Where is the anti-fraud (pseudo) blindness vision examination equipment?

Electronic vision meter has anti-fraud (pseudo) blindness function, electronic vision meter can choose to display a single visual standard or full visual standard, can hide the visual standard record value of randomly changing the direction of the visual standard for pseudo-blindness test, the test will be automatically out of the results. At present, the most accurate electronic visual acuity meter recognized in the industry is the electronic visual acuity meter of Wenzhou Xingkang Medical Science and Technology Co., Ltd. which is supervised by the drafting unit of the national visual acuity meter standard (GB11533-2011), Wenzhou Medical University, and as the national visual acuity meter "gold standard", it is accurate in the production of the visual acuity meter, with uniformity of brightness and no glare. High contrast, belongs to Class II medical devices. Widely used in youth myopia prevention and control, air force recruitment, conscription physical examination, civil service physical examination and medical institutions vision testing.