A case of a metal foreign body in the ethmoid sinus is reported. The patient was a 43-year-old man. While he was operating a machine for cutting scraps, the machine broke and a piece of scrap pierced his face through the right inferior palpebra. The patient visited the department of ophthalmology because of visual disturbance. Adduction of the eyeball was disturbed and diminution of visual acuity (0.01) was observed. The fundus could not be examined. X-ray examination revealed a metal foreign body in his right ethmoid sinus.
In order to remove the foreign body, the ethmoid sinus was opened extranasally under local anaesthesia. After removing the foreign body successfully by the authors, the medial straight muscle was adducted by an ophthalmologist. Afer the surgery, eyeball movement improved. However, visual acuity did not improve because of hemorrhaging in the retina and the vitreous body andof a macular hiatus.
Clinical characteristics of this case are discussed mainly concerning the site, ophthalmologic signs and kind of foreign body. The length of time before the removal is also discussed with reference to the previous literature over the past 21 years.
In this case, CT examination was not helpful to determine the site of the foreign body because the metal body caused a strong dispersion of X-ray.
View full abstract