OBJECTIVE To report a case of transient visual loss following uncomplicated cataract surgery with unpreserved intracameral lidocaine. METHODS A 61-year-old woman with nuclear sclerosis cataract underwent uncomplicated phacoemulsification and in-the-bag intraocular lens (IOL) implantation. RESULTS After opening the eye patch on the first postoperative day, the patient complained of complete blindness. Her vision was no light perception (NLP) and the Marcus-Gunn was found to be 4+. Eight hours later, the patient's visual acuity improved to count fingers at 1 m. After two days, the vision improved surprisingly to 20/20 without any Marcus-Gunn. After 4 weeks, the vision decreased surprisingly to 20/80 without any Marcus-Gunn. On this day, macular optical coherence tomography (OCT) was performed, and cystoid macular edema was detected. CONCLUSIONS Transient visual loss after intracameral lidocaine has been reported after violation of posterior capsule during cataract surgery, and here, we report a case of transient visual loss despite uncomplicated cataract surgery.