SET FOR OBJECTIVE VISOMETRY BASED ON RECORD OF PREDOMINANT SIGHT FIXATION

摘要

The set for the objective visometry based on the record of the predominant sight fixation comprises the three-valve screen, the stationary fixed shutter, and the cards with the test fields. The test field in the grey background represents the circle with the indistinct outlines. The angular dimensions of the circle match maximally the angular sizes of the macular part of the retina. The whole circle is filled with the grids being sinusoidal in the shape within low spatial frequencies with the gradual transition from black bands to white ones and to the grey background around the circle.