We report a case with bacterial endogenous endophthalmitis caused by Streptococcus bovis, developed after colonoscopy, which had a poor outcome and resulted in evisceration. Bacterial endogenous endophthalmitis is a rare, but serious ocular disease that occurs when bacteria from a primary focus reach the eye. It requires a very early diagnosis. A suitable and specific treatment with intravenous and intravitreal antibiotics may prevent a bad visual prognosis in some cases.