Euro Optometry and Vision Science

Iris Disorders

A visual testing of a patient's iris is to make a diagnosis. Iris abnormalities caused  from trauma, infection, neoplasm and genetic reasons. The iris structure is composed of connective tissue and blood vessels that lies anterior to lens. The central opening of the iris denotes the pupil. The color of iris is determined by pigmented cells lies in the stroma. Pigment accumulate in these cells during the first year of life, and the color of  iris often changes during times. The posterior layer of  iris is deeply pigmented. It also extends slightly onto the anterior surface of the pupil.