Lens Fungus

Discussion in 'Miscellaneous Equipment' started by fparnold, Apr 18, 2005.

  1. fparnold

    fparnold Member

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    Basic question: is lens fungus any one particular species, such as has been observed for contact lenses, or is it a variety of opportunistic fungi? I'm curious as to whether etching the glass is a byproduct, or whether it's actually solubilizing the silica for its own purposes.
     
  2. BradS

    BradS Subscriber

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    Hmmmm....Excellent question.
     
  3. John Koehrer

    John Koehrer Subscriber

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    Fparnold,
    I'm not entirely sure the fungus actually etches the glass or the coatings of cement used to assemble the groups. Over the years I've cleaned quite a bit of fungus from lenses & have not seen etched glass. I have had to recement a couple of pieces & it's kind of a pita. I have also removed internal coatings to get rid of the stuff with no complaints.
     
  4. Ole

    Ole Moderator Staff Member Moderator

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    Having seen lichen growing on quartz crystals, nothing really surprises me where fungi are involved. If a lichen (which is a sumbiosis between a fungus and an alga) can etch quartz...