Iris - Action Blog

At its core, the iris is a circular muscular structure. It controls the diameter of the pupil, much like the aperture of a high-end camera lens. This movement is governed by two main muscles: the sphincter pupillae, which shrinks the opening in bright light, and the dilator pupillae, which expands it in the dark. This "action" happens in milliseconds, protecting the retina from overexposure while ensuring you can see in the dimmest conditions. Iris Action in Photography

If you mean the IRIS system (often used for automated decisions, workflows, or compliance): iris action blog

It looks like you’re asking about a related to an “iris action blog.” At its core, the iris is a circular muscular structure