The Human Eye and the Colourful World

(a) Explain the functions of the following parts of the eye: (a) cornea (b) iris (c) pupil (d) ciliary muscles (e) eye-lens (f) retina (g) optic nerve (b) If you walk from a dark room into sunlight and back again into dark room, how would your pupils alter in size? What makes this happen? (c) Explain why we cannot see our seats first when we enter a darkened cinema hall from bright light but gradually they become visible.

(a)The cornea is the portion of the eye’s front that allows light to enter.(b) Iris: The iris regulates how much light enters the eye.(c) Pupil: The pupil controls how much light enters the eye.(d) Ciliary muscles: These help the eye lens to contract and relax.(e) The eye lens aids in concentrating light on the retina.(f) …

(a) Explain the functions of the following parts of the eye: (a) cornea (b) iris (c) pupil (d) ciliary muscles (e) eye-lens (f) retina (g) optic nerve (b) If you walk from a dark room into sunlight and back again into dark room, how would your pupils alter in size? What makes this happen? (c) Explain why we cannot see our seats first when we enter a darkened cinema hall from bright light but gradually they become visible. Read More »