GATA-3 biomarker as a confounding factor in a patient with intraocular metastasis from squamous cell carcinoma of the lung.

Metastatic tumours to the retina are rare and are mainly found in the uvea (choroid, iris, or ciliary body). Despite their rarity, they pose a diagnostic challenge due to their diverse origins and subtle manifestations. This study examines the clinical characteristics and diagnostic challenges of retinal metastases through a literature review and a case involving a 74-year-old male with a painful blind left eye.