Sudden Visual Decline After Cataract Surgery: A Case of Irvine–Gass Syndrome

Irvine–Gass syndrome (IGS), also known as pseudophakic cystoid macular oedema, is a common cause of decreased visual acuity following uncomplicated cataract surgery. We report the case of a 71-year-old male who developed cystoid macular oedema one month after cataract extraction with intraocular lens implantation. Diagnosis was based on reduced visual acuity and characteristic findings on OCT and fundus evaluation. The patient was managed conservatively with topical NSAIDs. This case highlights the importance of recognizing Irvine–Gass syndrome early to prevent persistent visual impairment.