A small number of cases of bacterial endophthalmitis due to Streptococcus pyogenes, a Gram positive organism, have previously been reported. In this case, rapidly progressive Streptococcus pyogenes endophthalmitis was developed five years after cataract surgery which had been. The previous cataract surgery was combined with intraocular lens implantation by trans-scleral suspension technique. Treatment included enucleation and intravenous antibiotic injection. In this case of delayed Streptococcus pyogenes endophthalmitis after extracapsular cataract extraction. It seems probable that progressive erosion of the suture material resulted in exogenous endophthalmitis.