WebDec 5, 2024 · The ciliary body is an inner eye structure, located at the border between the choroid and the iris. It is composed of several unique structures that give the ciliary body … WebApr 12, 2024 · Sphincter pupillae is a circular muscle, about 1 millimeter wide. It is located in the pupillary zone of stromal layer of the iris, attaching to and encircling the pupillary margin of iris. The muscle itself consists of six to eight circles of smooth muscle fibers, between of which are found the nerves and blood vessels that supply each fiber.
What Is the Iris of the Eye? - Verywell Health
WebJul 19, 2024 · The iris sphincter muscle, also known as the pupillary sphincter or sphincter pupillae, is a muscle located in the colored part of the eye called the iris. The sphincter muscle fibers are located near the … The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, beneath the stroma, pigmented epithelial cells. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles (dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds. dvd the good nurse
Ciliary Body - All About Vision
WebApr 23, 2024 · The iris is the colored part of the eye that controls the amount of light that enters into the eye. It is the most visible part of the eye. The iris lies in front of the … WebFeb 24, 2024 · The lens of the eye, also called the crystalline lens, is an important part of the eye’s anatomy that allows the eye to focus on objects at varying distances. It is located behind the iris and in front of the vitreous body. In its natural state, the lens looks like an elongated sphere — a shape known as ellipsoid — that resembles a deflated ball. WebThe parts of the eye include: Iris, the colored area of your eye. Depending on your eye color, the iris might be any shade of blue, green, hazel or brown. Cornea, a clear layer that extends over the iris. Water and collagen make up the cornea. Your tears protect your cornea and keep it lubricated. dutch association of geothermal operators