About animals

10 unusual eye diseases that could happen to everyone

Pin
Send
Share
Send


As you know, the eyes are the mirror of the soul and the first thing we pay attention to when we first meet a person. In the world there are only 4 colors of the iris - brown, gray, green and blue. But pigmentation, mixing of shades and the presence of a different percentage of melanin in the process of evolution contributed to the emergence of many variations. So there were the rarest eye colors in humans.

The first place deservedly took the purple color. At the genetic level, such eyes are considered to be similar to blue and are very rare.

Only 2% of the world's population have green eyes. Moreover, it occurs in women almost 3 times more often than in men, and is often combined with red hair.

In 5–8% of people, one can see a swampy eye color containing a large number of shades that generate interesting visual effects.

Amber eyes are considered a variety of brown. In its pure form, they almost never occur. But the shades of amber color are also rare and beautiful.

Walnut color is one of the most complex shades that the iris can have.

Black color deservedly got into the list of rare ones. This type of eye prevails among members of the African population.

Of great rarity are eyes of different colors. They are explained by heterochromia - a physiological feature of the body.

Another unusual phenomenon is chameleon eyes that change color. This usually happens under the influence of human emotions or external factors.

Gray is considered to be a shade of blue, but in its pure form it is extremely rare.

If nature has given you a rare eye color, this should be appreciated. Never be afraid to be unusual. It is so attractive!

As you know, the eyes are the mirror of the soul and the first thing we pay attention to when we first meet a person. In the world there are only 4 colors of the iris - brown, gray, green and blue. But pigmentation, mixing of shades and the presence of a different percentage of melanin in the process of evolution contributed to the emergence of many variations. So there were the rarest eye colors in ...

The first place deservedly took the purple color. At the genetic level, such eyes are considered to be similar to blue and are very rare.

Only 2% of the world's population have green eyes. Moreover, it occurs in women almost 3 times more often than in men, and is often combined with red hair.

In 5–8% of people, one can see a swampy eye color containing a large number of shades that generate interesting visual effects.

Amber eyes are considered a variety of brown. In its pure form, they almost never occur. But the shades of amber color are also rare and beautiful.

Walnut color is one of the most complex shades that the iris can have.

Black color deservedly got into the list of rare ones. This type of eye prevails among members of the African population.

Of great rarity are eyes of different colors. They are explained by heterochromia - a physiological feature of the body.

Another unusual phenomenon is chameleon eyes that change color. This usually happens under the influence of human emotions or external factors.

Gray is considered to be a shade of blue, but in its pure form it is extremely rare.

If nature has given you a rare eye color, this should be appreciated. Never be afraid to be unusual. It is so attractive!

Cat eye syndrome

Cat Eye Syndrome is an unusually rare chromosomal disease. It is congenital and cannot be treated. The syndrome was named due to its symptom when some tissues are missing in the eye, which leads to the narrowing of the pupil and its location inside the iris. It is worth noting that this symptom is not observed in all people with cat eye syndrome.

This syndrome also affects the bones, heart, and kidneys. In addition, people suffering from feline eye syndrome often have mild mental disability or hyperactivity. The disease is easily detected at an early stage, accompanied by a noticeable growth retardation. It is impossible to completely get rid of the syndrome, but thanks to individual treatment, you can significantly reduce the severity of symptoms and improve vision.

Eye paralysis

In the event of this disease, the eye loses all motor and sensory functions. This is a fairly common eye condition, which manifests itself through the appearance of various symptoms. Among them are peripheral artery disease, diabetes mellitus, pituitary edema, and problems with the cardiovascular system. Eye paralysis can be caused by Kearns-Sayre syndrome, which accumulates pigment behind the eyeball and is accompanied by heart disease. Also, this syndrome can cause seizures and deafness, which occur in adolescence. In some cases, eye paralysis is caused by Moebius syndrome, which paralyzes the entire face. The treatment for eye paralysis directly depends on the disease that caused this condition. If you manage to get rid of it - paralysis also recedes.

