Supervision instrument for student myopia
A monitor and myopia technology, applied in the field of vision charts, can solve problems such as inability to memorize new vision charts
Inactive Publication Date: 2015-07-22
高得人
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Problems solved by technology
Therefore, some parents need to grasp the myopia situation of their children in a timely and accurate manner, and are in urgent need of a new type of eye chart that is simple and practical, and cannot memorize and recite the direction of the notch of the visual mark.
[0004] A new type of eye chart that is simple and practical, and cannot memorize and recite the direction of the notch of the visual mark, is not yet available on the market.
Method used
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[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0015] Such as figure 1 , figure 2 , image 3 As shown, the position corresponding to the box body (1) and the rear cover plate (9) is processed with a through hole for moving cooperation with the central shaft (4). The upper part of the box body (1) is manufactured with an arc-shaped hole (2) smaller than the radius of the standard type rotatable hard plane light-transmitting target disk (3). The central axis (4) is fixed in the central hole (12) of the standard type rotatable hard plane light-transmitting sight target disk (3). The standard rotatable hard plane light-transmitting sight plate (3) is fitted in the corresponding position in the box body (1) through the central shaft (4). The detachable advertising board (7) is assembled on the bottom of the box body (1). The handle (5) is tightly fitted on the central shaft (4). Central shaft (4...
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The invention relates to a supervision instrument for student myopia. The supervision instrument for student myopia is mainly composed of all kinds of box bodied, all kinds of rotatable hard plane transmitting sighting marl disks, a micromotor, a center shaft, a handle, a tube, a power switch, a power line, a back cover plate and all kinds of support assemblies. The supervision instrument for student myopia is characterized in that all kinds of sighting marks with different standards are printed on the all kinds of rotatable hard plane transmitting sighting marl disks, the all kinds of rotatable hard plane transmitting sighting marl disks are installed in the all kinds of box bodies or the all kinds of support assemblies in a movable mode, or the all kinds of rotatable hard plane transmitting sighting marl disks are nailed to walls or any other objects through nails or bolts in a movable fit mode. Rotating the all kinds of rotatable hard plane transmitting sighting marl disks, and notches of all kinds of sighting marks with a same standard faces the up, down, left and right directions, so that a person with eyesight to be tested cannot memory and recite. The supervision instrument for student myopia is suitable for timely and accurate control on the development state of myopia of child by parents.
Description
technical field [0001] The invention relates to an eye chart for detecting eyesight, in particular to a home-use student myopia monitoring instrument which can rotate the orientation of the visual mark. Background technique [0002] For a long time, most medical units or families in the society have used traditional eye charts to test vision. Since the E-shaped visual standard on the traditional eye chart is fixed, this fixed visual standard is more suitable for one-time visual acuity test, but it is not suitable for the same person to test the visual acuity multiple times for a long time. For example, some parents stipulate that their children have low vision. When it is 1.0 or 0.8, children are required to watch less TV, play less computer games, and protect their eyesight. For fun, some children can easily compile the fixed visual mark gaps into formulas, such as: 1 up, 2 down, 3 left, 4 right, etc., and recite them to deceive parents. Therefore, parents cannot accurate...
Claims
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IPC IPC(8): A61B3/032
Inventor 高得人
Owner 高得人