Paraneoplastic optic neuropathy with simultaneous retinal and choroidal metastasis in metastatic lung carcinoma: A rare entity.

Paraneoplastic optic neuropathy (PON) is a rare phenomenon that is associated with lung carcinoma. In addition, retinal metastasis is extremely rare, accounting for <1% of intraocular metastasis. We hereby report a rare case of synchronous metastases from lung carcinoma to the choroid of the right eye and the retina of the left eye complicated with presumed PON. The presence of intraocular mass and optic disc swelling should prompt investigations for systemic malignancies. [ABSTRACT FROM AUTHOR]