Portable Device for Children's Vision Screening

Abstract

The invention relates to a portable device for generally surveying the eyesight of children. The device includes a display module for visualized operation and display of detection results, an image analyzing and processing module for analyzing and processing the obtained detection image and including a prime lens and an image sensor, an image obtaining module for system imaging and a light source module for providing a detection light source and a fixation light source for eyes of the child to be detected, which are sequentially installed in the same optical axis from left to right, wherein the light source module is composed of a light source main board and a light barrier which are coaxially assembled. According to the portable device for generally surveying the eyesight of the children, the light source module adopts a direct shooting manner, thus being simple in structure and easy to implement, and preventing the detection accuracy from descending by stray light; meanwhile the light source module adopts the manner of combining infrared light with visible light, the visible light is used for attracting the attention of the child to be detected, and the infrared light is used for detecting the eyesight; the portable device is designed aiming at the children with low cooperation capability or mentally deficient persons, and detection errors are reduced.

Description

technical field [0001] The invention belongs to the technical field of ophthalmic medical equipment, and relates to a portable device for visual inspection of children. Background technique [0002] Eyes are the most important sensory organs of the human body, and more than 80% of the external information that people receive is obtained through the eyes. In recent years, the proportion of people with abnormal vision has increased year by year, especially among children, vision problems are becoming more and more common. However, if the early visual developmental disorder cannot be checked and corrected in time, it will cause vision problems that will accompany it for a lifetime, causing physical and spiritual damage to growing children, and may affect future education and employment. Therefore, it is of great significance for every family and the whole society to carry out children's vision screening and timely intervention treatment for patients with early visual impairmen...

AI Technical Summary

Problems solved by technology

Since children under the age of 6 do not have a strong ability to cooperate, it is difficult to cooperate with the operator in a good posture and fixation level according to the detection requirements of the device. In this case, there will be a large error in the detection

Therefore, this device is not suitable for testing the visual ability of people with poor coordination ability such as children or people with mental disabilities.

[0007] The present invention aims to develop a visual ability detection device with simple structure, low system cost and suitable for subjects with poor cooperation ability

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