Anizeikonometer

Aniseikonometer (from the Greek anisos - unequal, eikon - image and metreo - to measure) is a device for measuring aniseikonia, that is, differences in eye refraction.

Aniseikonometer allows you to quantify the degree of anisometropia (difference in refraction) and astigmatism (difference in corneal curvature) between eyes.

The operating principle is based on the subjective perception of images by the subject. The patient looks into the device and sees two separate images - one for each eye. Then, using adjustments, it achieves the alignment of these images. Based on the adjustments, the device calculates the difference in eye refraction.

Anizeikonometer is widely used in diagnosing binocular vision disorders, as well as for selecting corrective lenses and prisms.

Synonyms: anisoeikonometer, ophthalmoeikonometer, eikonometer.

Aniseikometer is a device that is used to measure aniseikonia (the difference in distances from the pupil to the surfaces of the eye for the left and right eyes). Aniseikonia is one of the important indicators that allows you to assess the state of vision and determine the presence of refractive errors of the eye.

Aniseikonia occurs as a result of an irregularly shaped cornea or irregular curvature of the surface of the eye. This can lead to the image that reaches the retina being not entirely clear and distorted. The operation of the aniseikometer is based on this fact.

Two methods are used to operate aniseikometers: the refractive method and the myographic method. In the first case, a beam of light is directed onto the cornea of ​​the eye using a special beam and the distance from the lens to the surface of the iris is measured. In the second case, the device measures the difference in the time the image arrives at the retina.

Operation of the aniseikomter in combination with other research devices