Trocar anterior chamber maintainer facilitates ocular surgeries

Self-sealing wounds are the most desirable hallmark of any intraocular surgery. Controlled access to intraocular segment structures without running the risk of hypotony is the prime concern of all surgeons. Anterior chamber maintainers and trocar cannulas are the most common methods employed for infusion by anterior segment and posterior segment surgeons, respectively.The introduction of the trocar cannula was a monumental advance in ophthalmology because it allowed, for the first time, controlled access to the posterior segment of the eye, and currently it is an integral part of modern pars plana vitrectomy for maintaining infusion in the eye. A 23-gauge (0.6 mm), 25-gauge (0.5 mm) or 27-gauge (0.4 mm) entry does not require an incision of the conjunctiva and Tenon’s layer to expose the sclera. Instead, trocars are placed through the conjunctiva and sclera to afford access to the vitreous and to maintain infusion in the eye.