science
Grade6
Easy
Question
The light reflecting off an object enters the eyes and is focused on to a point on the retina. However, the object was not viewed by the person. What could be the reason behind this?
- The lens did not focus the light correctly
- The retina is not where the light needs to be focused
- The light is focused on the blind spot
- None of the above
Hint:
There is a part of the retina which has no rod cells.
The correct answer is: The light is focused on the blind spot
The retina is covered with light-sensitive cells that send information about what you see to your brain. Everyone has a point on the retina where the optic nerve attaches. This part of the retina cannot be seen because there are no light-sensitive cells in this area. This is called a blind spot.
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