Field

The visual field is the space in front of the eye that is perceived by the eye. It is limited to the cornea, lens and retina. The field of view may also be limited by bony prominences such as the frontal tuberosities, zygomatic bones, etc. The shape of the field of view is round (when looking at a white dot) or oval (when looking into the distance).

The visual field is the space in which a person can see objects. It is bounded anteriorly by the cornea and posteriorly by the retina. The visual field consists of two parts: the central visual field, which is located in the center of the eye, and the peripheral visual field, located around it.

The central visual field is the area that is located in the center of the eyeball and is used to perceive objects in the immediate vicinity of the eyes. The peripheral visual field is the area around the center of the eye that is used to perceive distant objects.

To assess the visual field, special tests are used, for example, a color vision test. This test determines how well a person sees colors. To do this, different colors are shown on a computer screen or on paper, and the person must say which colors he sees.

Field is a term used in radiation therapy to describe the area of ​​the body that is being treated with radiation therapy. In radiation therapy, the field can be defined as a strictly limited area that is exposed while surrounding tissue is protected from radiation.

For example, when treating Hodgkin's disease in the mantle field (mantle field), it enters the neck, axilla and central area of ​​the chest. This field is determined using computer technology and includes only those areas that should be irradiated.

In addition, in radiation therapy the term “visual field” is used, which describes the space in front of the eye as perceived by a person’s stationary eye. If you open both eyes, you can see a well-lit area that extends far in front of the eyes. However, if you look with only one eye, your field of vision will be limited.

The field of vision may also be limited due to various factors, such as the presence of nearsightedness or farsightedness. If an object is too far away or dimly lit, a person may not be able to see it completely.

Thus, field and field of view are important terms in radiation therapy and ophthalmology, and understanding their meaning can help in proper treatment and diagnosis of diseases.

Field or "Field" is a special term used in the field of radiation therapy that describes the area of ​​the body that will be treated with radiation therapy techniques to treat a specific disease. Radiation therapy is a treatment method in which radioactive radiation generated by a radiation source (eg, nuclear reactor, X-ray tube) is directed at a specific area of ​​the body to kill cancer cells. At the same time, healthy cells surrounding the affected area remain untouched.

One example of the application of a field in radiation therapy is the mantle field (also known as a region, a limited area) or the area that is treated with methods