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Question
What are the advantages of having two eyes instead of just one?
Solution
The following are the advantages of having two eyes.
1. Having two eyes instead of one gives us a wider field of view. With one eye, our field of view is only about 150o, but with two eyes, our field of view increases to 180o.
2. Having two eyes instead of one gives us an accurate judgement of the distance of an object. As our eyes are a few centimetres apart from each other, each eye focusses on the same object at different angles and sends two slightly different images to the brain. The job of the brain is to combine these two images and form an accurate three-dimensional image of the object.
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