Fig. 50. The effects of traction of fibrous membranes. A. A vitreous strand is attached to the posterior corneal aspect of a cataract incision. B. The strand extends to the region of the macula. C. Posterior to the area of vitreoretinal attachment (arrow), a fibrous membrane covers the internal surface of an artifactually detached retina, producing multiple small fixed folds. This same process occasionally appears apparently spontaneously in nontraumatized eyes to produce “cellophane” retinopathy. (Periodic acid-Schiff stain; × 16.)