Mantis shrimps probably have the most sophisticated vision in the animal kingdom. Their compound eyes move independently and they have 12 to 16 visual pigments compared to our three. They are the only animals known to be able to see circular polarised light.
It seems that the best eyesight ever reported in a human was in an Aborigine man with 20/5 vision! To give you an idea of how clear and far he could see, his vision measurement compares to the natural sight of eagles. From 20 feet, he could perceive the fine details that most people can only see from 5 feet away!
A normal eye gets a score of 20/20. While birds can't take the same test, researchers use experiments to test their vision. Results suggest they can see with 20/5 acuity. Overall, it's not possible for humans to get to 20/5, researchers say.
Yes. Having 20/20 vision means you have normal or average, vision. Some people have vision that's better than 20/20, like 20/15 vision or 20/10 vision.
Legal blindness occurs when a person has central visual acuity (vision that allows a person to see straight ahead of them) of 20/200 or less in his or her better eye with correction. With 20/200 visual acuity, a person can see at 20 feet, what a person with 20/20 vision sees at 200 feet.
People with 20/25 vision have eyesight that is slightly below average, but it is sight that can be corrected by wearing eyeglasses or contact lenses or by undergoing LASIK surgery.
The mantis shrimp's visual system is unique in the animal kingdom. Mantis shrimps, scientifically known as stomatopods, have compound eyes, a bit like a bee or a fly, made up of 10,000 small photoreceptive units.
Chameleons have some of the strangest eyes on the planet, which are able to move independently of each other. This results in almost 360-degree vision.
20/30 to 20/60, this is considered mild vision loss, or near-normal vision. 20/70 to 20/160, this is considered moderate visual impairment, or moderate low vision. 20/200 or worse, this is considered severe visual impairment, or severe low vision.
Aboriginal and Torres Strait Islander adults experience bilateral vision impairment and blindness 3 times more than non-Indigenous adults.
Mild: -0.50 to -3. Moderate: -3.25 to -5.00. High: -5.25 to -10. Extreme: greater than-10.
If you have 20/13 vision it means you can see 20 feet clearly while an average person can see 13 feet. 20/100 – Having 20/100 vision means you can see an object from 20 feet clearly while the average person can see an object from 100 feet. Same thing with a vision of 20/60, 20/80, 20/50, etc.
Only about 35 percent of all adults have 20/20 vision without glasses, contact lenses or corrective surgery. With corrective measures, approximately 75 percent of adults have this degree of visual acuity while the other 25 percent of the population just doesn't see very well, Dr. Johnson says.
While super vision isn't unusual in animals—a few species of birds choose mates based on subtle color differences in feathers, and some insects can see color wavelengths that flowers reflect—it's estimated that the condition affects only 1 percent of human beings.
Although chitons look very simple, these mollusks have a very sophisticated shell. Its outer layer contains up to 1000 tiny eyes, each a bit smaller than the period at the end of this sentence.
The rarest animal in the world is the vaquita (Phocoena sinus). It is a kind of critically endangered porpoise that only lives in the furthest north-western corner of the Gulf of California in Mexico. There are only 18 left in the world. It is thought that they may be extinct in ten years.
Leech: The interior structure of a leech is divided into 32 different segments, each of which has its own brain.
There are 44 species of the genus Cyclops, also known as water fleas, all with a single eye that is either red or black. Cyclops are between 0.5-3 mm long, have 5 pairs of limbs on the head and another 7 pairs of limbs on the mid-body. They also have 2 pairs of antennae.
You know how we (humans) have eyeballs? Well, owls don't. They have eye tubes or cylinders, rod-shaped eyes that do not move in their sockets as eyeballs do. Instead, owls have to move their bodies or heads in order to look around.
20/10 vision is thought to be the maximum visual acuity of human eyes without binoculars or other magnifying devices. Recent advances in optics have led to the creation of corrective lenses that can provide this ultra-sharp vision.
-3.00 diopters or less is mild. -3.00 to -6.00 diopters is moderate. -6.00 to -9.00 diopters is severe.
Vision impairment, or a vision acuity of 20/100 or worse, can affect your functional vision and cause difficulties with seeing things at a distance. It will often require that you use alternative methods to perform daily tasks.