenses in Oz. I had mine mounted into large Aviator-style Ray-ban frames. In a few years you can use them for driving glasses. | ||
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+ | //**Trevor Marshall, PhD**// </ | ||
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+ | Some MP patients (those who work with computer graphics, etc.), cannot use NoIRS because of color distortion. Zeiss lenses may make it possible for these patients to be able to have adequate eye protection and maintain necessary function. | ||
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+ | Other prescription sunglasses available from [[http:// | ||
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+ | www.vision.zeiss.com.au | ||
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+ | ===== Members' | ||
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+ | I don't quite know where to make this post regarding sunglasses but some of you may know. Since this is an area on lighting, I thought some of you might be interested in my experience. | ||
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+ | After being made fun of by my family because of my " | ||
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+ | http:// | ||
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+ | By the way, if you are reading this Trevor, thank you for all your hard work and giving me my eyes back. We were all worried that I would soon be on disability and not driving anymore. | ||
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+ | // | ||
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+ | I have prescription glacier glasses that have about 14% visible light transmission that I would wear under my 2% NoIR Spectrashields for outdoor use. Now, my eyes are becoming less sensitive and I don't usually need both. I never had to wear three sets of lenses, just two. | ||
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+ | By using a combination of my light indoor prescription sunglasses (40%), my darker glacier glasses, and the strength of NoIRs to wear over them I have had a wide range of options for light sensitivity and light conditions. I tolerated driving in bright sun with the total visual light transmission down to just 0.28%. I really needed this much reduction. This level of reduction is unheard of in most glasses makers, since few people have eyes that are so sensitive. | ||
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+ | My Noirs work perfectly as far as the MP goes. But as far as my work goes they fall a little short. I work in a " | ||
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+ | I explained all the above to the optometrist, | ||
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+ | My optometrist also said that by using the anti-reflective coatings and very carefully choosing the frames so that the lenses were as close to the surface of my eye and as large as possible, that the angle that light incident to the surface of my eye (from the sides) would not be able to enter it but would be refracted away and/or absorbed by the anti-reflective coating. | ||
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+ | //**Patrick Burke**// </ | ||
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+ | My Corning CFP " | ||
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+ | However, I did find them to be considerably better than NoIRs at stopping the negative effects of fluorescent tubes indoors. Obviously, this is of little use in most circumstances, | ||
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+ | I had my best all round results with Noir 35's and contact lenses. | ||
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+ | //**Patrick Burke**// </ | ||
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+ | {{tag> | ||
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+ | ===== Notes and comments ===== | ||
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+ | *Legacy content | ||
+ | * http:// | ||
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+ | =====References===== | ||