A 76-year-old woman presented to the department of ophthalmology with painful unilateral exophthalmos, 5 days after undergoing couching of the right cataractous lens by a traditional healer. The following day her eye had become red and painful with reduced vision.
On examination visual acuity in the right eye was light perception, the intraocular pressure was high (45 mm Hg; normal 10–20 mm Hg), and there was proptosis and ophthalmoplegia.
What’s the most likely diagnosis ?
