Dioptograph

A dioptograph is a device that is used to measure the angle of vision of the eye. It consists of two lenses that are located at a distance from each other and create an image on the screen. When a person looks at a screen, the dioptograph measures the angle between the eyes and the screen.

The dioptograph is used in medicine to diagnose eye diseases such as myopia, farsightedness and astigmatism. It can also be used to determine the correct correction of glasses or contact lenses.

In ophthalmology, a dioptograph is used to determine the optical power of the eye. This is very important for selecting the correct vision correction. In addition, a dioptograph can help identify hidden vision defects such as astigmatism or strabismus.

However, the dioptograph may not always be accurate. For example, if a person has problems focusing his vision, then the dioptograph may give an incorrect result. In addition, some people may have individual vision differences that cannot be accurately measured by a dioptograph.

Thus, the dioptograph is an important tool for the diagnosis and correction of eye diseases. However, its accuracy depends on many factors, so it must be used in conjunction with other diagnostic methods.

A dioptograph is a device for measuring quantities that affect human vision. For example, data and parameters of the diopter surfaces of the eye, reflecting the spectral composition of radiation with the wavelength selected as the length of the characteristic, or their optical brightness. In the case of ophthalmological studies, contact lenses are also characterized by diopters, which also directly affect the accommodative apparatus of the eye. The name “ciliary contact lenses” has been proposed for them.

Tasks and purposes of the dioptrometer: * determination of visual parameters of objects located near the eyes before the eyes fixate on the object in question, including indicators of the human optical vision system, reflecting the properties of stereoscopic vision;

* measurement of a number of parameters that determine the relative location and interaction of the diaphragm and a point object in the process of visual work. Such parameters include the focal length of the lenses, the focal lengths of the lenses of the corrective system of the eye or contact lens, the range of the visible field, the distance from the edge of the cornea to the shadow formation zone, the accuracy of detecting objects at a distance in front of a person; * additional goals, for example, assessing the distribution of brightness of the retina and the space of the visual analyzer by determining the brightness threshold of contrast, the density of spatial impulses in the eye, the dependence of the rate of suppression of stroboscopic light over time, and the adaptive ability of the optical system.