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
Minimally invasive glaucoma surgery controlled FDA study, although the effectiveness was significantly reduced by 2 years. Safety of the iStent was comparable to cataract surgery alone which is much better than conventional trabeculectomy. Common complications include failure to implant the device, touching the iris with the device, and touching the undersurface of the cornea (endothelium) with the device. Multiple studies have since confirmed the MIGS-type efficacy and safety profile of the iStent. To address the reduced effectiveness at 2 years, some studies have been performed with multiple iStents. The CyPass Micro-Stent is the first MIGS device developed for lowering of IOP through the suprachoroidal