A rare complication after extracapsular surgery of the cataract, blood effusion is often a fortuitous discovery when a drop in visual acuity occurs. The subject reported herein is a 76-Year-old patient who presented an endocapsular blood effusion with no liquid level 1 Year after the extracapsular surgery of the cataract, discovered while examining a decrease in visual acuity. Questioning led to the discovery of eye trauma due to Nd: YAG laser posterior capsulotomy 3 Months before, which had progressed spontaneously and favorably for 2 Months, with a reduction of the effusion and better visual acuity. The bleeding seems to have come from a vascular injury due to a direct contusion, with blood possibly coming from the ciliary body, the iridocorneal angle, or the vitreous. The liquid effusion may have been caught at the back by the implant and enclosed in the area located between the capsular bag and the anterior hyaloid, without intravitreous diffusion. Most of reported cases in the literature discuss observations made on an intact posterior capsule, which appeared during or after close surgery. The treatment was simple supervision. Some Authors propose a Nd: YAG laser capsulotomy in case resorption is too slow.