Nearly 70 Percent of all the sensory receptors in your body are in the eyes.
The frequency of a light wave determines its hue. High frequency looks blue while low frequency looks red
The amplitude of a light wave determines its brightness.
Light reflected off an object passes through the eye’s cornea, is then focused through the lens onto the Retina. This information is carried to the brain via the optic nerve which is used to create an image.
Cones detect fine details and colour.
Rods detect general shape and light levels. Used for our peripheral vision