By the way, on our site thebiggest.ru there is a very interesting article about the biggest eyes in the world. In it you will learn from which representatives of the animal world truly huge eyes, and also see photos of some "big-eyed" celebrities.

Felbert's freak collection

The eyes are the mirror of the soul. From the eyes you can determine the mood of a person, his intentions, character. This can be done both by the expression of the eyes and their color.

All over the world there are people with the most diverse and strange eyes. Someone simply does not have an eye, and this is his peculiarity and strangeness. Should such people be considered strange? Or are they special anyway?

Here are 10 of the strangest cases that concern the human eye. Let's get a look.

1. Eyeball with hair

Doctors Ali Mahdawi Fard and Leyli Purafkari operated on a patient, a 19-year-old guy who had a hair clot removed from his eye. The guy came to the clinic and said that he had such a clot from birth, but over the years he grows and interferes with him. The patient did not feel physical discomfort, but nevertheless the “hairy tumor” interfered with his vision. The doctors made a lot of efforts, and the operation was successful. Now the guy has not just beautiful eyes, but also excellent eyesight.

2. Two-pupil eyes

In fact, such a defect is not described in the medical literature, but there is still a legend that tells about the Chinese state minister Liu Chong, 995 BC. e., who suffered from this disease.

The fact that Billy has such a defect does not bother him, since he is often invited to appear in zombie films, so he makes a lot of money on his lost eye.

4. Bulging eyeballs

On November 2, 2007 in Istanbul, an unusual ability was documented.

5. Eye piercing

An eye piercing is a piercing in the eye that is installed through the eyelid or through the eyeball. This is very risky, but it looks very extraordinary.

6. The eye that smokes

A man living in the Chinese city of Shanghai holds a cigarette with his eye and exhales smoke through his mouth in front of a surprised audience.

7. Eyeball cancer

Retinoblastoma is a disease, a rare form of eye cancer. It usually develops in childhood, under the age of 5 years. Cancer infects the retina of the eye, a light-sensitive tissue located at the back of the eye. She recognizes light and color.

An implanted tooth is a canine called an “eye tooth.” This tooth was previously removed from Martin's mouth. Specialists introduced the artificially created lens of the eye into its base and fixed the element under the eyelid, thus allowing the tissue to grow and develop.

This procedure gave vision to 600 people who were deprived of vision.

9. Tumor of the eye due to teeth

The same case was first recorded 149 years ago. From that time to the present day, only 70 people have suffered such a serious illness.

10. Squirting milk from the eye

Ilker Ilmaz is a 28-year-old man who became a champion due to the fact that he "sucked" milk with his nose and sprinkled it through his eyes at a distance of 3 meters. Such a record was recorded on August 31, 2004 in Istanbul, Turkey.

According to scientists, the eyes evolved 540 million years ago. Today, vision is the most important feeling for many animals, including humans. Take a look at some of the strangest and most incredible eyes in the animal kingdom.

Four-eyed

These fish live in Mexico and Central America. They are very small, up to 32 cm in length, feed on insects, so most of the time they spend near the surface of the water. Despite their name, these fish have only 2 eyes. However, these eyes are separated by a vein, and each half has its own pupil. This strange adaptation allows the four-eyed to see well both above and below the water.

Stalk-eyed Flies

These small but unusual creatures live in the jungle of southeast Asia and Africa. They got their name because of the long protrusions on both sides of the head with eyes and antennas at the end. In males, such stems are longer. According to observations, females prefer males with longer stems.

Tarsier

This is a small nocturnal primate living in the rainforests of southeast Asia. This is the only predatory primate in the world, it feeds on lizards, insects and even birds. But its most interesting feature is its huge eyes, disproportionately large in relation to the whole body. If these proportions are applied to a person, then his eyes should be the size of a grapefruit. Tarsiers have very sharp eyesight. It was even assumed that they could see ultraviolet light. On the other hand, tarsiers do not distinguish colors well, like many other nocturnal predators.

