1st April 2022

A 71-year-old man is admitted under ophthalmology following the diagnosis of acute angle-closure glaucoma

A 71-year-old man is admitted under ophthalmology following the diagnosis of acute angle-closure glaucoma. He is treated surgically, and followed up in ophthalmology clinic three months later. However, the intraocular pressure of the affected eye remains high.

Which of the following surgical options could be used to treat this patient? 

Select the SINGLE most appropriate option from the list below. Select ONE option only.