Ocular involvement in primary immunodeficiency diseases.

Primary immunodeficiency diseases (PID) are a group of inherited disorders characterized by recurrent infections, and in many cases autoimmunity and malignancies. A number of PID patients suffer from a variety of ocular manifestations. Although these associated ocular features are not common, awareness combined with better understanding of the contributing mechanisms will allow prompt diagnosis and specific treatment, leading to reduction or prevention of serious visual morbidities.