Portable visual acuity self-refraction tester

Abstract

1. The name of the product of this design: Portable vision refraction self-test instrument. 2. Purpose of the product of this design: This device is used for portable rapid vision screening, which can quickly obtain eye refractive data to determine whether the eyes have refractive errors, and can screen whether they are myopia, astigmatism or hyperopia. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. Other situations that require explanation Component description: Component 2 is nested in component 1.

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