In many places, Sub-Tenon's block has replaced other orbital regional anesthetic techniques as the most popular one. With fewer sight-threatening consequences than sharp needle procedures, it effectively anesthetizes the orbit. The majority of ophthalmic surgical procedures, such as cataract surgery, vitreoretinal surgery, trabeculectomy, adult strabismus surgery, panretinal photocoagulation, optic nerve sheath fenestration, long-term postoperative pain management, therapeutic drug delivery, and many others, are suitable for Sub-Tenon's Block.
