a. Ophthalmologist

b. Orthodontist

c. Ornithologist

2. Explain how monocular works

In a healthy eye the light comes from the cornea at the front and is focused by the lens on the back of your eyes. There’s a layer of super special nerve cells that detects light and colors which is called retina, then the brain works what you see from there, but what some people see isn’t clear. There’s a thing called being long-sighted or short-sighted, if your long-sighted it’s hard to see whats in front of you and/or whats close to you, if you are short-sighted it’s the opposite you can’t see whats far from you.

From Mary