Which part of the eye is responsible for focusing images?

The lens of the eye plays a crucial role in focusing images onto the retina. It is a transparent, flexible structure located behind the iris and the pupil. When light enters the eye through the cornea and pupil, it then passes through the lens, which adjusts its shape to focus light rays precisely on the retina. This focusing process is essential for clear vision, allowing us to see objects at different distances clearly. The lens accomplishes this through a mechanism known as accommodation, where it becomes thicker or thinner depending on whether we are looking at something nearby or far away. This ability to change shape is what allows the lens to effectively focus images, highlighting its fundamental function in visual perception.