Just like fingerprints, each person has a unique pattern in their iris, making it a reliable form of identification.
During REM sleep, your eyes move quickly behind closed eyelids, similar to the way they move when you're awake and actively looking around.
On average, a person blinks about 15 to 20 times per minute, amounting to around 1,200 blinks per hour. This helps keep the eyes moisturized and protected.
Tears serve not only to express emotions but also to keep your eyes lubricated, protect against infections, and even nourish the front surface of the eye.
While humans are not as adept at seeing in the dark as some animals, we excel in distinguishing colors due to the presence of three different types of cones in our eyes.
The lenses in your eyes invert the images they receive, but your brain automatically flips them back to the correct orientation, allowing you to perceive the world upright.
Unlike most body parts that stop growing during adulthood, your eyes continue to grow throughout your life, albeit at a very slow rate.
When you're having a conversation with someone, your natural tendency is to sync your blinks with theirs, fostering rapport and a sense of connection.
The cornea, which is the transparent outer layer of the eye, lacks pain receptors. This is why eye surgeries like LASIK can be performed with minimal discomfort.