Yesterday, we looked at the eye and writing the purpose of that part of the eye.
Part of eye | Purpose |
Retina | The retina is located at the back of the eye, and when light hits the retina, it activates two types of cells, rods and cones. Rods identify light and dark and support images under dark and dim conditions. Cones are responsible for colour vision - red, green and blue, which detects a range of wavelengths, not the three specific colours. |
Pupil | The size of the pupil determined by the iris, as the pupil gets bigger, as more light enters the eye. |
Cornea | Light goes through the cornea, the transparent outer covering of the eye. Because the eyeball is round, the cornea acts as a lens, it bends or refracts light. |
Optic Nerve | Where it sends light to the brain. |
Iris | Light travels through the cornea and aqueous humour (helps to shape the cornea and provides nourishment to the eye. |
Lens | Allows the eye to focus on either near and distant objects. |
Vitreous humour | Is a clear watery gel that helps the eye and allows for this distance. |
