6 different types of visually impaired people see the world.

Eyes help us understand the world, but what will the world look like for people with visual impairments? There are many types of visual impairment, such as some people are caused by congenital factors, some people are blinded by accidents, some patients are completely blind, and some people are only partially blind.
small editor today to show you, 6 different types of visual impairment people in the eyes of the world.
all-blind people don't know black once thought the blind people saw it was probably dark, but that wasn't the case.
for patients with total blindness, they are born without vision, not because the eyes can't see it, but because their brains can't process visual information. how can
understand what we call the concept of 'black'? There are congenital all-blind patients spitting slot said they are often asked whether their eyes are dark, they will be very helpless: so what is black? And what their eyeballs receive is 'nothing', which is hollow.
If you also want to simulate this feeling, one way to get around online might be a try: you can try to close one eye and cover it with your hands, and look at it with only the other eye, and what your closed eyes see is the legendary void, that is, nothing.
patients describe that there will be no images or images in their dreams, but other sensories such as touch and smell can form their dreams.
often have hallucinations after the day after the day of hallucinations caused by various accidents and other causes of the phenomenon of total blindness is relatively rare, but still exists.
, the patient is usually blind because of damage to the visual nerve in the brain, or because the eye is removed.
for such a group, they have seen all kinds of things in the world, have a lot of pictures and concepts for a lot of things, they can understand what black means. After
blindness, the world that was once visible to the naked eye suddenly became empty and nothing, and according to the patients, who were completely blind, the picture in front of them was black, as if they were in a completely dark cave. As a result,
, according to scientists, such patients are particularly prone to nightmares, and physical and psychological trauma increases the number of nightmares. One symptom that
had to mention here was charles Bonnet Syndrome (CBS), also known as visual release hallucinations.
refers to a complex symptom of visionary vision that occurs in patients with vision loss or vision loss, mostly in elderly patients.
that is, they clearly say that their eyes can no longer see anything, but often insist that they sometimes see a flash, a person, a car, a building and so on. Dr. Oliver Sachs,
New York University Hospital, explains that this phenomenon often occurs in patients who are completely blind or semi-blind, and that the flashofers are mostly projected in memories.
the vague lysis of blind people in front of us are not all blind, and some are partially blind, and it may be more accurate to use the word 'visual impairment' to describe them than the word 'blind'.
people with visual impairments are also different, and the world seen by a visually impaired person in the United States, Marc Muszynski, is a bright light.
Marc was a visual disorder caused by a genetic mutation, and his ABCA4 gene mutateed, causing him to gradually lose his photosensitive cells after birth.
his vision was normal at birth, but it wasn't until he took a vision test after kindergarten that he noticed a problem with his vision and he couldn't see what the teacher had asked him to identify.
he went to the hospital and doctors determined he had a visual disorder with a genetic mutation.
, according to Marc, the middle of his visual picture is a blur, and he can't tell the color.
other than that, his eyes were particularly sensitive to the light, so when he went out during the day to walk in the sun, the world was in the glare of his eyes, particularly bright.
and every time he communicates with others, he can't see each other's faces, see things are also a blur, in front of his eyes presented in the world, everything is out of focus.
blind people who can only perceive light have a group of visually impaired patients who can only feel the presence of light, which means that their eyes can feel whether the light is shining down, some people can even distinguish the light source, and everything except light is non-existent, are empty.
some people look at everything that is round in the eyes of a person with a tube-shaped visual impairment, and what they can see is limited to objects within a certain range, with limited line of sight, which feels like looking at everything from a tube, a disease that is usually caused by damage to the optic nerve.
a simple simulation, we can roll a piece of paper into a barrel, or put a tube directly in front of our eyes, at this time our line of sight is relatively narrow, we can not see anything other than this cylinder.
this condition is exactly what patients suffer every day.
color-blind eyes what kind of color blindness in all kinds of visual impairmentcan can be said to be relatively common, many people because of color awareness recognition barrier degree is relatively light, do not go to the hospital are not aware that they suffer from color blindness.
color blindness can be broadly divided into red blind, green blind, blue-yellow blind and all-color blindness.
in the eyes of a person with normal color recognition, the traffic light is this: red-blind patients are not red because they can't tell red, and the traffic lights they see are not red.
and green blinds can't tell the difference between green, and traffic lights are shown in their eyes as shown in the following image.
seen from the perspective of ordinary people, the color of the picture is somewhat similar to the red blind eyes of the traffic lights: blue-yellow blind is unable to distinguish between blue and yellow, their eyes of the traffic lights and blue sky is another scene, blue and yellow in their vision is missing state: and all-color-blind patients in the eyes of all the gray state, only light and dark, this situation is quite rare.
we change the picture, ordinary people see the vegetable melon fruit long like this: red-green blind patient's eyes, red and green missing: red and green missing in the eyes of red-green blind patients: for blue-yellow blind patients, blue and yellow is missing, red is more distinct: for blue-yellow blind patients, blue and yellow is gone, red is more distinct: put these four conditions in the same frame, the visual impact is more obvious.
put these four conditions in the same box, the visual impact is more obvious.
look at these perspective simulations of people with visual impairments to discover how deeply they previously misunderstood the world they could 'see'.
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Source: Mad Pill Science.