Choroid Choroid The choroid, also known as the choroidea or choroid coat, is the vascular layer of the eye, containing connective tissues, and lying between the retina and the sclera. The human choroid is thickest at the far extreme rear of the eye (at 0.2 mm), while in the outlying areas it narrows to 0.1 mm. The choroid provides oxygen and nourishment to the outer layers of the retina. Along with the ciliary body and iris, the choroid forms the uveal tract. The structure of the choroid is generally divided into four layers (classified in order of furthest away from the
The University of Illinois Eye and Ear Infirmary including cornea, retina, and pediatric ophthalmology throughout their training and are involved with on call duties. The Department of Otolaryngology at the Illinois Eye and Infirmary is also the oldest department of its kind in the U.S. The Illinois Eye and Ear Infirmary was founded in May 1858 by a 30-year-old physician named Edward Lorenzo Holmes as the Chicago Charitable Eye and Ear Infirmary, the department predates the UIC College of Medicine. The Infirmary took up just a single room in a frame building at 60 North Clark Street in Chicago, and the first patient arrived before the room was