Chameleon

Chameleons are known for their ability to change color, which helps them communicate and express their intentions or mood (only a few types of chameleons use color change as camouflage). These lizards also have very unusual eyes. The eyelids are completely connected, there is only a small click for the pupil. Each eye moves independently of the other, which allows the chameleon to monitor prey and a possible threat at the same time.

Dragonfly

The eyes of a dragonfly are so large that they cover almost the entire head, making it look like a helmet and giving a 360-degree field of view. These eyes consist of 30,000 parts, each of which contains a lens and several photosensitive cells. Dragonflies have excellent vision. They can detect colors and polarized light, and dragonflies are especially sensitive to movements.

Leaf-tailed gecko

The leaf-tailed gecko has very unusual eyes. He has vertical pupils in which there are several "holes". These holes expand at night, allowing these lizards to see better. The eyes of the gecko contain much more photosensitive cells than the eyes of a person, allowing the animal to detect objects and even distinguish colors at night. While cats and sharks see 6 and 10 times better than humans, geckos are 350 times better.

Colossal squid

This is the largest invertebrate known to science. This squid also has the largest eyes in the animal kingdom. Each eye can be up to 30 cm wide. Such large eyes allow the squid to see in the twilight, which is very useful for an animal that spends almost all of its time hunting at a depth of 2000 m under water.

Opistoprokt

Opistoproct is a deep-sea fish with one of the strangest eye structures. A characteristic feature of opistoproct are the eyes of a cylindrical shape, directed upwards.

Mantis Cancer

These cancers are known for their aggressiveness and unique weapons (they have a very sharp and powerful claw that can easily cut a human finger in two and break glass in an aquarium). Mantis crayfish have the most complex eye in the animal kingdom. They distinguish 12 primary colors - four times more than people, as well as various types of light polarization, that is, the direction of oscillation of the light wave. Photosensitive eye cells rotate relative to the plane of polarization of light, perceiving almost the entire visible spectrum - from the ultraviolet border to the infrared. Now we can only guess how the world looks for this crustacean.

Ogre spider

Spiders, as you know, have many eyes. The ogre spider has 6 of them, but it looks like 2, since the average pair of eyes is very large. All this serves to improve night vision. Ogre spiders have excellent night vision, not only because of the size of their eyes, but also the large number of photosensitive lenses covering them. This membrane is so sensitive that it breaks down every morning and grows at night.

Hippus

Rather, a certain condition than a medical illness, hippus can occur in anyone. In this state, when light enters the eyes, the pupils will alternately narrow and expand for a certain time until the eye gets used to a new, brighter environment. In principle, this is an ordinary reaction of the pupil, and if it does not occur in the given circumstances, this may be a sign of medical abnormalities.

But if hippus occurs in a normal environment and in normal light, this can be due to several reasons, including neurosyphilis, meningitis, and even multiple sclerosis. It can also be associated with cerebral tumors, cirrhosis, and renal failure.

Tumors of the eye

Eye tumors usually appear behind the eyeballs, causing discomfort. There are also cases of "frontal" tumors called limbal dermoids. Almost all such tumors are benign and are not accompanied by vision problems, since the central part of the cornea is rarely affected. Doctors who have experienced limbal dermoids (one doctor, on average, has 1-2 cases of this eye tumor in all medical practice), claim that patients often do not need surgical intervention, since the tumor does not cause discomfort, except for astigmatism, which occurs in mild form.

In extremely rare cases, limbal dermoids produce cartilage, hair growths, and even sweat glands. One patient from Iran, who wished to remain anonymous, underwent surgery to remove the eye tumor, as hair began to appear from it.

Eye Herpes

Ocular or ocular herpes is often caused by the chickenpox virus or is a type 1 herpes simplex. Unlike genital herpes, ophthalmic is not sexually transmitted. It is worth noting that during life, most people are exposed to some form of herpes, without even noticing its symptoms. Ocular herpes is felt as pain or a pulsating eyelid. The disease, as a rule, disappears within a week, and occurs through redness of the eyes, migraines and photosensitivity.

In some cases, the virus can affect the cornea, leading to more complex symptoms. Very rarely, herpes can be transferred to the eyeball, which will lead to temporary loss of vision.

