Question

Our body fixes any wound or injuries itself then why lenses in our eyes can't be fixed by our body? so we won't have to wear spectacles anymore

Answer 1

The eyes are small compared with most organs, but their structure is incredibly complex. They work together to perceive depth, enabling us to judge distance and the size of objects to help us move around them. They also work with the brain, muscles, and nerves to produce complicated visual images and messages. And they constantly adapt to the changing environment — for example, adjusting so that we can easily move around in a nearly dark room or bright sunlight.

To understand how the eyes work, it's important to know about their structure and about conditions and diseases that can interfere with vision.