METHOD FOR DETERMINING COMPLEX HAND-EYE REACTION RATE OF PERSON BEING TESTED AND DEVICE FOR IMPLEMENTING IT

摘要

FIELD: medicine.SUBSTANCE: recognising an optotype involves recording a pupil centre trajectory. A round template is placed next to the eye so that to align a sharp image of the template and the eye of the person being tested on one shot. A video camera is adjusted for sharp images of the pupil and template. An optotype recognition signal is supplied, and simultaneously the optotype is displayed on one of the monitors located at the same angular distances in relation to an optical axis of the video camera. A reported video sequence of the pupil centre trajectory corresponding to correct optotype identification is recorded. The template centre is positioned on the shot and considered to be a reference point. The template diameter is measured on the shot, and a scale factor is calculated. The pupil centre dimension is determined on each shot in relation of the reference point; the time of the pupil centre travel, and the derived time is used to state the analysed complex hand-eye reaction rate. That involves using a device comprising a head fixative coupled with a recorded connected to a control and data processing unit. That is also connected to an optotype presentation unit; a template rigidly connected to the fixative and placed in the same cavity with the eye of the person being tested is introduced. The recorder represents a high-rate video camera placed on a visual axis of the person being tested and connected to the control and data processing unit through a single converter. The optotype presentation unit is presented in the form of two monitors at the same angular spaces in relation to the optical axis of the video camera.EFFECT: invention provides more accurate measurement of the hand-eye reaction that enables higher information values of diagnostic signs.2 cl, 1 dwg, 1 ex