Paper polarizing glasses with a 0.9 log filter attached to the the right lens.  Reverse the frames and the filter is now over the left eye.  Used with the Anblyometer or Equalizer to amplify an existing Afferent Defect, i.e., Amblyopic Defect or Optic Nerve Defect,

Parity Challenge Polarizing Glasses

$39.00Price
     

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