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EYE TEST METHOD USING RED AND GREEN MARKS AND RED/GREEN TESTER USED IN THE EYE TEST METHOD
EYE TEST METHOD USING RED AND GREEN MARKS AND RED/GREEN TESTER USED IN THE EYE TEST METHOD
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机译:使用红色和绿色标记的眼睛测试方法以及在眼睛测试方法中使用的红色/绿色测试仪
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摘要
A red/green tester judging whether a glass lens or a contact lens is correct or not, or suitable or too strong, has a case (1). The inside of the case (1) is divided into left and right divisions by a partition plate (2). A red test lamp (3R) and a green test lamp (3G) are provided on the left and right sides of the partition plate (2), respectively. A red film (5) and a green film (6) are provided on the front of the case (1) on the left and right sides of the partition plate (2) respectively through an opal screen (4). Black fixed marks (8 and 9) which have identical patterns and sizes are provided in the positions corresponding to the lamps (3R and 3G) on the fronts of both films (5 and 6). A switching circuit which, after operating or flashing the lamp (3G) for a certain time, operates the lamp (3G) and the lamp 3R simultaneously is provided. Thus, the red/green mark test can be carried out while the adjustment of the crystalline lens which is performed by the subject unconsciously can be avoided as much as possible.
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