Octopus Facts ~ Octopus FAQ
Octopus eye facts
- They have 2 eyes with excellent vision .
- They have rotating eyes.
- They have an ability to align their eyes horizontal even though the body may be aligned at any angle.
- They have no blind spot.
- Their pupils are horizontal, while ours are round.
- They are nearsighted and can’t see much past 8 feet.
- They have polarized vision which allows them to see nearly invisible critters like jellyfish.
Octopus eye versus human eye
Octopus and human eyes are similar even though they developed on
different paths. Each has a cornea, an iris, an accommodating lens, a
fluid-filled vitreous humor, a retina, and so forth.
Octopus eyes focus like a camera with the lens moving in or out while
our eyes use muscles to squeeze the lens to focus. The octopus eye,
like other invertebrate eyes, develops as an invagination, or
in-pocketing, of the skin. Human eyes develop as extensions of the
brain. Here is a more detailed explanation of the difference.