Visual functional detection system and method based on smart phone

Abstract

The invention provides a visual functional detection system and method based on a smart phone. The system comprises a sighting mark display unit, a voice unit, an analysis and judgment unit, a real-time calculation unit, a sighting mark conversion unit, a real-time distance monitoring unit, a result display unit and a comprehensive analysis unit. The method includes the steps of utilizing mobile software to control visual functional detection, analysis, judgment and other procedures, utilizing a front-facing camera of the phone to real-timely monitor the testing distance between users' eyes and the sighting mark at the same time, and calculating a visual value corresponding to the presently displayed sighting mark according to the distance obtained from monitoring. The visual functional detection system and method based on the smart phone have the advantages of providing a fast and reasonable method for sighting mark conversion and definition judgment, achieving visual functional detection in any testing distance and real-time mobile detection of visual functions without an influence on precision of the detection, reducing system requirements for detection environment, effectively accelerating detection, enhancing randomness of occurrence of the sighting mark, and having a significant meaning for visual protection and prevention of visual diseases.

Description

technical field [0001] The invention belongs to the technical field of visual function detection, and in particular relates to a visual function detection system and method based on a smart phone. Background technique [0002] Eye health plays a vital role in human health. In recent years, the problem of eye visual function has become increasingly prominent. The traditional visual function detection system has been difficult to meet the increasingly diverse needs of people due to constraints such as large space occupation, fixed visual standard and complex operation. , and smart phones have become popular due to their small size, portability, simple operation, and low price, providing a new direction for the development of visual function detection. [0003] At present, the existing visual function detection system based on smart phones mainly detects vision indicators, uses LCD screens to display various visual targets, controls the process of visual target display, transfo...

AI Technical Summary

Problems solved by technology

[0002] Eye health plays a vital role in human health. In recent years, the problem of eye visual function has become increasingly prominent. The traditional visual function detection system has been difficult to meet the increasingly diverse needs of people due to constraints such as large space occupation, fixed visual standard and complex operation. , and smart phones have been popularized due to the advantages of compactness, portability, simple operation, and low price, providing a new direction for the development of visual function detection.

[0003] At present, the existing visual function detection system based on smart phones mainly detects vision indicators, uses LCD screens to display various visual targets, controls the process of visual target display, transformation, analysis and result calculation through software, and uses Bluetooth and other wireless communication technologies to realize data transmission, which solves the problems of poor flexibility of traditional visual function detection methods and easy memory of visual targets.

[0004] However, most of the existing visual function detection systems use a fixed test distance, and the test distance is 5m when performing distance vision testing, which has relatively large requirements for the detection environment space and poor adaptability; and the determination of the test distance is mainly carried out before the test. Manual measurement, the result error is large and the tester will inevitably move the body during the detection process, resulting in changes in the test distance, and some use additional infrared, laser and other external distance measuring equipment for distance measurement, but it increases the cost and operation. the complexity

In terms of visual target transformation, the existing detection methods all use the method of sequentially transforming the visual target from large to small, which is difficult to quickly obtain the results of the tester's visual acuity

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