Retrobulbar Air Injection with Planigraphy

All too frequently the ophthalmologist finds himself at a loss for adequate methods of diagnosis of orbital space-taking lesions. The effective treatment of such patients is greatly aided by the proper localization of the pathology. Various attempts have been made to localize orbital tumors more accurately or to confirm their presence. The exploration of any orbit presents many difficulties unless a definite tumor mass is palpable or routine neurological and x-ray examinations offer suggestions as to localization of the lesion. Even in such cases more exact localization and determination of the limits of extension of the lesion would be of value. The introduction of a contrast medium into the orbit has been advocated by several investigators as a means of establishing the presence and location of space-occupying lesions. Criteria which should be satisfied in selecting a contrast medium include the following: (1) safety for orbital tissues, (2) uniform diffusion throughout