[The search for the right place and for optimal fixation of an intraocular lens (author's transl)].

Whereas by far not all properties of the crystalline lens can be realized with an artifical intraocular lens, maximal stability of such a device is its most important feature. The latter can be achieved by the adherence of the lens to the capsular membrane, left behind after extra-capsular cataract extraction. In this way the suspension system of the crystalline is used for the fixation of the intra-ocular lens. The stability of the contents of the eye viz. of the vitreous, of the aqueous humour, and of the iris diaphragm, is maintained to a high degree. Stability of the iris diaphragma is achieved when irido-capsulo-lenticular adhesions are allowed to develop, but the iris diaphragm can also be stabilized by support from the optical part of a modified capsular lens in the posterior chamber.