Stent out. Others attribute the noun "stent" to Jan F. Esser, a Dutch plastic surgeon who in 1916 used the word to describe a dental impression compound invented in 1856 by the English dentist Charles Stent (1807–1885), whom Esser employed to craft a form for facial reconstruction. The full account is described in the "Journal of the History of Dentistry". According to the author, from the use of Stent's compound as a support for facial tissues evolved the use of a stent to hold open various bodily structures. The first (self-expanding) "stents" used in medical practice in 1986 by Ulrich Sigwart
Anaesthesia for ocular surgery paralyzed. The complications of retrobulbar block are globe perforation, optic nerve injury, retrobulbar haemorrhage and extraocular muscle palsy. Retrobulbar anaesthesia is contraindicated in posterior staphyloma, high axial myopia and enopthalmos. This technique was first applied by Davis. In peribulbar block, 6 ml of local anaesthetic is injected to the peripheral spaces of the orbit. The anaesthetic diffuses into the muscle cone and eyelids, causing global and orbicularis akinesia and anaesthesia. After injection, orbital compression is applied for around 15 minutes. Nearly all ocular surgeries "viz" keratoplasty, cataract extraction, glaucoma surgery, iridectomy, strabismus, retinal detachment surgery etc. can be done under