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US 7,726,812 B2Granted
Device for preventing and treating myopia
AssigneeMinghua Dai
InventorsMinghua Dai, Yaodong Dai
Life of this patent
Estimating the term…
Abstract
A device for preventing and treating myopia includes a base, a spectacles frame (1), a holder (3) and a lens (2). The holder (3) is mounted on the base; a visual target (4) is placed on the base. The spectacles frame (1) is connected to the holder (3) by adjustable connecting parts (31,32,33,34,35), so the distance between the spectacles frame (1) and the visual target (4) which is placed on the base is adjustable.
Claims16
A device for preventing and treating myopia, the device comprising:
- a frame having an object associated therewith,
- a spectacles frame coupled to said frame, and
- two lenses coupled to said spectacles frame, wherein the diopter value (Φ) of said lenses is governed by the equation Φ=1/u+A+B−ΔΦ, wherein “A” the degree of myopia which is negative and reflects the diopter of distance vision correcting, “B” is the degree of focus-out diopter and has a value between 0.1˜3 D, “ΔΦ” is the adjust value, and “u” is the distance between the object and said lenses.
A method for treating required close de-focusing object training myopia using a device, the method comprising the steps of:
- providing the device that includes a frame having an object associated therewith, a spectacles frame coupled to said frame, and two lenses coupled to said spectacles frame, wherein the diopter value (Φ) of said lenses is governed by the equation Φ=1/u+A+B−ΔΦ, wherein “A” the degree of myopia which is negative and reflects the diopter of distance vision correcting, “B” is the degree of focus-out diopter and has a value between 0.1-3 D, “ΔΦ” is the adjust value, and “u” is the distance between the object and said lenses,
- providing the object between said frame and the front of said lenses,
- adjusting the distance between the object and said lenses to “u”;
- and
- adjusting the distance “u” with sound, light, electrical, mechanical or manual mechanism.
2 more elements
Dependencies are inferred from the claim text.