Objective To retrospectively assess the clinicopathological characteristics of orbital granular cell tumours (GCTs).Methods A non-comparative review of the clinical characteristics,imaging,histopathological features,management,and prognosis of five cases of benign GCT and one case of malignant GCT (MGCT)was conducted,along with a review of the English language literature.Results Among the six cases,four tumours were adherent to the extraocular muscle (EOM),and three tumours to the optic nerve (ON).Morphologic examinations revealed polygonal cells containing periodic-acid-Schiff-positive eosinophilic granules.