Eye Movement Fixation

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Fixing eye movements (from Latin fixation - installation) are complex somatic movements of the eye, as a result of which the eye takes a fixed position, which is due to installation reflexes.

As a consequence, eye movements are recorded and include the righting reflex and accommodation. The setting reflex is manifested by a rapid limitation of the amplitude (or inhibition) of movements that have already begun, which allows the visual analyzer to correctly adjust the image and makes it possible to understand the spatial correspondence of adjacent parts of the image to each other.

Accommodation is the fluctuation of the refractive power of the optical system of the eye when viewing objects at different distances. The result is a clear image of the object. Accommodation and adjustment reflexes are regulated by the autonomic centers of the coordination systems of the visual analyzer. These eye movements can be performed either together or separately. The amount of movement required to capture an image depends on how far away the object is. A wide range of eye movements is required for its long range. The endpoints of these eye movements are low- and high-resolution areas of the retina. The amplitudes of movements can vary greatly for different distances to objects - from a few degrees to 20° or more.