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    Re: Polarising Filters
    From: Michael Daly
    Date: 2007 Nov 26, 14:09 -0500

    Ken Muldrew wrote:
    
    > I have attached a short article from Ophthalmic Physiology & Optics from
    > 2001 in which damage from the sun is discussed.
    
    They dismiss UV as a factor in damage - please note that this is in
    reference to _retinal_ damage.  UV exposure of the cornea remains a
    risk; it will tend to accelerate the rate at which the cornea yellows
    and can cause burns to the corneal tissue as well (just as UV causes
    skin to sunburn).
    
    I find this article at odds with some of the research results of a
    former colleague (Chou) who had a specific interest in eclipses.  Its
    dismissive tone tends to make me want to take its conclusions with a
    grain of salt.  Chou's advice is somewhat more conservative and is
    experience-based (has has observed two saros cycles worth of eclipses,
    with several in the same series); he is an eye-care professional,
    professor and researcher at a local university.
    
    Mike
    
    
    
    
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