Portable vision tester
A tester and portable technology, applied in the field of vision testing equipment, can solve the problems of inaccurate vision, weak sense of direction, deviation and other problems of vision testers, and achieve accurate test results, easy to carry, and reduce stress.
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[0021] The present invention is specifically described below in conjunction with accompanying drawing, as Figure 1-7 As shown, a portable vision tester includes a device body 1, a base 7 is provided at the bottom of the device body 1, and an air intake valve 14 is provided at the left end of the base 7, and the air intake valve 14 is connected with the gas tank 15 in the base 7 through a pipeline. 7. A fixed plate 18 is arranged on the left side of the upper side. The left side of the fixed plate 18 is provided with a decompression ball 16. The decompression ball 16 is arranged on the fixed plate 18 through a fixed rod. Set the gas distribution valve 17, the decompression ball 16 is connected with the gas distribution valve 17 through the pipeline, the lower side of the gas distribution valve 17 is connected with the gas tank 15 through the pipeline, and the silicone layer 31 is arranged on the outside of the decompression ball 16, and the silicone layer 31 is a bionic human b...
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