The two main types of lymphoma are Hodgkin’s disease and non-Hodgkin’s lymphoma. Primary intraocular lymphoma is almost always a non-Hodgkin’s B cell lymphoma. Most people with primary intraocular lymphoma are elderly or have immune system diseases such as AIDS (acquired immunodeficiency syndrome). Primary intraocular lymphoma often occurs with lymphoma of the brain, called primary central nervous system lymphoma (PCNSL).

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