Perimeter

A perimeter is a special device that is used to measure a patient's field of vision. It consists of two parts: a screen and a patient chair. The patient sits in a chair and the screen is placed in front of him at a distance of about 40 cm. The doctor asks the patient various questions to determine the area of ​​vision that cannot be seen by the patient.

The perimeter is used to diagnose various eye diseases such as glaucoma, cataracts, retinal detachment and others. It can also be used to evaluate the effectiveness of treatment and monitor the patient's condition.

In ophthalmology, the perimeter is one of the most important tools for diagnosing and treating eye diseases.

One of the most important diagnostic methods in ophthalmology clinics is perimeter measurement. The perimeter is used to assess the state of visual function and determine possible eye diseases. This diagnostic method allows you to determine the boundaries of the visual field, determine the degree of vision loss and study the functionality of the retina in various aspects (central vision, peripheral visual field, etc.).

Perimetry can be performed using different types of perimeters, including achromatic perimetry, kaleidoscopic perimetry, and complex perimetry. The achromatic perimeter complex uses test markers placed in different corners of the visual field to determine points in space where the subject’s visual abilities are reduced. Test markets can be presented in a specific pattern to highlight a specific direction of visual opportunity. The kaleidoscopic perimetric system also uses multiple test mark positions to identify different aspects of visual functionality.

Among the most common causes of vision problems are degenerative changes in the lens, which disrupt the shape of the lens. In addition, such changes provoke damage to the vascular system of the eyeball,