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Instrument for detecting distant vision and training eye muscles

A vision detection and training instrument technology, used in eye testing equipment, eye exercisers, medical science, etc., can solve problems such as standards that are not internationally recognized, people's use habits deviate from them, and they are not suitable for popular use, and reduce labor. Affordable, easy to promote, simple structure effect

Active Publication Date: 2011-08-17
蒋泉涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to avoid the above disadvantages, international high-end medical institutions mostly use LCD screens or projection vision testers to display a single visual target, but the price is expensive, and it deviates from people's usage habits. The standards have not been recognized internationally and are not suitable for popular use.

Method used

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  • Instrument for detecting distant vision and training eye muscles
  • Instrument for detecting distant vision and training eye muscles
  • Instrument for detecting distant vision and training eye muscles

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0031] The present invention includes a housing, in which at least one disk-shaped turntable 9 is installed, and a circle of numerical values ​​and a circle of sights are respectively arranged on the front of the turntable 9 . The numerical value of the visual mark is the same as the quantity of the visual mark and corresponds to each other. Further, the numerical value of the visual mark is in one-to-one correspondence with the visual mark, and the angled way is: the connection line between the central point of any visual mark value and the center point of the front face of the visual mark turntable 9, and the visual mark The line connecting the central point of the visual mark corresponding to the numerical value and the central point of the visual mark turntable 9 fronts forms a fixed angle β. That is to say, the included angle formed by each pair of c...

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Abstract

The invention provides an instrument for detecting distant vision and training eye muscles. At least one disc-shaped sighting target turntable (9) is arranged in a shell; a circle of sighting target values and a circle of sighting targets are arranged on the front of the sighting target turntable (9) respectively; the sighting target values correspond to the sighting targets one to one; and a sighting target value display window (8) for displaying a single sighting target value on the sighting target turntable (9) and a sighting target display window (10) for displaying a single sighting target on the sighting target turntable (9) are formed on a front panel. As one sighting target is displayed every time and the regularity of the displayed sighting targets cannot be forecast, a detected person cannot determine the direction of the sighting target by memory or regularity; therefore, the accuracy of a detection result is guaranteed.

Description

technical field [0001] The invention relates to an improved visual acuity testing instrument, which also has the function of guiding eye muscle training. Background technique [0002] At present, the commonly used eye charts in my country mainly include international standard eye charts for distant use, standard logarithmic eye charts, and Lando circular optotype eye charts. The international standard distance vision chart uses letters similar to E as the visual targets, and the visual targets are arranged in 12 rows. The corresponding visual target values ​​are recorded in Arabic numerals 0.1 to 1.5. The standard logarithmic vision chart, also known as the 5-point logarithmic vision chart, divides vision into 5 grades, and the visual mark is an "E" shape or a circular letter similar to "C" (that is, the Lando circular visual mark), with a total of 14 lines. Those who can recognize the 11th line are regarded as standard eyesight, recorded as 5.0. The notch on the sight mar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/032A61H5/00
Inventor 蒋泉涛
Owner 蒋泉涛
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