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Medical Forum / General / Vision / December 2007did I order the right eyewear?
How stupid of me to ask AFTER placing an order for eyewear. Just yesterday, I went to Cohen's optical. The frames are exactly what I wanted. But second thoughts linger over the lenses I've purchased. I opted for lenses with Cristal ( sp? These are supposed to provide antireflective coating with scratch/fingerprint resistance. ) and Transitions ( photochromic, is supposed tint my lenses in sunlight but return clear when indoors ) coatings. The lenses alone costed me a bit shy of $400 and I can't help but wonder if I went overboard on this one. Two relevant things about me: I am a dentist, and I am a heavy LCD screen user. Apparently, color accuracy and visual acuity are important to me. Will I experience problems with color or anything else with vision when using these glasses? From my knowledge, the Transitions part of the lenses will eventually wear out. When they do wear out, will I then experience problems with color or visual accuracy? Info would be appreciated. Thanks. > How stupid of me to ask AFTER placing an order for eyewear. > [quoted text clipped - 18 lines] > > Info would be appreciated. Thanks. The AR coating is Crizal or Crizal Alize. The Crizal Alize is easier to keep clean than regular Crizal. The transitions part of the lens is a dye, not a coating. I am not an expert on these, but there are various versions (Transitions V is the best). Transitions lenses are never as clear indoors as plain lenses, so there is going to be some color distortion and some loss of light compared to a clear lens. They come in grey and brown, so you may want grey if you want less color distortion. However, brown lenses usually work best outdoors in sunlight because the block more blue light and have better contrast outdoors than grey lenses. Personally, I would opt for a different pair glasses for outdoor and indoor use. Crizal and Transitions are both name brands with good reputations. $400 for those premium brands isn't scalping. Transitions Gray has a pretty neutral effect on color balance. Even so, both gray and brown lighten almost completely, away from UV light. Complaints of color "distortion" are rare with either product. -MT > Crizal and Transitions are both name brands with good reputations. $400 for > those premium brands isn't scalping. [quoted text clipped - 5 lines] > > -MT Suppose I get the task of, say, choosing a porcelain shade matching the color of another object. ( done indoors ) Will these chosen lenses interfere with my ability in choosing the right value, chroma, and hue? ( color ) Will they ever be a problem when the lenses loose their photochromic ability in the future? > Suppose I get the task of, say, choosing a porcelain shade matching > the color of another object. ( done indoors ) > Will these chosen lenses interfere with my ability in choosing the > right value, chroma, and hue? ( color ) If you're comparing side-by-side, IMO no. It's pretty difficult to imagine a problem with gray photochromic in its lightest state. Neutral-density filters are widely used in photography without disturbing color balance. Brown is another story but you don't say which Transitions you chose. No matter, in the lightest state even brown wouldn't prevent you from matching hues in side-by-side comparisons. > Will they ever be a problem when the lenses loose their photochromic > ability in the future? The gray Transitions don't discolor with time, that I noticed. > your feedback is different from what Mark A had written. > Did you both personally try transitions? There are other topics Mark and I don't agree on, but I didn't say anything outright contradictory. The incidence of "color distortion" complaints is very small, with Crizal or Transitions. I wore Transitions once. They lightened to about 90% transmittance, or better. They didn't get dark enough in sun, so separate sunglasses always make more sense for me. -MT > Crizal and Transitions are both name brands with good reputations. $400 for > those premium brands isn't scalping. [quoted text clipped - 5 lines] > > -MT your feedback is different from what Mark A had written. Did you both personally try transitions? "dacconverter" <seagate1556@hotmail.com> wrote in message news:9ea915d5-6a1f-44bc-b8fc- > your feedback is different from what Mark A had written. Did you both > personally try transitions? Not really. I said that grey is more neutral than brows, Regarding complaints, I never said people complain about brown, it is just that there will be some color inaccuracy. Most people don't care or get used to it (the same way we get used to the difference between a white florescent light and a warm incandescent light). The brain adapts to the differences. I wear dark brown sunglasses and after a short time I don't even notice the brown tint. But if you are going to be shade matching crowns, etc, then that might be another story (I am not sure what to tell you). > But if you are going to be shade matching crowns, etc, then that might be > another story (I am not sure what to tell you). I just went back to the opticians and asked that they cancel the order for Transitions lenses. They started to look annoyed when I told them I should have been warned about future tinted discolorations ( more so important due to my profession ) and minimal effectiveness when driving. I was a good customer and all; I paid the entire balance even though the glasses won't be ready until in 7 days. They said they will inquire their manager on how to handle the difference in price, now that I canceled the Transitions. I hope I'll be given a full refund for the Transitions coatings. For my circumstances, I don't think it's fair for me to get anything other than a refund for those coatings. In the meantime, I've gotten a pair of temporary eyewear. It's supposed to be the same prescription that I always had. But I'm feeling dizzy in these and I hope these lenses were made properly. |
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