METHOD FOR ASSESSING MONOCULAR EYE FIXATION STABILITY IN PATIENTS WITH AMBLYOPIA Russian patent published in 2015 - IPC A61F9/00 A61B3/24 

FIELD: medicine.

SUBSTANCE: fixation stability is tested by means of MP-1 Nidek technologies apparatus. A patients looks at a cross-shaped fixation mark. The apparatus records and matches fixation points with a patient's eye ground image automatically. A percentage of fixation points entry into an area of 2° from the fixation mark is determined. A fixation field width is calculated, expressed in degrees by overlaying a tangential grid onto a patient's eye ground digital image with the fixation points marked regardless of the fixation field location. If the fixation point number found in the area of 2° varies within 70 to 85% with the fixation field width up to and including 3°, the visual fixation is considered to be stable. If the fixation point number found in the area of 2° varies within 50 to 69% with the fixation field width from 4 to 5°, the visual fixation is considered to be relatively stable. The fixation point number of less than 49% in the area of 2° alongside with the fixation field width of more than 5° shows the unstable fixation.

EFFECT: more objective, reliable and accurate diagnosis.

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