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Low vision

If you can not increase your vision with regular glasses, contact lenses or intraocular lens implants, then you have less vision. This is not synonymous with blindness. People with low vision still have a useful vision and can often be improved using vision devices. Whether your visual impairment is mild or severe, low vision means that your vision can not meet your needs. The use of visual augmentation devices is decided by the ophthalmologist only after medical and surgical treatment, or after being convinced that it will not be of benefit.
What Causes Less?
Although there are more elderly people, it is possible to see less in every age. Birth defects, hereditary diseases, injuries, diabetes, glaucoma, cataracts and aging can cause little to see. The most common cause is macular degeneration, which is a disease of the nervous layer. Macular degeneration distorts vision, does not blind, and is not affected by peripheral vision.

Are There Different Types of Little Viewing?
Yeah. Although central vision or reading impairment is the most common, decreased peripheral vision or loss of color vision may also cause less vision. Or, it may lose its ability to adapt to glare, contrast, or glare. Different types of vision require different aids. For example, a person with congenital undergrowth and a person with a low vision later develop a different need.
What is the Help Device for Less Visible?
For lesser viewers, the aid increases visibility. In all cases there is not a single device to normalize, so different devices are needed for different purposes. If possible, try before buying a device.
There are two types of aid devices for low vision:
Optically and non-optically. Assistive devices for optics that are low vision Optics for low vision aid use lenses or lens combinations for magnification. These are different from normal glasses. Optical devices can be grouped into five main groups: Magnifying glasses are stronger than normal glasses. When using these, the material to be read must be brought close to the bone, otherwise the writing will be out of focus. This can be frustrating at first, but it is familiar over time. They are designed for close-up, readable material can be held easily because they are attached to the skin. The magnifying glasses can be mounted directly on a goggle, or they can be added onto one's own glasses goggles. These are aspheric and telescopic shapes.
Telescopic ones provide a broader view over longer distances, although they are more coarse. Aspheric ones are aesthetic, but they show a narrower area at shorter distances. There are many different models of the magnifying glasses available on the market. Hand magnifiers are known by most people.
The material to be read with these can be kept at a normal distance. They can be purchased from stationers or opticians. Place the magnifying glasses on the reading material. Some must enlighten themselves. Magnifiers can be used to display vouchers, invoices, telephone directories, telephone keys, household appliances, etc., which are adequate for normal activity but require short-term close- is very useful in seeing things like. Illuminated magnifiers are recommended for patients with tremor on their hands and patients with very low vision. Telescopes are used for remote magnification. They can be used by hand or by mounting them in a goggle.
Especially useful when watching TV, reading the letters of the buses, looking at the announcements, the board, such as goggles, require effort and experience. The closed circuit television system gives a magnified view of the material to be read on a television screen. Their magnification and contrast can be adjusted and their use is easier than with other devices. It is only used to read or look at pictures. There are black and white or colored ones. Especially useful for students and desk-top businessmen. With the advancement of technology, costs have also recently dropped considerably. Help devices for non-optics lessons Large written books, newspapers and magazines;
Uniform Writing Devices;
• Large playing cards;
• Large phone keys;
• High-contrast clock displays;
• Speaking machines (clocks, computers);
• Machines that display writing and read aloud; The simplest non-optical method is to approach what is desired. It does not harm the eyes, contrary to classical belief, to approach the subject that is desired to be seen.

Less Visible Kimselere Lighting Important Midir?
Appropriate lighting is as important as a help device for low vision. To do a similar job, a healthy person at age 60 needs twice as much illumination as he is at age 20.
A few important notes about lighting: Keep the lighting source close to the material to be read. Use high intensity lights with adjustable arms for this purpose.
• Use a shield to prevent the reflected light from disturbing.
• Absorbent lenses can be used if there is drowsiness.


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