A 68-year-old man with dense nuclear sclerotic cataract in the right eye presents for cataract surgery. Preoperative biometry shows axial length 23.5 mm, keratometry 44 D, and anterior chamber depth 2.8 mm. During phacoemulsification, the nucleus is noted to be very hard and the phaco time exceeds 3 minutes. Intraoperatively, there is a posterior capsular rupture with vitreous loss. What is the most appropriate next step in management?