If you take a visual field test, you always have a small area where you completely fail the test because of the optic disk blind spot.
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I can't remember if we discussed this in class, but a really cool phenomenon is that stars at night actually appear brighter in you peripheral vision. When you focus in on them, they seem to disappear! You can try it if you leave downtown Pittsburgh over the holidays.
If you take a visual field test, you always have a small area where you completely fail the test because of the optic disk blind spot.
I can't remember if we discussed this in class, but a really cool phenomenon is that stars at night actually appear brighter in you peripheral vision. When you focus in on them, they seem to disappear! You can try it if you leave downtown Pittsburgh over the holidays.