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biochicka biochicka
wrote...
Posts: 307
9 years ago
The eye has some interesting features  concerning the blind spot and its function (or its lack of function). Try to place your face about 30 cm from the screen with your nose centred on the cross-hair. Close your right eye. Start reading the letters in succession focusing on each letter in turn.

At which letter does the cross-hair disappear? Explain where and why it disappears.
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wrote...
Educator
9 years ago
That's your human blind spot. The eye's retina receives and reacts to incoming light and sends signals to the brain, allowing you to see. There is, however, a part of the retina that doesn't give you visual information. This is your eye's blind spot.

The optic nerve carries messages from your eye to your brain. This bundle of nerve fibers passes through one spot on the light sensitive lining, or retina, of your eye. In this spot, your eye's retina has no light receptors.
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biochicka Author
wrote...
9 years ago
That was so helpful, thank you so much!!:)
wrote...
3 years ago
thank you
wrote...
2 years ago
Thank u
wrote...
3 weeks ago
TY :)
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