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    Re: Polarising Filters
    From: Ken Muldrew
    Date: 2007 Nov 26, 10:21 -0700

    On 24 Nov 2007 at 0:29, George Huxtable wrote:
    
    > I recall having read, but don't recall where, that simple local heating,
    > from the Sun image falling on the retina, is a cause of lasting damage to
    > the retina by short-term ablation. That is, it fries a hole in it. Can
    > anyone offer more information about that?
    
    I have attached a short article from Ophthalmic Physiology & Optics from
    2001 in which damage from the sun is discussed. It's not too large at 58k
    so hopefully this won't be too much of a burden on those who are not
    interested. The executive summary is that naked eye damage is
    photochemical, not related to heat denaturation.
    
    Ken Muldrew.
    
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         Date:  26 Nov 2007, 10:13
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