As additional sources for vital records, original documents, vintage photographs and surname-based DNA projects are discovered, this page is updated to offer the best list for researching Koepka ancestry.
View image. The optic nerve connects your eyes to your brain. It carries the visual messages that you see to your brain. An injury to your optic nerve is called traumatic optic neuropathy. If your injury is severe, you may have permanent changes in your vision.
A good review can be found in Reference 2. The Auditory and Visual Senses. Light enters the front of the eye through the pupil and is focused by the lens onto the retina. Rod cells on the retina respond to the light and send a message through the optic nerve fiber to the brain. (Click here to view the larger image) Image from The Human Body Auditory system 1.Ossicle. 2.