Temporal Hemianopsia of Healthy Eye in a Patient with Contralateral Silicone Oil Filled Eye

ABSTRACT

PURPOSE: To report a case of temporal hemianopsia of a healthy eye occurring in the contralateral silicone oil-filled eye due to migration of silicone oil into the optic chiasm and lateral ventricle. CASE SUMMARY: A 56-year-old man visited our clinic with temporal hemianopsia for 10 days in the left eye. Three months before, the patient had presented with decreased vision and ocular pain in the right eye as well as a headache. The patient underwent vitrectomy at another hospital for the management of retinal detachment occurring in the right eye 8 years earlier. In addition, for recurred retinal detachment, reoperations were performed twice with silicone oil injection. Funduscopy revealed findings such as glaucomatous optic disc and an intraocular pressure of 54 mmHg in the right eye. On visual field examination, the temporal hemianopsia was detected in the left eye. Under the suspicion of cerebral lesions, a magnetic resonance imaging (MRI) examination was performed. On the right side of the optic chiasm and the suprasellar region, materials were present whose signal intensity was identical to silicone oil in the right vitreal cavity. During a follow-up, the migration of silicone oil into the lateral ventricle and the alteration of its location with the positional change were observed. CONCLUSIONS: In a patient who received silicone oil injection following vitrectomy, the silicone oil migrated to the optic chiasm and induced the occurrence of visual field defect in the contralateral eye. The visual field defect improved because of the migration into the lateral ventricle.