How Good Is Your Eyesight?

By: Kennita Leon
Image: Original

About This Quiz

Eyesight is a funny thing. While most of us were lucky enough to be born with the ability to see, some were not. As we age, our eyesight, along with some other senses, also decline and it's just not as easy to get things done as it used to be. No matter what stage of your life you're at, it's essential to find out whether you've still got it (sight-wise) or whether you'll be in need of some assistance now or in the near future. 

So today, we want to test how great your eyesight is. We've hidden some animals, foods and even people in some backgrounds and it's your job to tell us whether they're there on not and who and what they are. Now while some of them may be easy to spot, others are ridiculously difficult. That's why not many people can get through this eye test. 

Do you think you'll make the cut? Or will you need to start eating a pack of carrots every day for the rest of your life? Go ahead and get started on this quiz to see if you can spot the items that we've sneakily hidden inside them! 

Despite having blue, green and red color receptors, the retina is unable to detect the latter and the brain combines the former two to create red.

On average, the human eye has 130 million rods and seven cones cells that are responsible for eyesight.

Rods and cone cells have different shapes and are responsible for seeing shapes and colors respectively.

Due to having only three types of cone cells, the eyes are unable to comprehend complex colors also known as "impossible colors."

Two to three percent of women have tetrachromacy; a medical condition in which some women are able to see more colors due to a fourth cone.

The retinas perceive images separately, upside down and distorted, which the brain then receives and alters to create a single, clear picture.

Shortsighted persons have a longer than average eyeball while longsighted persons a shorter one.

The eyeballs are the same size from birth to death, weigh about 0.25 ounce and are about 1 inch wide.

The eye is the second most complex organ with more than one million nerve fibers that connects each eye to the brain.

The properties of tears vary on the person's emotions or whether the eyes are irritated.

To prevent objects from fading from your vision, the eyes are constantly making jerking movements that are known as microsaccades.

It only takes 48 hours for the eye to repair a cornea scratch due to the organ's ability to heal quickly.

Heterochromia is a condition in which a person is born with two different colored irises.

The muscles that control the eyes are the most active in the body compared to others.

The eyeball is protected by the eye socket, the eyebrows and eyelashes that keep sweat and dirt away from it.

Doctors are unable to perform eye transplants due to the complexity of the optic nerve that connects the eyes to the brain.

Blind persons who were born with sight are still able to see images in their dreams.

All humans originally had brown eyes; people with blue eyes all have a common ancestor who carried the gene mutation.

Each eye has six muscles that work together so that the eyes are able to follow moving objects.

The eyes are the fastest reacting muscle in the human body that contracts in less than 1/100th of a second.

Part of the retina is insensitive to light, which results in a blind spot. The brain corrects this by using information from the other eye to fill in the blank.

Humans blink about 15-20 times per minute with each blink lasting about 1/10th of a second.

The peripheral vision is extremely low-resolution and is mainly black and white due to most of the color-receptors being located at the center of the retina.

The cornea, which is the clear front surface of the eye, function as a camera lens by focusing light that enters through the pupil.

It is also the only part of the body that does not contain blood. Otherwise, it would interfere with focusing the light.

The colored part of the eye, called the iris, controls the amount of light reaching the retina by automatically adjusting the size of the retina.

The eye's lens, which is located behind the pupils, further focuses light and helps the eye automatically focus on near or approaching objects.

The focused light reaches the retina, which converts the images into signals and transfers it to the brain via the optic nerve.

20/20 does not indicate perfect vision, but that a person can read from a chart standing 20 feet away.

Wider pupils can be the result of excitement, happiness or being under the effects of certain drugs.

It is impossible to sneeze with your eyes open due to the eyes and nose connection via the cranial nerves.

An iris has 259 unique characteristics which, like fingerprints, vary between identical twins.

Due to the lack of gravity, astronauts are unable to cry. Instead, tears collect in little balls that causes the eyes to sting.

Red-green color blindness is mainly found in men due to males having only one X chromosome that carries the genes for color receptors.

Newborn babies can only see black, white and some shades of grey but are able to see color about one week later.

Blinking is very important to your eye health. It provides the eyes with moisture and helps to rid it of any unwanted particles. For every minute that passes by, humans blink about 15-20 times and up to 28,000 times a day.

The red-eye in photos is the result of the camera flash bouncing off the capillaries in people's eyes.

Consuming fish oils, vitamin A and vitamin C will help preserve good eyesight and reduce the risk of blindness in old age.

In comparison to adults, babies only blink one or two times per minute, which is probably due to having a smaller eye opening.

Brown is the most common eye color worldwide and accounts for over 50 percent of the world’s population. Green eyes are one of the least common colors and are found mostly in people in northern and central Europe.

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