CN2914127Y

CN2914127Y - Contact lens for correcting eyesight

Info

Publication number: CN2914127Y
Application number: CN 200620074568
Authority: CN
Inventors: 陶悦群
Original assignee: 陶悦群
Current assignee: AUTEK CHINA INC.
Priority date: 2006-06-28
Filing date: 2006-06-28
Publication date: 2007-06-20
Anticipated expiration: 2016-06-28

Abstract

The utility model relates to a pair of contact lenses for correcting eyesight, comprising two contact lenses, which are composed of a base arc, a reverse arc, a position arc and a round arc. Within the circular range near the position arc and the cornea, the space between the inner surface of the base arc, the reverse arc and the position arc and the outer surface of the cornea forms a tear cavity. Because both ends of the tear cavity can communicate with the outside, tear can flow in the space between the contact lens and the cornea, which will cause forces of pressing and drawing to compact the central cells of the cornea thinner, the surface curvature flatter, the total eye axis shorter, the refractive power smaller and myopia degree lower or even to disappear, in order to fulfill effect of correcting eyesight.

Description

A kind of contact lenses that are used to rescue eyesight

Technical field

The utility model relates to a kind of contact lenses, is specifically related to a kind of contact lenses of rescuing eyesight.

Background technology

At present, world myopia crowd's quantity enlarges gradually, and near-sighted crowd mainly solves the puzzlement that myopia is brought by wearing spectacles, because glasses have certain weight, and influence is attractive in appearance when wearing, so the appearance of contact lenses has been arranged again.But, all can't play the function of rescuing eyesight no matter be in the market glasses or contact lenses.The way of rescuing eyesight at present mainly is rescuing of operation property, but operation correcting method curer has three conditions: 1, adult.2, myopia has stopped developing more than 2 years.3, be engaged in non-strong physical worker and worker under the High Voltage environment not.Therefore having limited main near-sighted crowd one population of adolescent is treated surgically.Need the cutting tip cornea tissue during operative treatment, corneal has wound, and operative treatment is irreversible.

The utility model content

The utility model has been designed and developed out the contact lenses that suitable various crowds can rescue eyesight easily at the deficiencies in the prior art.

The utility model is achieved through the following technical solutions:

A kind of contact lenses that are used to rescue eyesight include contact lens, are made up of basic arc, counter-rotating arc, location arc and all arcs on the described contact lens; Form the tear-storing chamber that two ends communicate with the external world between contact lens and the cornea.

A kind of contact lenses that are used to rescue eyesight, its basic arc is positioned at the central authorities of contact lens, and the basic arc outside is connected with the counter-rotating arc, and the counter-rotating arc outside is connected with the location arc, and the arc outside, location is connected with all arcs.

A kind of contact lenses that are used to rescue eyesight, its basic arc is more flat than cornea corresponding with it center radian, the counter-rotating arc is steeper than cornea radian corresponding with it, and the location arc is consistent with cornea radian corresponding with it, and all arcs are for the extension of location arc and to the opposite direction perk of cornea.

A kind of contact lenses that are used to rescue eyesight, location arc and cornea are in the circumference range at approaching place, basic arc, counter-rotating arc and locate the inside surface of arc and the outside surface of cornea is formed tear-storing chamber jointly.

A kind of contact lenses that are used to rescue eyesight, the inside surface of described basic arc, counter-rotating arc, location arc and all arcs all do not fit with the outside surface of cornea; The spacing of counter-rotating arc inside surface and cornea outside surface is greater than the spacing of basic arc inside surface and cornea outside surface; The spacing of counter-rotating arc inside surface and cornea outside surface is greater than the spacing of location arc inside surface and cornea outside surface.

The utility model can be rescued in the inside surface of eyesight contact lenses and the tear-storing chamber between the cornea and be filled by the tear layer, because the two ends of tear-storing chamber communicate with the external world, tears can flow between contact lens and cornea.The radian of base arc, counter-rotating arc, location arc and all arcs different, make tear layer skewness, it is inhomogeneous that this tear layer distributes, because more basic arc of counter-rotating arc and location arc are steep, make that the tear layer in the counter-rotating arc is thicker, according to the fluid mechanics effect, tear will flow to the thin place of tear layer, flowing of this tear will apply downward pressure to the central area of cornea, and the cornea tissue to the counter-rotating arc can produce an outer strength of drawing simultaneously.The acting in conjunction that this pressure one is drawn makes the cornea central cell compress attenuation, and surface curvature flattens, and total axis oculi shortens, and the refractive power of cornea reduces, and the near-sighted number of degrees reduce, even disappear.It is extensive, easy to use that the utility model is suitable for the crowd, and eyes are not had any harm.Moulding for cornea is reversible.

