The aperature can control the amount of light that comes into the camera just like the pupil of the eye.
The pupil of the eye can be likened to a camera aperture. Just as an aperture controls the amount of light entering a camera, the pupil regulates the amount of light entering the eye.
The iris is like the aperture part of a camera, which used to also be called the iris.
The focusing lens of the camera
The pupil is the center round black part of the eye. This is where the light enters into the retina. The human pupil works much like the aperture of a camera.
The camera aperture is like the pupil of the eye, adjusting in size to control the amount of light that enters the camera. A smaller aperture lets in less light, while a larger aperture lets in more light. This helps to regulate the exposure of the image being captured.
The part of the eye that functions like an aperture is the iris. The iris controls the size of the pupil, which adjusts the amount of light that enters the eye, similar to how an aperture regulates light in a camera. When light levels change, the iris expands or contracts to optimize vision in varying lighting conditions.
The part of the eye that is similar to the shutter in a camera is the iris. It regulates the amount of light entering the eye by adjusting the size of the pupil, functioning like a camera's aperture to control the amount of light reaching the retina.
Because its diameter can be changed to alter the light level on the sensor behind it. In a camera this is done by altering the f/number. In the eye it occurs via an automatic physiological response.
The iris acts like the aperture of a camera lens.
Just like the aperture on a camera, your pupil dictates how much light is let into your eye. So when you shine a light in your eye your pupil gets tiny, and in the dark your pupil gets large to let as much light in as possible so you can see better.
It is identical in action to the iris in your eye, it widens and narrows to allow only the required amount of light through the aperture hole/pupil
Both cameras and eyes have lenses that can focus and will project an image ( upside down ) of what they are looking at, and the Pupil from an human eye can expand or contract to adjust the amount of light that enters, this is the same as the shutter of a camera.