CN2816843Y

CN2816843Y - Myopia-proof eyeglass

Info

Publication number: CN2816843Y
Application number: CN 200520103913
Authority: CN
Inventors: 李玉山
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-17
Filing date: 2005-08-17
Publication date: 2006-09-13
Anticipated expiration: 2015-08-17

Abstract

The utility model provides a pair of nearsightedness preventing and curing glasses, which comprises two eyeglasses respectively arranged in an eyeglass rack, wherein each eyeglasses is an eyeglass of a convex lens with a deflective optical centre and low degree. The nearsightedness preventing and curing glasses of the utility model utilizes the convex lenses of low degree and adopts the shifting of the optical centre to generate the prism effect, and the utility model helps the regulation of eyes, reduces the aggregation of the eyes and performs the functions of relieving eye strain and preventing and curing nearsightedness.

Description

Myopia preventing and treating glasses

Technical field

The utility model relates to a kind of glasses, relates in particular to a kind of glasses of preventing and treating myopia.

Background technology

The modern medicine technology utilizes concavees lens to correct the myopia of human eye.Eyes are when seeing the infinite distance, and crystalline lens must return to flat, as shown in Figure 1.Eyes are seeing when near that biconvex is amplified image before and after the crystalline lens, can see object nearby clearly, as shown in Figure 2.Because long-time too much mistake closely uses eye, eyes still are in the refractive status of seeing when near when far away seeing, crystalline lens should recover flat, but still is in the biconvex state, so do not see a distant place; Place concavees lens in eyes the place ahead, lenticular biconvex part is comprehensively fallen, make eye recover to see needed refractive status far away, as shown in Figure 3.Here it is concavees lens can myopia correction, improve the principle of eyesight.And above-mentioned concavees lens can only help the people of myopia to see distant objects clearly, and myopia prevention in advance.

Phenomenon at the juvenile hypometropia of Chinese ， Celadon is increasing year by year at present, and this causes medical experts' attention.Looking the light expert feels to strip off by animal shape and experimental results show that: the diopter of intervention animal eyes that can be artificial.Brainstrust is being explored the whole bag of tricks adolescent myopia is being done the intervention prevention, reduces the near-sighted incidence of disease, the control myopia progression." myopia subtracts it " of rising in 2003, " myopia returns mirror " etc., take the design of the additional lower degree convex lens of inside, the most advanced and sophisticated outside prism of substrate, but because its prism degree is a 5-10 prism, eyes are produced close the picture difficulty, thereby must make eyes strengthen set, could form eyes and look, so prevention effect is unsatisfactory.

Summary of the invention

The purpose of this utility model provides a kind of myopia preventing and treating glasses.It utilizes low number of degrees convex lens, adopts the photocentre displacement, makes it produce prism effect, helps eyes to regulate, and reduces the set of eyes, plays the effect that slows down eye fatigue, control myopia.

The purpose of this utility model is to realize by following technical solution.Design a kind of myopia preventing and treating glasses, two eyeglasses are positioned over respectively in the mirror holder, and described eyeglass is the convex lens sheet of the number of degrees polarisation heart, low.

In the such scheme, the photocentre of described two eyeglasses moves inward respectively with respect to the eyes interpupillary distance or outwards moves.

In the such scheme, the convex lens number of degrees of described eyeglass are+1.25～+ 1.75D, in the photocentre amount of moving one-sided be 15～20mm.

In the such scheme, the convex lens number of degrees of described eyeglass are+0.75～+ 1.00D, the photocentre external shift quantity is one-sided to be 20～25mm.

Myopia preventing and treating glasses of the present utility model has the following advantages:

1, the prism parameters that produced of the optical centre bias amount of these glasses will be regulated normal position of spherical lens with influence and is complementary, thereby can overcorrection, and the student can play therapeutic action unawares in wearing process.

2, after these glasses are worn and used, can not produce metamorphopsia and iridization phenomenon, have characteristics such as beautiful and comfortable, that adaptation is fast, in light weight, the teenager is acceptant.

3, these glasses use common monochromatic light convex lens, utilize the polarisation heart to dispose when mirror holder is installed and get final product, and cost is low, and is inexpensive, easily penetration and promotion in vast adolescent student.

