The Eye & Vision

This is an edited clip that describes the physiology of the eye and some of the cool properties of our visual system.

Category:

Science & Technology

Tags:

• eye
• vision
• science

[code3kc]

You don't lose half of your visual field, but if you wanna lose a whole eye be my guest lol. Each eye has an optic nerve that comes out of the posterior side of the eye. From there, that nerve splits in half. For example, a right eye would have part of the nerve branch to the left, while the other part continues right, joining with part of the nerve coming from the left eye. And that's not unlikely at all; The optic chiasm is more anterior than not. Like if you fall and hit the back of your head

[PBDPBD]

@code3kc That doesn't make sense. I'd prefer to lose one eye instead of losing half of my visual field. Having a single eye see the entire visual field is far better than having two eyes see half of the visual field. Besides, for what you say to be true, the damage would have to occur posterior to the optic chiasm on the optic tracts. That's incredibly unlikely to happen, any damage is going to occur anterior to it on the optic nerves.

[code3kc]

@danigibo The optic nerves cross each other at the optic chiasm. It's so that in the event of a trauma or damage to the nerve, you'll only lose a little of your visual field instead of an entire eye.

[danigibo]

why do they say the right eye signals the left side of the brain and vice versa. it is the right visual field that transmit to the left brain, that is, the right side of both eyes. the left side of both eyes (left visual field) transmit to the right hemisphere of the brain