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#1 |
Makes some feel uncomfortable
Join Date: Dec 2005
Posts: 10,346
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Liking that. Maybe basic/choice/superior?
Brian? Bri-an? That's just messed up, man. ![]() Then I'd have to kill anyone who chose hobo. I'm focused (heh heh) on Progressive Addition Lens designs and anti-reflective coatings. There are about 170 different PAL designs on the market. Some were designed in the seventies, are relatively inexpensive, have very distorted peripheries, and low user acceptance. Some are cutting edge technology, are relatively expensive, have a great amount of usable lens, and high user acceptance. And of course there are products between the extremes. There are a couple dozen anti-reflective coatings. They all reduce reflection to less than 1%. Low end coatings fail easily (scratch, craze, haze, orange peel), are difficult to clean, attract dust, and smudge easily. Over the last 10 years, the industry has added improved scratch resistance, substrate matching (to reduce failure), a hydrophobic layer (to improve cleanability), an oleophobic layer (to resist smudging), and an anti-static treatment (to repel dust). I verbally explain these features/advantages/benefits to patients, and I have visual aids to help them understand. What prompted me is that there is now a brand new (year old) completely different method of making PALs, called digital or free form surfacing. PALs have traditionally had the near vision power molded on the front of the lens, and a patient's distance Rx was cut into the back surface of the lens using what amounts to a cup lathe. With digital lenses, the front surface is spherical, and the distance and near vision powers are cut into the back surface, one "pixel" or point at a time using what amounts to a router. So now I have the traditional PAL categories of good, better, best, and digital/free from. But people ask "well if the best are the best, why are the digital lenses more expensive". And I have to start all over again. Sorry for the long ass post.
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#2 | |
™
Join Date: Jul 2003
Location: Arlington, VA
Posts: 27,717
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Quote:
It's easier to do a sprayed popcorn ceiling, but a nice plaster ceiling is much higher quality. I expect easier to be cheaper. |
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#3 |
Makes some feel uncomfortable
Join Date: Dec 2005
Posts: 10,346
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Yes, it does. There's less distortion, more usable lens. Lenses can be optimized, to correct for higher order lens aberrations, and can be personalized - tailored to the users needs.
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#4 |
trying hard to be a better person
Join Date: Jan 2006
Location: Brisbane, Australia
Posts: 16,493
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basic/value/superior
You'd be guaranteed to sell more in the middle sector because no one wants just the basic, and everyone wants value, but not everyone can afford superior. ![]()
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Kind words are the music of the world. F. W. Faber |
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