In modern optics, there is a unique layer-by-layer technology for creating lenses for glasses.In this case, each layer has special characteristics, which allows to improve the quality of traditional optics and create special glasses for color-blinds. They look like ordinary sunscreens, but they have a special functionality. Using these means of vision correction, patients suffering from different forms of color blindness will be able to see objects in their natural colors. The main secret of glasses from color blindness - the presence of a special coating. It was developed by chance and is suitable for correcting all defects of color perception.
Content
- 1Definition of disease
- 2Method of correction with glasses
- 3Types of glasses
- 4Terms of use
- 5Video
- 6conclusions
Definition of disease
Color blindness is a congenital or acquired visual impairment, in which a person does not distinguish certain colors.There are three kinds of color blindness:
- protanopichesky (the perception of a red part of a spectrum is broken);
- Deuteranopic (man does not see green colors);
- tritanopic (there are problems with the reproduction of the blue and violet parts of the spectrum).
The most severe is a violation of color perception, or monochromasia. This is usually a hereditary disorder that is transmitted through the X chromosome. Women from monochromasia suffer very rarely.
More recently, patients with color blindness had to learn to live with their ailment, as there was no remedy for vision correction.At the moment there are special glasses that allow color blinds to see colors the same as they are seen by fully healthy people.
A test for color blindness can be done here.
Method of correction with glasses
The main feature of glasses from color blindness is the presence of a special multilayer coating on the lenses.It cuts off part of the light spectrum, which normally should have reached the retina of the eye. In this case, the coating-filter passes the base colors, thereby enhancing the contrast between them.
Filter-coating glasses for color-blinds does not pass through a certain color, so that the color of objects is reflected in the desired form.
How do glasses work from color blindness? The first thing that scientists did was to build a mathematical model of the vision system of a healthy person, and then the visual system of color blindness. On the basis of the received data, they created a program for calculating the filter, taking into account what picture should ultimately appear on the retina.Glasses work only with natural light or light close to it.They are meant to be worn outdoors, are sunscreen.
Correction tools do not work when recognizing images on electronic screens.
There were glasses for color-blinds accidentally - the researchers wanted to create lenses for laser surgery that would cut off some of the waves in the visible spectrum.One of the developers, suffering from color blindness, put on a prototype and found that the visual function improved. Scientists became interested in this phenomenon and began to work actively on the creation of color-improving lenses. In each case, the lens is drawn from those layers that are needed to correct certain violations.
A healthy person, wearing glasses for colorblind, will see objects as usual.
At the moment, the production of unique correction tools is put on stream.Studies are constantly ongoing, so new modifications are coming on the market. They successfully undergo various tests and have an affordable cost.Points can be worn by patients with different types of color blindness, as different models correct the conflicts of green, and red, and gray, black, pink.A special coating protects the lens from scratching and prolongs the life of the lens.
Types of glasses
Complex computer calculation allowed to create special programs for the selection of coatings, and effective glasses from color blindness.As we said above, they work only in natural light or artificial, if it is as close as possible to it. To use the PC or watching TV glasses use no sense.
On sale are 2 types of glasses, which are designed for patients with color blindness of different types. The most common violations are:
- protanomaliya - that is, a violation of the perception of red;
- deuteranomalia - weakness of perception of green shades.
For each type there are glasses with certain types of filters, namely Enchroma Cx-PT for patients diagnosed with protanomaly and Enchroma Cx-D for people with deuteranomalia.
The main types of violations of color perception are protanomalia and deuteronomy. For them, different types of coatings are provided - Enchroma Cx-PT and Enchroma Cx-D, respectively.
To correctly choose glasses, the patient must pass a test for color disturbances.According to the results of the test, the doctor will be able to correctly determine the degree of visual impairment and choose the appropriate correction means.
In addition to the type of lens, you can choose a frame. It can be of three types:
- MetalGray or black obadkovaya large sizes.
- Plasticblack medium size.
- Wide plasticwith side curtains.
Since eyeglasses are not only a means of vision correction, but also a stylish accessory, be sure to try them on before buying, to see if the frame is coming or not.
Terms of use
For night wearing glasses for color-blind are not suitable - they can only be used in daylight.At the moment, studies are under way, which should lead to the emergence of new developments such as lenses from color blindness for night vision, working at a computer, watching TV (but so far in sales of such models no).
In the near future should appear glasses from color blindness for night wearing, working at the computer. So far, there are no such models.
There are no general contraindications to the use of the correction agents under consideration.The main thing is to choose the right type of lens coating, which will provide excellent visibility, and find your "own" frame.
Video
conclusions
Lenses of glasses from color blindness contain a special multilayer coating, which serves as a light and color filter - that is, cuts off part of the light spectrum that falls into the eye. Basic colors pass through the shell, and the contrast between them intensifies. Special models have been created on the basis of a program comparing the indices of healthy people and color blindness patients. Types of coatings - Enchroma Cx-PT (used in protanomalia) and Enchroma Cx-D (shown for humans and deuteronomy).To maximize the quality of color perception with the help of special glasses, consult a doctor - he will conduct a test, determine the type of color blindness and select the best type of coverage for you. Eyeglass frames can have any shape (wide, narrow, large, etc.), materials of manufacture of metal or plastic. Use them as correctional and conventional sunscreens.To work at the computer, wearing a lens with a special coating-filter is not suitable at night. A healthy person, wearing glasses for colorblind, will see objects as usual.
