1 5 Social Studies Writing Prompts Social studies can be a very fun subject if given the opportunity. 2  There are plenty of homework options that both bring the subject to life and allow for student creativity.
The cornea helps the eye focus as light makes its way through. It is a very important part of the eye, but you can hardly see it because it's made of clear tissue. Like clear glass, the cornea gives your eye a clear window to view the world through.
How to Test Vision Accommodation. Vision accommodation refers to the focusing ability of the eye. When an object is distant, light rays that enter our eye and allow us to see it are almost parallel. However, a closer object causes light rays to diverge, causing the eye muscles to tighten to keep the object in focus.