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Newsgroups: sci.med.vision
From: Jenny06427 <lite...@googlemail.com>
Date: Sun, 30 Mar 2008 05:20:35 -0700 (PDT)
Local: Sun, Mar 30 2008 10:20 pm
Subject: Re: Stay away from "vision educators"
>Bates: "That glasses cannot improve the sight to normal can be very simply It's still not the same as someone with perfect sight seeing, yes more >demonstrated by looking at any color through a strong convex or concave >glass. >It will be noted that the color is ALWAYS less intense than when seen with >the >naked eye; and since the perception of form depends upon the perception of >color, it follows that both color and form MUST be less distinctly seen with >glasses than without them." [emphasis mine] >I don't get the same results. Most of my patients see better color and form >_with_ their glasses than without them. Minus lenses minify and have barrel >distortion, but that doesn't outweigh seeing forms you can't see without >them, >seeing sharp borders between colors where they aren't blurred together. functional >Bates: "Even plane glass lowers the vision both for color and form, as Disagree look through any glass less quality of color >EVERYONE >knows who has ever looked out of a window." >I don't get that either. There's a difference, but I don't think "everyone" >notices it. Maybe glass is better these days? Spectacle lenses are clear on >the >edges, not green like windowpanes. Color distortion is measured by >spectroscopy >and the spectrograph of CR-39 is remarkably flat. : "As a matter of fact the sight ALWAYS improves, to a greater or less >degree, when glasses are discarded, although the fact may not always be MAybe we just become accustomed to blurriness? Sure seems like a >noted. " >I don't get the same result. If you can't "note" improvement, where is it? >Refractive error simply does not go away when they take off their glasses. >Ask >patients who lose their glasses and make do without them for three months. >Their >refractions are not generally better. Every eye doctor can document anecdotes >that disprove this gross generalization, and very few to support it. little rebound effect. Who did without their glasses for 3 months, most people run right out? >Bates: "That the human eye resents glasses is a fact which NO ONE would Ask them whether they'd rather see without them no problem. Yes most >attempt >to deny." >I would. Ask a hyperope or presbyope if his eyes feel better with or without >glasses. everyone would prefer not to need glasses >Bates: "The strong concave glasses required by myopes of high degree make all People become accustomed and function alright, there is still changes >objects seem much smaller than they really are, while convex glasses enlarge >them. - These are unpleasantnesses that CANNOT be overcome." >But people overcome them all the time. in the way things are seen compared to perfect light >Bates: "ALL glasses contract the field of vision to a greater or less How well can you see out of corner of your eye with glasses. It's all >degree." >Patently false. Minus spectacle lenses can increase the field of vision. They >don't always, but they certainly can be made to. Minus lenses minify, and >more >objects are "drawn into" the field. blurry and lose attention to this field focusing only on part glasses make artificially clear. >Bates: "It has been demonstrated, however, that the lens is NOT A FACTOR, I already posted the studies that it's not all the lens either. >either >in the production of accommodation, or in the correction of errors of >refraction. Therefore under NO circumstances can there be a strain of the >ciliary muscle to be relieved." >Patently false. No contribution at all? Ask any aphake. Ask yourself after >cycloplegia. Ask any eye surgeon - they pluck 'em out all the time and >usually >the other parts still work. >Bates: "It is fortunate that many people for whom glasses have been Minus lenses make the eyes worse some of us think. Otis just posted >prescribed >refuse to wear them, thus escaping not only much discomfort but much INJURY >to >their eyes." >This is particularly treacherous if they drive. Bates didn't have to meet his >patients on a dark rainy highway with 120 mph between them. I can't find this >INJURY he's talking about. about this better than I can. Got to go don't have time to address any more, will do changes in refraction later. You must Sign in before you can post messages.
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