A 28-year-old female presents to the eye clinic 3 days after accidental splash of sodium hydroxide (NaOH) solution to her left eye while cleaning. On examination, the cornea is opaque with a white, frosted appearance, the conjunctiva is blanched and ischemic, and the eyelids show chemical burns. Intraocular pressure is 18 mmHg. Visual acuity is light perception. The patient reports that she irrigated the eye immediately with tap water for 10 minutes at home. What is the most important next step in management?