Description of drawings

Figure 1 shows that the people watches lenticular synoptic diagram when far away;

Figure 2 shows that the people watches lenticular synoptic diagram when near;

Fig. 3 is a lenticular synoptic diagram when wearing concavees lens;

Fig. 4 is the synoptic diagram of a kind of embodiment of myopia preventing and treating glasses;

Fig. 5 is the synoptic diagram of the another kind of embodiment of myopia preventing and treating glasses;

Fig. 6 is the synoptic diagram that eye wear glasses shown in Figure 4 are seen near objects;

Fig. 7 is the synoptic diagram that eye wear glasses shown in Figure 5 are seen near objects.

Wherein: expression interpupillary distance center, ⊙ lens optical center.

Embodiment

Myopia preventing and treating glasses of the present utility model utilizes low number of degrees convex lens, adopts the photocentre displacement, makes it produce prism effect, helps eyes to regulate, and reduces the set of eyes, plays the effect that slows down eye fatigue, control myopia.

It is strong excessively that pseudo-myopia is easy to generate binocular integration, and true myopia is easy to generate the binocular integration deficiency, if gathered strong, photocentre should in move; If convergence insufficiency, photocentre should move outward, particularly the myopia major part all has outer tiltedly latent, the convex lens photocentre moves outward and will produce the outside and most advanced and sophisticated inside prism of a substrate, can produce in the image like this move, physical phenomenon that light moves outward, for recovering outer oblique eye position and recovering normal set good effect is arranged.As for the amount of photocentre displacement, it is big more that photocentre departs from interpupillary distance, and the prism of generation is big more, presses the inclined to one side 1mm of 10.00D lens and produce a prism calculating, and the convex lens polarisation heart displacement 20mm of+1.50D can produce 3 △ (3 prisms).

The prevention type: photocentre moves in wanting, emmetropia that suitable set is strong excessively and low myopia eye, and near-sighted degree be no more than-the pseudo-myopia patient of 1.00D wears.With reference to Fig. 5, the convex lens number of degrees that are positioned over eyeglass 2 in the mirror holder 1 are+1.25～+ 1.75D, in the photocentre amount of moving one-sided be 15～20mm, will produce a substrate inwardly and most advanced and sophisticated outside prism.The convex lens number of degrees of eyeglass can preferred+1.50D, and the one-sided preferably 15mm of the amount of moving in the photocentre produces prism 2.25 △.Prism is big can metamorphopsia.With reference to Fig. 7, after intracardiac the moving, image moves outward in the lens optical, postpones and closes picture, and it is far away that near point of convergence becomes.

Therapeutic type: photocentre will move outward, and patient that suitable set is incomplete and myopia are worn to the A nearsighted person the-3.00D from-1.00D.With reference to Fig. 4, the convex lens number of degrees that are positioned over eyeglass 2 in the mirror holder 1 are+0.75～+ 1.00D, the photocentre external shift quantity is one-sided to be 20～25mm, will produce a substrate outwards and most advanced and sophisticated inside prism.The convex lens number of degrees of eyeglass can preferred+1.00D, and the one-sided preferably 20mm of photocentre external shift quantity produces prism 2 △.With reference to Fig. 6, after moving outside the lens optical center, eyes see and close picture when near in advance that eyes are less with set.

Claims

1, a kind of myopia preventing and treating glasses, two eyeglasses are positioned over respectively in the mirror holder, it is characterized in that, and described eyeglass is the convex lens sheet of the number of degrees polarisation heart, low.

2, myopia preventing and treating glasses according to claim 1 is characterized in that, the photocentre of described two eyeglasses moves inward respectively with respect to the eyes interpupillary distance or outwards moves.

3, myopia preventing and treating glasses according to claim 2 is characterized in that, the convex lens number of degrees of described eyeglass are+1.25～+ 1.75D, in the photocentre amount of moving one-sided be 15～20mm.

4, myopia preventing and treating glasses according to claim 2 is characterized in that, the convex lens number of degrees of described eyeglass are+0.75～+ 1.00D, the photocentre external shift quantity is one-sided to be 20～25mm.

5, myopia preventing and treating glasses according to claim 3 is characterized in that, the convex lens number of degrees of described eyeglass are+1.50D, in the photocentre amount of moving one-sided be 15mm.

6, myopia preventing and treating glasses according to claim 4 is characterized in that, the convex lens number of degrees of described eyeglass are+1.00D that the photocentre external shift quantity is one-sided to be 20mm.