Description of drawings

Fig. 1 is a structural representation.

Fig. 2 is the A-A cut-open view.

Embodiment

Shown in accompanying

drawing

1,2.

This uses on the novel contact lens is made up of basic arc 1, counter-rotating arc 2, location arc 3 and all arcs 4; Base arc 1 is positioned at the central authorities of contact lens, and basic arc 1 outside is connected with counter-rotating arc 2, and counter-rotating arc 2 outsides are connected with location arc 3, and arc 3 outsides, location are connected with all arcs 4.Base arc 1 is more flat than cornea 5 center radians corresponding with it, and counter-rotating arc 2 is steep than cornea 5 radians corresponding with it, and location arc 3 is consistent with cornea 5 radians corresponding with it, and all arcs 4 are to locate the extension of arc 3 and to the opposite direction perk of cornea 5.In the circumference range at approaching place, basic arc 1, counter-rotating arc 2 and the inside surface of location arc 3 and the outside surface of cornea 5 are formed tear-storing chamber jointly for location arc 3 and cornea 5.The inside surface of base arc 1, counter-rotating arc 2, location arc 3 and all arcs 4 does not all fit with the outside surface of cornea 5; The spacing of counter-rotating arc 2 inside surfaces and cornea 5 outside surfaces is greater than the spacing of basic arc 1 inside surface and cornea 5 outside surfaces; The spacing of counter-rotating arc 2 inside surfaces and cornea 5 outside surfaces is greater than the spacing of location arc 3 inside surfaces and cornea 5 outside surfaces.

The utility model can be rescued in the inside surface of eyesight contact lenses and the tear-storing chamber between the cornea 5 and be filled by the tear layer, because the two ends of tear-storing chamber communicate with the external world, tears can flow between contact lens and cornea 5.The radian of base arc 1, counter-rotating arc 2, location arc 3 and all arcs 4 different, make tear layer skewness, it is inhomogeneous that this tear layer distributes, because counter-rotating arc 2 more basic arcs 1 and location arc 3 are steep, make that the tear layer in the counter-rotating arc 2 is thicker, according to the fluid mechanics effect, tear will flow to the thin place of tear layer, flowing of this tear will apply downward pressure to the central area of cornea 5, and the cornea tissue to counter-rotating arc 2 can produce an outer strength of drawing simultaneously.The acting in conjunction that this pressure one is drawn makes cornea 5 central cells compress attenuation, and surface curvature flattens, and total axis oculi shortens, and the refractive power of cornea 5 reduces, and the near-sighted number of degrees reduce, even disappear.Thereby reach the effect of rescuing eyesight.

Claims

1, a kind of contact lenses that are used to rescue eyesight include contact lens, it is characterized in that being made up of basic arc, counter-rotating arc, location arc and all arcs on the described contact lens; Form the tear-storing chamber that two ends communicate with the external world between contact lens and the cornea.

2, a kind of contact lenses that are used to rescue eyesight according to claim 1, it is characterized in that described basic arc is positioned at the central authorities of contact lens, the base arc outside is connected with the counter-rotating arc, and the counter-rotating arc outside is connected with the location arc, and the arc outside, location is connected with all arcs.

3, a kind of contact lenses that are used to rescue eyesight according to claim 1 and 2, it is characterized in that basic arc is more flat than cornea corresponding with it center radian, the counter-rotating arc is steeper than cornea radian corresponding with it, the location arc is consistent with cornea radian corresponding with it, and all arcs are for the extension of location arc and to the opposite direction perk of cornea.

4, a kind of contact lenses that are used to rescue eyesight according to claim 1 is characterized in that at location arc and cornea in the circumference range at approaching place, basic arc, counter-rotating arc and locate the inside surface of arc and the outside surface of cornea is formed tear-storing chamber jointly.

5, a kind of contact lenses that are used to rescue eyesight according to claim 1 and 2, the inside surface that it is characterized in that described basic arc, counter-rotating arc, location arc and all arcs all do not fit with the outside surface of cornea; The spacing of counter-rotating arc inside surface and cornea outside surface is greater than the spacing of basic arc inside surface and cornea outside surface; The spacing of counter-rotating arc inside surface and cornea outside surface is greater than the spacing of location arc inside surface and cornea outside surface.