[Late hypotonia after posterior chamber lens implantation].

Case reports of two patients who developed a sudden hypotony with visual loss after an uneventful extracapsular cataract-extraction with posterior chamber lens implantation. There is evidence for the reason to be a contraction of the posterior capsule. This may lead to a traction at the ciliary body and a ciliochoroidal detachment. The rapid improvement of vision and intraocular pressure after Nd-YAG-Laser capsulotomy supports the postulated theory of this rarely discussed complication of intraocular lens implantation after extracapsular cataract-extraction. In this situation we recommend a capsulotomy in due time.