A 60 y.o. man complains of significant pain in the right eye, photophobia, lacrimation, reduced vision of this eye, headache of the right part of the head. Pain occured 2 days ago. On examination: Vis OD- 0,03, congested injection of the eye ball, significant cornea edema, front chamber is deep, pupil is narrow, athrophic iris, there is optic nerve excavation on the eye fundus, intraocular pressure- 38 mm Hg. Vis OS-0,8 unadjustable. The eye is calm, healthy. Intraoccular pressure- 22 mm Hg. What is the most probable diagnosis?