Red eyes in albino people

Albinism is a condition caused by an insufficient amount of melanin. This pigment is responsible for the color of hair and skin. With a lack of melanin, the color of the eyes also changes, which can be pink or red. Since albinos suffer from a lack of pigment, their eyes cannot be red. The bleached iris becomes so transparent that the blood vessels located behind it are translucent, creating a reddish tint.Also, a lack of melanin is accompanied by a decrease in the effectiveness of the retina when absorbing light. Because of this, albinos suffer from photophobia, an uncomfortable or painful reaction to light that can damage the eyes. Albinism also slows down eye development, accompanied by astigmatism and other vision problems.

Star in the eye

A man from Austria, who received a severe blow to his face, after 9 months turned to the doctor with complaints of visual impairment. During the examination, the doctor found in the eyes of the patient a cataract in the form of a star of perfect shape. Often, cataracts form after a stroke in the eye. In this case, a blow can disrupt the structure of the lens, making it opaque in several places. The unusual form of cataract in this case was a mere coincidence. To treat cataracts, Austrian doctors used sound waves that broke it. After the procedure, it was removed, and an artificial lens was "mounted" in the eye socket.

A more serious case of star-shaped cataracts occurred in California in 2004. In the process, the electrician accidentally touched his shoulder to the bare wires that passed 14,000 volts through his body, also touching the optic nerve. From the power of shock and shock in his eyes appeared "stellar" cataracts. Despite the fact that the doctors removed the cataracts, the nerve damage was so great that the man remained with limited eyesight for life.

Heterochromia

Everyone knows that the term heterochromia means the difference in the color of the eyes of one person. The people call it disagreement. In most cases, heterochromia is inherited, but can also be acquired after birth. Heterochromia is benign, although it can sometimes be one of the symptoms of the underlying disease - Waardenburg syndrome.

The manifestation of heterochromia may differ slightly, since not in all cases it is necessary to encounter eyes of different colors. Some people have two different colors inside the same eye, for example, in the case of sectoral heterochromia, a person may have two blue eyes, but the fourth part of the iris can have a brown or reddish hue. The third type of disagreement is central heterochromia, in which a ring of a different color forms around the pupil.

Policory

True polycory is one of the most rare occurrences that can happen to your eyes. Due to just a few recorded cases of such a defect, doctors still do not know the cause of its occurrence. People with true polycoria have two or more pupils in one eye. The pupils are in the same iris, but equipped with their own sphincters, and can function independently of each other.

A much more common defect is the false polycorium. People with this phenomenon, as a rule, have two or three pupils. However, unlike the true polycoria, the false pupils are not active, and are only holes in the iris, without the content of the sphincter. One woman in Massachusetts had five pupils in one eye that did not cause particular discomfort or vision problems, except for a slight inconvenience in too bright a light. In addition to slight loss of vision, polycoria does not have a serious effect on eye function.

Hemolacria

Presumably one of the most amazing medical conditions, hemolacria is better known as “crying blood.” About 10 years ago, teenager Calvino Inman discovered that blood was flowing from his eyes. Reasonably assuming that he was dying, Calvino went to the hospital, where he was subjected to computed tomography, MRI and ultrasound. None of the procedures revealed any abnormalities in him. Until today, doctors have not been able to fully understand the cause of bleeding eyes in the process of crying at Calvino Inman.

Another patient, Michael Spann, felt a severe headache, after which blood flowed from his eyes, mouth and nose. Since then, he has had “attacks” of hemolacria at least once a week. This greatly influenced the future life of Spann. According to the man, he was fired from many jobs because of bleeding from the eyes. Interestingly, Spann, like Inman from Tennessee.

In a 2004 study, doctors examined four children with hemolacria who, as a result, got rid of the diagnosis without any treatment. The reason for the development of the disease in Spann and Inman is unknown, but Spann is already recovering - at the beginning of the discovered condition, he cried blood at least 3 times a day.

Pin
Send
Share
Send