In the submitted paper the authors analyze data from a group of patients with diseases of the orbit treated at the First Ophthalmological Clinic, Faculty Hospital, Medical Faculty Comenius University Bratislava between the beginning of 1980 and the end of 1992. During the mentioned period 156 patients with orbital diseases were hospitalized or put on record. The 13-year group of patients is evaluated from the aspect of causes of exophthalmos, age distribution, lateralization of the disease and different diseases by sex. Special attention is paid to a sub-group of 70 patients with tumours of the orbit.