Cataract Surgery in Only Seeing Eye

You are anaesthetising for an ophthalmology list at a standalone day-surgery unit with two operating theatres. Your first patient is a 55-year-old man with a rapidly-progressive posterior subcapsular cataract in the right eye for a cataract extraction and intraocular lens insertion. Medical history Type 2 diabetes mellitus - oral hypoglycaemics - HbA1c 6.8% (51 mmol/mol) - no known end-organ disease other than cataracts Highly myopic, blind in left eye after previous macular retinal detachment at age 51 years Medications Metformin 1 g twice daily Allergies: Nil Examination is unremarkable, with body mass index of 24 kg/m2. Preoperative investigations have been reviewed and are normal. The patient is fasted and has been considered appropriate for day surgery.