MSFinals-3965

An older woman presents to the Emergency Department with severe headache, nausea, vomiting and a painful, red right eye. She has reduced visual acuity in the right eye and normal visual acuity in the left eye. On examination, she had a stony hard eye with marked pericorneal reddening and a hazy corneal reflex. Tonometry revealed raised intraocular pressure.
Which of the following is the most appropriate management plan?