The eye is an organ that is responsible for vision. It is a complex structure that is composed of several parts, including the cornea, iris, lens, retina, and optic nerve. These different parts work together to focus light onto the retina, which then sends signals to the brain to create a visual image.

The cornea is the clear, dome-shaped outer surface of the eye that helps to focus light. The iris is the colored part of the eye that regulates the amount of light that enters the eye by controlling the size of the pupil. The lens is a transparent, flexible structure that sits behind the iris and helps to focus light onto the retina. The retina is a layer of light-sensitive cells at the back of the eye that sends visual information to the brain via the optic nerve.

The eye is a vital organ that is susceptible to a variety of conditions and diseases, such as myopia (nearsightedness), hyperopia (farsightedness), cataracts, and glaucoma. Regular eye exams are important for maintaining good eye health and catching any potential problems early.