Concepts you cannot miss #Humaneyes #RainbowFormation #VisionDefects #ScatteringOfLight #Lens #AtmosphericRefraction #Dispersion #1 Structure of human eye The working of human eye is based on refraction by a lens. Some components of human eye are: Sclerotic: Outermost covering of the human eye from inside. It protects the eye from internal damage and is opaque. Cornea: Outermost covering of the human eye from outside. It protects the eye from external damage and is colourless. Retina : Acts as a screen on which image is formed. It is made up of two types of cells- rods (cylindrical) and cones (conical cells). Rods are sensitive to dim light. Cones are sensitive to bright light and responsible for colour identification. Iris : Dark-coloured muscular diaphragm with a small circular opening in the middle. It regulates the amount of light entering the eye by adjusting the size of the pupil. It provides colour to the eye. Pupil : Central circular aperture of iri...
Comments
Post a Comment