Human Eye Anatomy and How We Can Donate Our Eyes

Human Eye Anatomy

The eye is a sensitive and priceless sensory organ in the human body. It allows us to see the colors all around us and this wonderful world. We can recognize objects to some extent with our eyes closed based on their smell, taste, sound, or touch. But pupil, it's impossible to distinguish colors when your eyes are closed. The ability to see the vibrant world around us makes the human eye the most crucial of all the senses.
Similar to a camera is the human eye. On the retina, also known as the light-sensitive screen, its lens-body creates an image. Through a slender membrane, light enters the eye. This transparent bulge on the front surface of the eyeball is a membrane known as the cornea, or clear circle. The eyeball is almost spherical in shape and has a diameter of 2.3 cm. The outer surface of the cornea is where the majority of light rays that enter the eye are refracted. The crystalline lens only modifies the focal length slightly to focus objects that are positioned at various distances on the retina. The iris is a structure located behind the cornea. The iris is a thick, muscular diaphragm that regulates pupil size. The pupil regulates how much light reaches the eye. On the retina, the eye lens creates an accurate and inverted image of the object. There are many light-sensitive cells in the retina, a delicate microscopic membrane. The light-sensitive cells become active and send out electrical signals when they are illuminated. The visual nerves transmit these signals to the brain. We see an object as it is when the brain interprets these signals and eventually processes the data.

Do you know that our eyes continue to exist even after we pass away?