Human eye. Macroscopic footage of part of the iris of a human eye. The iris is a pigmented circular structure which gives the eye its colour. It is mostly composed of smooth muscle, and contracts and relaxes under involuntary control. It regulates the size of the pupil, and therefore the amount of light entering the eye and falling on the retina. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clouds Hill Imaging |
Modell-Rechte: | nicht erforderlich |
Länge: | 14 Sekunden |
Seitenverhältnis: | 4:3 |
Restrictions: | - |