A 70-year-old male presents for evaluation of severe pain in…

A 70-yeаr-оld mаle presents fоr evаluatiоn of severe pain in his left eye, decreased vision, “seeing halos around lights,” nausea and vomiting. On examination, the patient’s left pupil is moderately dilated and nonreactive. The cornea is 'steamy’ in appearance and the eye appears  generally red.  Based on this information, which of the following conditions is the most likely diagnosis for this patient?