Flip Nystagmograph

Abstract

The invention discloses a rotary type electronystagmography instrument. The instrument comprises an eyecup host part and an eyecup bracket part. The eyecup host part comprises an eyecup frame, a camera and a light source. The light source is used to light an eyeball region, and the camera is used to take images of electronystagmography. The camera and light source, which are arranged in one side--camera and recorder side--of the eyecup frame, are used to take images of electronystagmography for a single eye. The eyecup host part and the eyecup bracket part are capable with detachably disposing, and the eyecup host part can be adjusted horizontally on the eyecup bracket part. The beneficial effects from the technical scheme of the instrument are: achieving binocular video recording in a single camera system, ensuring quality of the electronystagmography video by less relative movement between patient's head and the portable eyecup host part during the test, reducing side effects such as headaches for a patient in a more comfortable examination.

Description

technical field [0001] The invention relates to a flip-type nystagmograph, which belongs to the technical field of image acquisition for short-distance testing of eyeball movement information. Background technique [0002] Nystagmus, referred to as nystagmus, is an involuntary rhythmic movement of the eyeball. Peripheral and central lesions of the vestibular system and certain eye diseases can cause nystagmus. Nystagmus view inspection collects eye movement video by infrared camera, can carry out quantitative analysis on nystagmus, mainly reflects whether the function of vestibular peripheral system and vestibular eye movement pathway is intact, and locates the lesion. There are four main methods for observing nystagmus: unaided eye inspection, Frenzel glasses inspection, electronystagmography (ENG) and view nystagmus (VNG). Among them, VNG can record and play back nystagmus videos with high resolution, and can conduct quantitative analysis on the vertical and horizontal m...

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in this technical solution: first, due to the use of two camera devices, the entire eye mask is usually heavy and easy to slide down, especially in many nystagmus tests, the patient needs to wear the device to make various actions, so the patient will Feel heavy and uncomfortable, and even cause headaches; in addition, the heavy equipment will easily cause relative movement between the patient's head and the eye mask worn, which will affect the accuracy of nystagmus video collection; secondly, such products require a specific head position In the experiment, it is impossible to monitor the head position in real time and ensure the accuracy of the head position; finally, the electrical junction box is relatively heavy and needs to be connected to a 220V AC power supply, which is not conducive to portable use

In summary, there is currently no good design for a lightweight and highly integrated nystagmus viewer

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