Oculo is the Latin word for "eye". In medicine, oculology is a specialty that deals with the anatomy, physiology, diseases and treatment of the eyes. Oculism is the more common term for this type of ophthalmology, but it can be somewhat less precise. In biology, oculi are used to refer to any eye structures or organs within the body of animals and even plants.
Eyes are one of the most important parts of the human body. They allow us to see, communicate, observe our environment, and find food. The eyes are responsible for human vision. Without vision, we cannot receive the same amount of information as we receive with vision. They can also be a source of light as they have reflective fabrics that mirror the light.
Most eye development occurred among certain populations of animals that evolved from aquatic life. Mutations associated, firstly, with the development of a new protective mechanism and, secondly, with a decrease in blind variations, provided an advantage to the group that introduced its genes into the population of its environment. This makes the difference between small-eyed vertebrates, such as frogs and aquatic reptiles, and large-eyed vertebrates, such as fish, birds and mammals.