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--- home:lifestyle:light:prescriptionsunglasses [08.15.2009] – joyful
+++ home:lifestyle:light:prescriptionsunglasses [01.16.2011] – external edit 127.0.0.1
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+====== Prescription sunglasses ======
+Marshall Protocol (MP) patients who are [[home:lifestyle:light:photosensitivity|photosensitive]] must protect their eyes from the [[home:lifestyle:light:photosensitivity#Effects_of_light_in_the_eyes|effects of light]]. [[home:lifestyle:light:noirs|NoIR]] or [[home:lifestyle:light:stylishglasses|Bolle]] sunglasses are recommended. **Prescription sunglasses** are another option, however, those sunglasses must meet the specifications listed for NoIRs with respect to amount and types of light blocked.
+<blockquote>
+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://www.sarcinfo.com/zeiss.htm|Carl Zeiss]]. They will be very expensive, but you wear them everywhere and the comfort is surely worth it.
+Of course - if you are lucky enough to still have 20:20 vision you can buy the 73mmx2mm "Plano Lens Blanks" from NoIR. You need part numbers 01L and 07L (equivalent to 901 and 907, respectively). Unfortunately these are not available to prescription, just as plain filter lenses.
+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 'Alpine' side-shields that are available in Europe. The bottom of the large frame sits on my cheeks, cutting out most of the light which might enter from ground and shirt reflections.
+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://www.zeiss.de/de/ophtalmic/comp/home_e.nsf/6f2a76c25f0237fbc12566fe003b25ff/59dab48462214477c1256ac70023f799?OpenDocument|Zeiss Skylet Sport lenses]], then I recommend getting anti-reflective coatings on both the front and the back. The standard Skylet Sport density is suitable for indoors use, but a [[http://www.zeiss.de/de/ophtalmic/comp/home_e.nsf/78be232b5368b1b2c12566fe003b2602/2a09556ecbee18cec1256aa70031b6d6?OpenDocument|double density 97.5% coating]] will be needed for driving. Make sure you get glass lenses for driving, as the Polycarbonate do not attenuate the InfraRed light. [[http://www.zeiss.de/de/ophtalmic/comp/home_e.nsf/QuickbarWWWintern/3810F55DCE714595C1256B3E0053A50A|Zeiss Tital 1.7 U85 GE]] is a very nice glass lens that has been made for me with [[http://www.zeiss.de/4125680F0053A38D/InhaltWWWIntern/98892A9014BC1AE0C1256AA7003075AA|double density (97.5%) U85 Umbra]] coatings. This works out fairly well. I use Progressive Multi-focals ("[[http://www.zeiss.de/de/ophtalmic/comp/home_e.nsf/6f2a76c25f0237fbc12566fe003b25ff/8495a1a7b6d90365c1256a1100360721?OpenDocument|Gradal HS]]") in the Skylet Sport polycarbonate for inside use. Only the single vision is available in the glass (which is what I use when when driving).
+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, and then send it to my optometrist in Denmark. He gets the lenses made in Germany, Austria and Italy. I live in California. I have found it no trouble to send the prescription halfway around the world and wait for the glasses in the mail. The ability to live and function knowing that each day will be fully productive far outweighs any inconvenience.
+//**Trevor Marshall, PhD**// </blockquote>
+Typical 60mm large frame Alpine sunglasses
+with leather side-shields (click image for more information)
+-------->insert photo
+<blockquote>
+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.
+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.
+About 15 yrs ago, I became less light sensitive and I wanted folks to see my eyes at meetings. I found [[http://www.zeiss.de/de/ophtalmic/comp/home_e.nsf/6f2a76c25f0237fbc12566fe003b25ff/59dab48462214477c1256ac70023f799?OpenDocument|Zeiss "clarlet Skylet fun" lens]] adequate. I guess you would classify them as "50%" lenses; they are designed just for protecting healthy eyes from glare, and they do that real well.
+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.
+//**Trevor Marshall, PhD**// </blockquote>
+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.
+Other prescription sunglasses available from [[http://opticsdirect.com/marshallprotocol.aspx|Optics Direct]].
+www.vision.zeiss.com.au
+===== Members' experiences =====
+<blockquote>
+I ordered pair of prescription Bucci Kamet sunglasses from opticus.com. They sent a pair of Julbo teardrops, and the Buccis to test. The Buccis aren't on their web page yet, but they suggested them as they have a better fit on the side pieces more suitable to the Marshall Protocol. I had my local optician measure them.
+[[http://www.hidalgos.com|Hildagos]] can put mirror-coated or non-mirror-coated glass Kontraster prescription lenses into most frames that you supply (even bifocal now). Just check with them and order catalog, the new one talks about the Marshall Protocol. Their web site has a lens transmission data section and a place to get their catalog.
+[[http://www.opticus.com/|Opticus Inc.]] has a wide selection of glacier glasses to look at and they make prescription lenses as well.
+[[http://www.campmor.com|Campmor]] has cheap glacier glasses that you can replace lenses elsewhere or wear indoors.
+//**P. Bear**// </blockquote>
+<blockquote>
+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.
+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.
+//**Chris**, MarshallProtocol.com// </blockquote>
+<blockquote>
+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 "retail" centred environment where looks and image are everything. I am responsible for much of that "look". And as much as I hate to admit it it's very hard to be taken seriously at a meeting with rich, healthy, image-conscious, prospective clients whilst wearing a pair of NoIR fit-overs. I have to take them off sometimes just for image and sometimes more necessarily to make very precise subjective judgements regarding colours and surface finishes etc.
+I explained all the above to the optometrist, and he has ordered me some medical-grade lenses with extra anti-reflective coatings on both sides. They stop UV, blue and IR and near IR. He says they are the gold standard of even medical lenses and will allow less energy to enter my eye and have better colour rendition than even Zeiss and NoIR. They are photochromic and range from 6-18%. They are intended to be worn outside, but, for me, they will be for inside in my darkened house/office, mainly for viewing CRT's and also for moving around my place of work, which is lit by flourescents. I hope that they will help me out when the need arises. If they don't, I will simply have to carry on with the NoIRs.
+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.
+//**Patrick Burke**// </blockquote>
+<blockquote>
+My Corning CFP "GlareCutters" are prescription photochromic lenses. I don't wear them any more or my NoIRs, as my eye light sensitivity is negligible now. My experience of wearing them when I was light sensitive is limited in that I never really wore them outside in open sunlight. I suspect, however, that they would not be as good as NoIRs outside as, to me, they did not appear to block IR.
+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, as most rooms have at least some proportion of sunlight. But they did have their uses, indoors at night and in rooms that were totally artificially lit. The other downside is that they do not have the full wrap-around coverage of other alternatives, and I had to wear horrible-looking side shields. They are a little dark for indoor use, even in the lightened stage, and are somewhere between the 2% and 10% NoIRs. They are definitely a lot better than nothing.
+I had my best all round results with Noir 35's and contact lenses.
+//**Patrick Burke**// </blockquote>
+{{tag>light}}
+===== Notes and comments =====
+ TECHEDIT
+  *Legacy content
+ * http://www.marshallprotocol.com/view_topic.php?id=4&forum_id=2&jump_to=14371#p14371
+=====References=====

home/lifestyle/light/prescriptionsunglasses.txt · Last modified: 09.14.2022 by 127.0.0.1