Secondary glaucoma following vitreo-retinal surgery

Vitreo-retinal (VR) surgeries are currently the third most common intraocular surgeries performed worldwide. The most common complication following vitreoretinal surgery is cataract, closely followed by elevated intraocular pressure. The overall incidence of secondary glaucoma post VR surgery in the literature varies widely from 20% to 60% depending on the surgical techniques and the definitions used for glaucoma. The underlying mechanism for elevated intraocular pressure determines the treatment strategy; hence, meticulous history-taking and examination are key to successful management. Mechanisms of glaucoma are varied, and often more than one mechanism can coexist in the same eye. Most eyes respond well to medical management. Laser and surgical interventions may be required in a small proportion of patients. Glaucoma drainage devices are often the ideal surgical option, and surgical techniques will need to be tailored to the requirements of individual patients.