Nature of service: Replace left lens on existing pair of glasses Time frame given by Singer Specs: 7-10 days. It took 34. Alleged Problems: Application of Anti Reflective Coating failed 3 to 4 times causing massive delays. Singer Spects contracted these out to Three Rivers Optical (who contracted it out to a third and then fourth source which were unnamed.. in fact when I spoke with Michael at Three Rivers he not only REFUSED to give me the names, but REFUSED to give me ANY information at all. Very unprofessional and unacceptable... read full review »