Iris myocytes In humans, in particular, these cells are called miocytes.
A myocyte is a type of cell that belongs to the group of muscle cells. Myocytes can be found in various tissues of the body, such as skeletal muscle, smooth muscle and cardiac muscle. In the iris of the eye, which surrounds the pupil, they are also known as iris myocytes. These cells are responsible for controlling the diameter of the pupil and regulating the amount of light entering the eye.