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Far-sighted composite out-of-focus lens

A compound defocus lens technology, applied in the field of compound defocus lenses for distance viewing, can solve the problems of not being able to control the development of myopia, not reducing the hyperopic defocus of the side center, etc., and achieve the effects of wide application range, myopia prevention and obvious effect

Inactive Publication Date: 2014-07-23
张家炳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the spectacle lenses in the world are all designed with the same degree of lens, which has no effect on reducing the defocus of paracentric hyperopia, and theoretically cannot control the development of myopia.

Method used

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  • Far-sighted composite out-of-focus lens
  • Far-sighted composite out-of-focus lens
  • Far-sighted composite out-of-focus lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1. The user is emmetropic and the interpupillary distance is 60mm. When staring at the 50cm visual mark in front of the eye, the diopter of the central part of the lens is theoretically +2.00DS, and the surrounding ring-shaped lens increases with an arithmetic difference of +0.25D 6 times, the diopters of lenses 2, 3, 4, 5, 6, and 7 are respectively +2.25D, +2.50D, +2.75D, +3.00D, +3.25D, +3.50D, and the outermost ring-shaped lens The diopter difference from the central part is 1.50D, and the compound prism with 6 prisms base inwards can simultaneously achieve the purpose of completely relaxing adjustment and gathering, reducing paracentral hyperopic defocus, and preventing myopia.

Embodiment 2

[0027] Embodiment 2. The user's eyes are 1.50D myopia. When staring at the target of 100cm in front of him, in order to prevent and control the development speed of myopia, the theoretical diopter of the central part of the out-of-focus lens is -0.50DS, and the surrounding ring-shaped lens is + The arithmetic difference of 0.25D is increased by 6 times, and the diopters of ring-shaped lenses 2, 3, 4, 5, 6, and 7 are respectively -0.25D, 0D, 0.25D, +0.50D, 0.75D, and 1.00D. The diopter difference between the ring-shaped lens and the central part is 1.50D, and the diopter power and base orientation of the added prism should be determined according to the actual gathering ability of the user's eyes and other parameters.

[0028] Specific pre-dispensing detection methods and procedures and spectacle parameters are omitted here.

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Abstract

The invention discloses a far-sighted composite out-of-focus lens. The far-sighted composite out-of-focus lens is formed by combining a triple prism with an out-of-focus lens body which is formed by combining a plurality of lenses with unequal radiuses or dioptre in the shape of concentric circles, the dioptre of the combined lenses is gradually increased from inside to outside and the lenses with the same dioptre are annularly distributed, and the far-sighted composite out-of-focus lens can also be combined with a cylinder lens. The far-sighted composite out-of-focus lens meets the glancing habit of human eyes, covers the central visual view, has enough peripheral definition, realizes the relative uniformity between form-deprivation reduction and paracentral out-of-focus degree reduction, relaxes the proximal regulation and convergence of human eyes, weakens image jumping interference, can prevent teenagers with normal vision from myopia during short sight, is suitable for restorative treatment on teenagers with ametropia already and control on the degree deepening, is theoretically applicable to the dioptric condition of any human eyes, and has a wide application range and obvious effects.

Description

technical field [0001] The compound defocusing lens for far-sightedness of the invention relates to the field of preventing and controlling the occurrence and development of myopia and hyperopia. Background technique [0002] "At 08:06 on February 04, 2010, People's Daily Online reported with a striking headline, "The number of nearsighted people in my country is nearly 400 million, and there are more and more 'small glasses'! A few days ago, according to a cooperation between China, the United States, and Australia The survey on the prevention and treatment of myopia in children shows that the number of myopia in my country is nearly 400 million, ranking first in the world. The number of myopia has been increasing year after year, and it has become an important issue affecting the health of our people. "——In many ophthalmology academic conferences, experts have called myopia a "national disease"! [0003] Each of our students has learned from kindergarten that "writing pos...

Claims

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Application Information

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IPC IPC(8): G02C7/06G02C7/14
Inventor 张家炳
Owner 张家炳
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