Vision - JSS2 Basic science Lesson Note

Vision is the ability of an organism to interpret the surrounding environment through the sense of sight. It involves the complex process of light entering the eye, being focused by the lens onto the retina, where it triggers nerve impulses that are then sent to the brain for processing.

The brain interprets these signals to form images, allowing individuals to perceive shapes, colors, depth, and movement. Key components of vision include the cornea, iris, lens, retina, and optic nerve. Vision is crucial for various activities, such as navigation, communication, and survival, and it varies in acuity and color perception among different species.