CN2715182Y

CN2715182Y - Myopia prevention glasses for near use having myopia weakening effect

Info

Publication number: CN2715182Y
Application number: CN 200420006974
Authority: CN
Inventors: 娄世平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-12
Filing date: 2004-03-12
Publication date: 2005-08-03
Anticipated expiration: 2014-03-12

Abstract

The utility model discloses myopia prevention glasses for near use having myopia weakening effect, comprising two eyeglasses. The myopia prevention glasses for near use having myopia weakening effect are characterized in that the shape of the horizontal profile at which the focus of the sight line of the eyeglass is positioned is that the inner side of the eyeglass is thicker, the outer side is thiner, and the thickness of the eyeglass is gradually changed in the middle. Namely the optical center of the eyeglass is shifted horizontally to the inner side of the eyeglass on the basis of a common lens. The eyeglass comprises a lens and a triple prism. After a user wears the myopia prevention glasses for near use having myopia weakening effect, eyeballs aren't regulated and aggregation is dispersed when the user sees near things, and seeing near things is turned into overlook, and thereby, the utility model can prevent the eyeballs from being lengthened unceasingly to make myopia degree not deepened, and contrarily, the myopia prevention glasses for near use having myopia weakening effect can lighten the myopia degree. The utility model has the action of weakening myopia.

Description

A kind of have subtract the near of myopia effect with the control spectacles

Technical field

The utility model provides a kind of glasses, especially a kind of have subtract the near of myopia effect with the control spectacles.

Background technology

When normal (object distance is big) soon far away, enter the only directional light of eyeball, just on retina, eyeball need not to regulate image, but enters the only diverging light of eyeball in when read-write (object distance hour), the intraocular image distance increases, amphiblestroid picture is unclear, and this is unclear just to cause reflexive ciliary muscle contraction, and curvature of lens is increased, refracting power strengthens, and the image in the time of will seeing nearly (read-write) also is transferred on the retina and (is died and claim accommodation reflex) and see clearly.So normal eye can be seen and can see far again closely, sees far and need not regulate, seeing closely needs to regulate.But present many people, young student especially see all day long and are closely carrying out accommodation reflex one by one all day long.Therefore, the adjusting maincenter of some people forms focus of excitation because of long-term irriate is excited, and it shows as the lasting contraction of ciliary muscle, sees and does not also loosen when far away, so see far unclearly, sees nearly clear (near-sighted).This myopia is exactly pseudomyopia in general, claims accommodative myopia again.Moreover, regulating (converge like the spokes of a wheel at the hub) will consume energy, so majority are when forming pseudomyopia, eyeball also slowly prolongs backward to save adjusting, to prolong the adjustings that 1mm just can save 340 degree backward, at this moment far reads a book from a chi, just need not regulate and just in time can see clearly, but seen far unclear (myopia), because of eyeball elongated do not increased and can retract again as limbs, so claim true myopia, claim axial myopia again.On the other hand, seeing also needs two inside polymerizations of eyeball when near, claims convergence reflex.Convergence reflex and accommodation reflex must carry out synchronously.Convergence reflex also is to cause one of bathomorphic factor.

The myope mixes the spectacles (lens) of prior art, it is far away clear that it makes that the wearer sees, promptly compensated because the distortion of eyeball and loosen the deficiency of adjusting, but, see and need closely again to regulate that elongated eyeball has been neutralized by glasses seeing when near, make it to become longer seeing to regulate when near, after long again spectacles improper again (too shallow) must deepen glasses, wear the glasses of intensification again after eyeball also to extend, vicious cycle is gone down like this.So general myopia patient may make the myopic degree of glasses develop to some extent having worn behind the spectacles.

Summary of the invention

The purpose of this utility model is to improve deficiency of the prior art, provide a kind of and after having worn these spectacles, not only can improve eyesight, both can see nearly thing clearly, also can see Qingyuan City's thing, can make again simultaneously the eyeball work to be regulated do not made eyeball continue elongated and do not make myopic degree deepen to alleviate on the contrary having of myopic degree to subtract near that myopia acts on the control spectacles.

The purpose of this utility model is achieved in that

The utility model provides has and subtracts the near of myopia effect and comprise two eyeglasses with the control spectacles, being shaped as of the horizontal cross-section at the sight line focus place of this eyeglass: the thicker and thinner thickness in the outside of the thickness of eyeglass inboard, gradient thickness therebetween, be that described eyeglass makes optical centre carry out horizontal displacement on ordinary lens eyeglass basis, move to the eyeglass inboard, described eyeglass comprises lens component and prism part.

