The iris (pl.: irides or irises) is a thin, annular structure in the eye in most mammals and birds that is responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching …

Jul 24, 2024 · What is the iris? The iris is the colored part of your eye. Muscles in your iris control your pupil — the small, black opening that lets light into your eye.

5 days ago · In human anatomy, the iris is the colored, muscular part of the eye surrounding the pupil. The iris is in front of the lens and behind the cornea and is bathed in front and behind by a fluid …

Oct 21, 2025 · The iris of the eye is the colored, muscular curtain of the eye. Located between the cornea and lens, the iris regulates how much light gets into the eye.

Oct 31, 2024 · The iris is the colored part of the human eye and a component of the uvea (uveal layer or uvea coat). The uvea is a pigmented layer found between the retina and the sclera (white of the eye).

Feb 20, 2025 · This article breaks down the function of the iris along with where it’s found, its anatomy and characteristics, and common eye conditions that affect it.

The iris is the colored part of your eye, made of muscle and connective tissue, and surrounds the pupil. A healthy iris plays a critical role in eye function and overall visual health.

5 days ago · Read an overview of general eye anatomy to learn how the parts of the eye work together. Iris. A, Histologic section of the iris showing the sphincter muscle, typically found within 1 mm of the …

The iris is located in the centre of the eye, surrounding the pupil and is the coloured part of the eye. According to the National Eye Institute, the iris regulates the amount of light that enters the eye.

The iris is a key structure in the eye responsible for controlling the size of the pupil and regulating the amount of light that enters the eye. Its unique anatomical features contribute to its ability to adjust to …