Jan F. Esser Jan F. Esser Johannes "Jan" Fredericus Samuel Esser (13 October 1877 in Leiden – 9 August 1946 in Chicago) was a Dutch plastic surgeon who pioneered innovative methods of reconstructive surgery on soldiers wounded in the First World War. He is thought to have coined the term "stent" in 1917 to describe his use of a dental impression compound invented in 1856 by the English dentist Charles Stent (1807–1885) to create a form for facial reconstruction. The term "stent" was later extended to mean a device to expand constricted tubes of body tissue. He was a one time Dutch Chess
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