A 68-year-old man from Delhi presents with progressive vision loss in both eyes over 2 years. He has type 2 diabetes (HbA1c 8.2%) and hypertension. On examination, best-corrected visual acuity is 6/60 in the right eye and 6/36 in the left eye. Slit-lamp examination reveals dense nuclear sclerotic cataracts bilaterally. Fundus examination is clear. A-scan biometry shows axial length 23.5 mm (right eye). He undergoes phacoemulsification and IOL implantation in the right eye. Postoperatively, on day 5, he develops sudden onset pain, photophobia, and corneal edema with fibrin in the anterior chamber. Intraocular pressure is 32 mmHg. What is the most likely diagnosis?