The human eye is a complex organ responsible for capturing light and converting it into images the brain can interpret. Each eye contains over two million working parts, including the cornea, iris, lens, and retina.
The cornea and lens focus light onto the retina, where photoreceptor cells—rods and cones—detect brightness and colour. The optic nerve then transmits these signals to the brain. Eyes blink about 15–20 times per minute to keep them moist and free from debris.
Interestingly, the human eye can distinguish around 10 million different colours, and every person’s iris pattern is unique, much like a fingerprint.
