I was at the Optometrist yesterday and I wondered about the eye. He told me that the human eye has the fastest metabolic rate in the human body because of the rate it is regenerating images. I hadn't realized that seeing takes up 50% of the brain's functionality.
What about these facts?
If the human eye were a digital camera it would have 576 megapixels.
We spend about 10% of our wake time with our eyes closed.
An ostrich’s eye is bigger than its brain.
Dolphins can sleep with one eye open.
Birds, cats and dogs have three eyelids.
Humans can see more shades of green than any other colour.
The world’s most common eye colour is brown.
The eye has over 2 million moving parts.
There are colours that are too complex for the human eye to comprehend. These are known as “impossible colours”, which cannot be perceived due to being outside the strength of our three types of cone cell in the retina. However, some of these colours can be seen by mixing colour signals from the two eyes, or by looking at special “fatigue templates”.
When I looked at this picture of waterlilies at Longwood Gardens I was amazed at the how many flowers are in each cluster.
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