[The anterior hyaloid membrane of the vitreous body in congenital ectopic lens].

Congenital, bilaterally symmetrical dislocation of the lens within the posterior chamber is referred to as lens ectopia. The behavior of the anterior hyaloid membrane in congenital lens ectopia has not been considered hitherto. The anterior hyaloid membrane in the aphakic area of the pupil is intact or ruptured and the ciliovitreal connex in the region of the lens dislocation may be normal or absent. If surgery is planned because of the dislocation, a knowledge of biomicroscopic details of the anterior hyaloid membrane might be useful.