Ocular ultrastructural study in a fetus with type II glycogenosis.

The general pathological and ocular studies in an aborted fetus with type II glycogenosis revealed the widespread lysosomal storage of glycogen. Obvious lesions are observed in the viscera, in the skeletal and ocular muscles, and in all ocular tissues except the pigment epithelium of the retina. Brain and heart are relatively spared. Conjunctival and skin biopsies have a diagnostic importance, since specific alterations are evident early in the course of the disease.