The nearly concrete structure with the control spectacles that subtracts the myopia effect that has that the utility model provides is elaborated below in conjunction with the accompanying drawings and embodiments with the principle that subtracts myopia.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

The nearly section structure with the control spectacles that Fig. 1 subtracts the myopia effect for having of providing of the utility model with and subtract near-sighted principle schematic;

Fig. 2 is the perspective view of these spectacles.

Embodiment

As illustrated in fig. 1 and 2, the utility model provides has and subtracts the near of myopia effect and comprise two eyeglasses 11 with preventing and treating spectacles 1, being shaped as of the horizontal cross-section at the sight line focus place of eyeglass 11: the thicker and thinner thickness in the outside 112 of the thickness of eyeglass inboard 111, gradient thickness therebetween, be that described eyeglass makes optical centre carry out horizontal displacement on ordinary lens eyeglass basis, move to the eyeglass inboard, described eyeglass comprises lens component and prism part.

The action principle of these glasses is such, the eyeglass of these glasses be equivalent on original concave lens again in conjunction with on prism, existing lens, compound the inside prism of substrate again on every eyeglass at the moment, prism and lens are one, are compounded on 1 eyeglass.Lens component can be adjusted wearer's myopia, and the effect of prism part just prevents myopia progression.As shown in Figure 1, when seeing thing A far away, pleasing to the eye light is parallel rays, and light is directly need not regulate after two on the retina that images in normal eye just to entering.And when seeing nearly thing B, scioptics and prism change the direction of pleasing to the eye light.Being that 1 light that comes up is oblique nearby when seeing nearly (reading) goes into two, cause two oblique facing to its (set), and this eyeglass, the oblique inside prism of light substrate at a touch of going into two has just become straight to the light of going into two on 1 word, it is pleasing to the eye to make diverging light become directional light, so need not to carry out " set " and " adjusting " again by this glasses reading and writing, just equal to have seen far (Fig. 1).Like this, the people reads in school, and eye goes to have seen far just as getting back to the wilderness, makes the student see that 1 book from heaven equals to have seen 1 day far, and reading everyday equals to see far away everyday.And can accumulate the process of control among learning process, the study frontier defense of student limit is controlled.Therefore just fundamentally got rid of and caused the bathomorphic cause of disease.Wear when these glasses supply the myope reading and writing, equal to have filled and see far, do not allow its number of degrees increase the weight of with treatment pseudomyopia and control true myopia eye.

This myopia reducing eyeglasses has merged the most important theory of causes of myopia---classical " adjusting theory " and up-to-date " repaying theory modern age ".In the practice, we closely caused repaid modern age from continuing to see, ciliary muscle crystalline lens root nervous and adjusting set confusion is started with, rely on " look in the distance in a large number and can treat myopia " this simplest thought, breakthrough designing already is varied to the near-sighted nearly control spectacles of using of subtracting of the motion of really looking in the distance with looking early work, repaid the modern age when guaranteeing to avoid reading and effectively solved " set ", the contradiction of " adjusting ", people can see that can reach the optical axis when near scatters, the state of looking in the distance that adjustment is loosened fully, effectively stopping myopia takes place, the root of development, and can further impel ciliary muscle, crystalline lens, axis oculi etc. produce the useful integration of reciprocal adjusting and dioptric system, thereby the increase distant vision progressively reduces near-sighted diopter.

These glasses have specific lens vertex lens power, prism degree by the optical centre of the eyeglass that prism+combination of lenses gets up.

Becoming the glasses prism orientation is that substrate is inside, the prism degree value is determined from, interpupillary distance value, the latent oblique degree of close eye eyes with eye distance according near, the vertex lens power value of optical centre is two and is remedied to respectively under the emmetropic dioptric optical value and adds+2.00D-+3.00D, acceptantly determines to try on.

Claims

1, a kind of have subtract the near of myopia effect with the control spectacles, comprise two eyeglasses, it is characterized in that: being shaped as of the horizontal cross-section at the sight line focus place of this eyeglass: the thicker and thinner thickness in the outside of the thickness of eyeglass inboard, gradient thickness therebetween, be that described eyeglass makes optical centre carry out horizontal displacement on ordinary lens eyeglass basis, move to the eyeglass inboard, described eyeglass comprises convex lens part and prism part.

2, according to claim 1 have subtract the near of myopia effect with the control spectacles, it is characterized in that: prism orientation is that substrate is inside.

3, according to claim 1 have subtract the near of myopia effect with the control spectacles, it is characterized in that: the vertex lens power value of the optical centre of described eyeglass is two and is remedied to respectively under the emmetropic dioptric optical value and adds+2.00D-+3.00D.