Portable device for generally surveying eyesight of children

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 ophthalmological medical equipment, and relates to a portable device for children's vision screening. Background technique [0002] The eye is the most important sensory organ of the human body. About 80% of the external information that people receive is obtained through the eye. In recent years, the proportion of people with abnormal vision has been increasing year by year. Especially in children, the phenomenon of vision problems has become more common. If the early visual function development disorder cannot be checked and corrected in time, it will cause vision problems that accompany life, bring physical and spiritual damage to the growing children, and may affect subsequent studies, employment and other aspects. Therefore, a general examination of children's vision and timely intervention for patients with early visual impairment are of great significance to every family and the whole society. [0003] ...

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

Images