To the Editor.
—Winkler et al, in an article entitled "Orbital Metastasis From Prostatic Carcinoma: Identification by an Immunoperoxidase Technique" in the August Archives (1981;99:1406-1408), reported an unusual case of prostatic carcinoma that was seen initially with an orbital metastasis. Although this circumstance is undoubtedly rare, actual metastasis to the orbit is probably more common than was inferred.
Report of a Case.
—A 54-year-old man was seen initially for a routine examination on Nov 20, 1980. His condition was diagnosed as cancer of the prostate gland in 1979, and, subsequently, he underwent radical prostatectomy. The next year, osseous metastases developed, and orchiectomy was performed, with remission of pain. In July 1980, there was involvement of the lower thoracic spine, which responded to decompressive laminectomy and radiotherapy (4,000 rad).Findings from an ocular examination indicated the visual acuity corrected to 20/20 OD and 20/25 OS, Jaeger 1 OU. There were mild