Welcome
back my fellow learners, today we are going to learn about how a cats
eye works.
No one
ever makes the statement about what the world would look like should
you be a cat. Instead, we talk about a bird’s-eye view, and make
use of fish-eye lenses to distort the way things look. However, we
rarely think about how the Internet’s favourite animal sees the
world the live in.
To begin
with, a cats’ visual field is much wider than ours, spanning
approximately 200 degrees instead of 180, and their visual acuity
isn’t great. So, things people will see sharply, resolve at
distances of 100-200 feet appear blurred to cats, which will see
these objects at distances of 20 feet. That might not sound great,
however, there’s always a trade-off.
Due to
the various photoreceptors within a cats’ retina, they leave us
standing when it comes to seeing clearly in dim light. Instead of the
colour-resolving, and detail cone cells which are found in the center
of a persons retinas, cats come with several more rod cells, these
excel in dim light, and are responsible for a felines excellent night
vision. The rod cells refresh quicker, this permits cats to see rapid
movements, such as the rapidly shifting path a laser dot may trace.
Finally,
cats see colours far differently than us, which is why cat versions
of what we see are less vibrant than ours. Scientists originally
though cats were dichromats, only able to see in two colour
spectrum's, however, this is proved not to be the case. While a cats
photoreceptors are sensitive to wavelengths found within the blue
violet and green yellow ranges, it seems that they could also see
some green also. In layman's terms, cats are nearly red and green
colour blind, as are most of us.
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