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Title: At which letter does the cross-hair disappear? Post by: biochicka on Feb 25, 2015 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. Title: Re: At which letter does the cross-hair disappear? Post by: bio_man on Feb 25, 2015 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. Title: Re: At which letter does the cross-hair disappear? Post by: biochicka on Feb 25, 2015 That was so helpful, thank you so much!!:)
Title: Re: At which letter does the cross-hair disappear? Post by: mh.christina on Mar 3, 2021 thank you
Title: Re: At which letter does the cross-hair disappear? Post by: Sam112003 on Nov 29, 2021 Thank u
Title: BFSF: At which letter does the cross-hair disappear? Post by: Jade Ruby on Feb 7, 2024 TY :)
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