A 44 year old woman presents complaining of the acute onset of left eye pain while walking into a movie theater one hour ago. On physical examination, she has stable vital signs. Her visual acuity is 20/25 on the right eye and 20/200 on the left eye. Her pupillary exam is notable for a minimally reactive dilated left pupil and a steamy cornea. The left eye is red and obviously painful. Which of the following conditions is most likely?
1) acute angle closure glaucoma
2) vitreous hemorrhage
3) central retinal artery occlusion
4) hypopyon
5) optic neuritis