During her Benghazi testimony, Hillary Clinton was wearing some unusual glasses. One lens appeared to have defraction grating like a fresnel lens. It was spec

During her Benghazi testimony, Hillary Clinton was wearing some unusual glasses. One lens appeared to have defraction grating like a fresnel lens. It was speculated (and later confirmed I believe) that this was to treat double vision she was having as a result of a concussion. It seems that such a pair of glasses could be made to help with this person's situation. http://www.doctorsvisioncenter.com/hillary-fresnel-lens/ http://www.doctorsvisioncenter.com/hillary-fresnel-lens/