DIAGNOSTIC TECHNIQUE FOR DYNAMIC REFRACTION Russian patent published in 2012 - IPC A61B3/28 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely ophthalmology and aims at objective examination of a state of dynamic eye refraction. A clinical refraction is measured. Test objects stimulating accommodation are presented to a patient at preset distances. An 'open-field' autorefractometre is used to measure the dynamic refraction for each preset distance. Loss of accommodation is measured by subtracting the clinical refraction from each dynamic refraction; the derived values of loss of accommodation (DVLA) are compared to the estimated values of the required loss of accommodation (EVRLA) for the preset distances stated above. If at least one DVLA is decreased by 25 percent and more or increased by 10 percent and more as compared to the EVRLA, disturbed dynamic refraction is diagnosed.

EFFECT: method provides higher examination reliability and measurement accuracy ensured by examination objectivity.

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