Detecting method and device for compensation type variation position error elimination nystagmus total graph

Abstract

The invention relates to a detecting method and device for a compensation type variation position error elimination nystagmus total graph. The motion of the head relative to an observed object is quantified, and the head motion and the eyeball motion are overlapped to obtain an absolute track of the eyeballs relative to the observed object. Meanwhile, tracks of the head and the pupils moving along with a light pot are shot, the two tracks are overlapped, and an eyeball absolute motion track is obtained; and then the track of the eyeballs along with the light spot is calculated, a difference value of the track and the absolute motion track is a track of a nystagmus amplitude, horizontal, vertical and rotating angle amplitude track graphs of the nystagmus of different positions within continuous time frames are drawn, and accurate data are provided for diagnosis. The detecting device comprises a video shooting helmet system, a correction system, a visual motor screen system, a seat and a system main machine. By means of the method, influences of the head final motion on measurement in conventional nystagmus detection are eliminated, influences of the observed object on eyeball stimulation are eliminated, and detection results are more accurate. The size of the detecting device is greatly reduced, and the detecting device is convenient to carry and move.

Description

Technical field [0001] The invention relates to a method and a device for detecting a full nystagmus image in a compensatory manner to eliminate aberration position errors, in particular to a method and a device for compensating head micro-motion interference measurement results. Background technique [0002] With the development of science and technology, people's habits of using eyes have changed, and eye diseases are on the rise. Nystagmus (nystagmus for short) is a common clinical symptom in neurology and ophthalmology. It is divided into horizontal nystagmus and vertical nystagmus according to sports performance Nystagmus and rotational nystagmus are divided into heel nystagmus, vestibular nystagmus, central nystagmus, and congenital idiopathic nystagmus according to the etiology. The tremor manifestations of different etiologies are partially similar, which is easy to cause misdiagnosis, so it is accurate A complete picture of nystagmus is particularly important for co...

AI Technical Summary

Problems solved by technology

At present, there are two methods for nystagmus detection: one is the potential detection method, which detects the potential difference between the cornea and the retina, and indirectly measures the nystagmus situation. The potential difference obtained by this method is very small, and weather changes, skin conditions Common factors such as common factors will greatly interfere with the results; another method is the video image detection method, which overcomes the above shortcomings and directly detects eye movement, but this method still has the following shortcomings: First, the amplitude of eye movement itself is very small , the slight movement of the head and body will cause large errors in the measurement results. Currently, there is a goggle-type or head-mounted nystagmus detection device that measures the displacement of the eyeball relative to the skull, but this method still does not take the head into consideration. Relative to the influence of the movement of the observed object on the eye movement, this large error has not been eliminated, and this error is particularly likely to cause doctors to make wrong judgments on the division of the severity of peripheral spontaneous nystagmus diseases; the second is the current eye The video detection data of nystagmus is the state data of the eyeball at several time points, rather than the continuous eyeball movement track in a period of time, which cannot fully describe the disease; third, the observed object in the current nystagmus detection equipment is composed of light-emitting diodes. For dot matrix screens, the flickering of bright spots is very irritating to the eyeballs, which will cause the eyeballs to shrink and affect the measurement results; Fourth, the current nystagmus view equipment is relatively large in size, requiring high installation and fixing requirements, and is not easy to move and carry

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