CHIASMAL ARACHNOID1S

Abstract

To many oculists chiasmal arachnoiditis is a nebulous entity, considered in differential diagnoses of chiasmal lesions but seldom encountered in practice. Duke-Elder (1949) describes the pathology. Proliferative changes in the arachnoid bind down the chiasma and optic nerves, compressing them, cutting into them, or infiltrating them along their connective tissue septa.