Double-blind design of electronic vision testing system

Abstract

An electronic eyesight examination system adopting double-blind design. The system is characterized by comprising hardware and software. The hardware mainly comprises a blindfold plate (1), an infrared ray transmitter (2), an infrared ray receiver (3), a handheld controller (4), a processor (5), a bar code reader (6) and a sighting mark display (7). The software installed in the processor (5) mainly comprises an identity recognition module (15), a sighting mark display module (16), a sighting mark progressive module (17), a dynamic distance measuring module (18), an eyesight conversion module (19) and a storage module (20). The examination system displays sighting marks of different sizes by means of the sighting mark display (7), an examinee can freely select the distinguishing time and the elimination distance within a certain range without the participation of a doctor, and the examinee does not know the specific eyesight value represented by an eyesight row for current elimination in the elimination process, so that information bias caused by an examiner and the examinee is eliminated. The examination system adopts the principle of double-blind design, so sighting mark selection / eyesight examination can be carried out freely, and therefore the real eyesight of the examinee can be more accurately reflected.

Description

technical field [0001] The patent of the present invention relates to a vision detection device for human eyes, specifically an electronic vision detection system with a double-blind design. Background technique [0002] Vision examination is a basic examination that must be completed by every patient who visits the ophthalmology department. Vision results directly affect the doctor's diagnostic thinking, prescribing auxiliary examinations, correct diagnosis and treatment measures. Therefore, ensuring the accuracy of vision examination is the key to diagnosis and treatment. The most basic and important link of eye diseases. [0003] At present, the visual inspection mode is unified as follows: the subject faces an eye chart at a certain distance, and the doctor points to a certain visual mark (usually the word "E"), and asks the subject to identify the opening direction of the word "E" until the subject can identify it. Physicians record the corresponding visual acuity for ...

AI Technical Summary

Problems solved by technology

For example, compare a new drug with a traditional drug intravitreal injection in the treatment of age-related macular degeneration, and observe the effect of the two groups on improving vision. The doctors in the experimental group will be very patient in checking their vision, which may overestimate their vision and affect the drug treatment. Effect evaluation

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