CN112415779B - A corneal contact lens capable of improving wearing comfort - Google Patents
A corneal contact lens capable of improving wearing comfort Download PDFInfo
- Publication number
- CN112415779B CN112415779B CN202011556665.2A CN202011556665A CN112415779B CN 112415779 B CN112415779 B CN 112415779B CN 202011556665 A CN202011556665 A CN 202011556665A CN 112415779 B CN112415779 B CN 112415779B
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- arc
- rear surface
- contact lens
- arc curved
- front surface
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 29
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims description 5
- 210000005252 bulbus oculi Anatomy 0.000 abstract description 9
- 208000024891 symptom Diseases 0.000 abstract description 6
- 210000004087 cornea Anatomy 0.000 description 12
- 230000007704 transition Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000003556 Dry Eye Syndromes Diseases 0.000 description 1
- 206010013774 Dry eye Diseases 0.000 description 1
- 239000000607 artificial tear Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 239000003889 eye drop Substances 0.000 description 1
- 229940012356 eye drops Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004561 lacrimal apparatus Anatomy 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/049—Contact lenses having special fitting or structural features achieved by special materials or material structures
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
本发明提供一种能提高佩带舒适度的角膜接触镜，包括：本体、本体的前表面和后表面，前表面由中心部分为前表面光学区和前表面中心部分之外的前表面周边区构成，后表面由后表面中心部分的后表面基弧区和后表面中心部分之外的后表面周边区构成；前表面周边区是二至四个依次由内而外环状圆弧曲面构成，后表面周边区是八个依次由内而外环状圆弧曲面构成，前表面末端圆弧曲面与后表面第八圆弧曲面通过连接区连接。本发明提供的角膜接触镜，可以使眼泪在眼球与角膜接触镜之间流动更顺畅，有效缓解长时间佩戴角膜接触镜造成的不适症状，提高佩戴舒适度。
The present invention provides a corneal contact lens capable of improving wearing comfort, comprising: a body, a front surface and a rear surface of the body, wherein the front surface is composed of a front surface optical zone having a central part and a front surface peripheral zone outside the front surface central part, and the rear surface is composed of a rear surface base arc zone in the rear surface central part and a rear surface peripheral zone outside the rear surface central part; the front surface peripheral zone is composed of two to four annular arc surfaces sequentially from inside to outside, and the rear surface peripheral zone is composed of eight annular arc surfaces sequentially from inside to outside, and the front surface terminal arc surface is connected to the eighth arc surface of the rear surface through a connecting zone. The corneal contact lens provided by the present invention can make tears flow more smoothly between the eyeball and the corneal contact lens, effectively alleviate the discomfort symptoms caused by wearing the corneal contact lens for a long time, and improve wearing comfort.
Description
Technical Field
The present invention relates to a contact lens, and more particularly, to a contact lens capable of improving wearing comfort.
Background
Corneal contact lenses are popular with users because of their convenience of wear, but can be uncomfortable to wear for extended periods of time. After lacrimal gland secretes tear, tear can freely flow on eyeball surface, wear hard cornea contact lens back owing to the isolation in surrounding area and make eyeball on wear the position of cornea contact lens and other positions produce an isolation, cause the tear that the position of wearing cornea contact lens secretes can't flow with tear on other positions to appear eyes symptoms such as dry and astringent, red swelling, some serious patients even need eyedrops and artificial tear cooperation just can alleviate uncomfortable symptom.
Currently, the peripheral area of the existing contact lens is usually formed by an arc surface, and the curvature of the arc is curved to one side, and the structure can lead tear on the surface of the eyeball to flow poorly, thereby causing uncomfortable symptoms to a user and being unfavorable for the user to wear, and urgent improvement is needed.
Disclosure of Invention
The invention aims to provide a cornea contact lens capable of improving wearing comfort, which can change the structure of a peripheral area and obviously improve the wearing comfort of a wearer.
To achieve the above object, the present invention provides a contact lens for cornea capable of improving wearing comfort, comprising: the front surface consists of a front surface optical area and a front surface peripheral area outside the front surface central part, and the rear surface consists of a rear surface base arc area of the rear surface central part and a rear surface peripheral area outside the rear surface central part; the front surface peripheral area is formed by two to four circular arc curved surfaces which are sequentially arranged from inside to outside, wherein the circular arc curved surface at the tail end of the front surface is not on the same side as the arc centers of other circular arc curved surfaces of the front surface, the rear surface peripheral area is formed by eight circular arc curved surfaces which are sequentially arranged from inside to outside, the bending directions of the first circular arc curved surface of the rear surface, the second circular arc curved surface of the rear surface, the fourth circular arc curved surface of the rear surface, the fifth circular arc curved surface of the rear surface, the sixth circular arc curved surface of the rear surface and the eighth circular arc curved surface of the rear surface are the same, the bending directions of the third circular arc curved surface of the rear surface and the seventh circular arc curved surface of the rear surface are not on the same side as the arc centers of the first circular arc curved surface, and the tail end circular arc curved surface of the front surface and the eighth circular arc curved surface of the rear surface are connected through a connecting area.
Optionally, the first arc curved surface of the rear surface is connected with the base arc area of the rear surface.
Optionally, the arc center of the first arc curved surface of the rear surface is on the same side as the arc center of the body.
Optionally, the connection part of the first arc curved surface of the rear surface and the base arc area of the rear surface is tangent, and the curvature radius of the first arc curved surface of the rear surface is 0.1mm to 0.5mm larger than that of the base arc area of the rear surface; the first arc curved surface of the rear surface is tangent to the second arc curved surface of the rear surface, and the curvature radius of the second arc curved surface of the rear surface is the same as that of the base arc area of the rear surface; the second arc curved surface of the rear surface is reversely tangent with the third arc curved surface of the rear surface, and the radius of curvature of the third arc curved surface of the rear surface is 1mm to 20mm; the fourth arc curved surface of the rear surface is reversely tangent with the third arc curved surface of the rear surface, and the curvature radius of the fourth arc curved surface of the rear surface is 1mm to 10mm larger than that of the base arc area of the rear surface; the fifth arc curved surface of the rear surface is tangent to the fourth arc curved surface of the rear surface, and the curvature radius of the fifth arc curved surface of the rear surface is 0.5mm to 3mm smaller than that of the base arc area of the rear surface; the sixth arc curved surface of the rear surface is tangent to the fifth arc curved surface of the rear surface, and the curvature radius of the sixth arc curved surface of the rear surface is 1mm to 5mm larger than that of the first arc curved surface of the rear surface; the seventh arc curved surface of the rear surface is reversely tangent with the sixth arc curved surface of the rear surface, and the radius of curvature of the seventh arc curved surface of the rear surface is 1mm to 20mm; the eighth arc curved surface of the rear surface is reversely tangent with the seventh arc curved surface of the rear surface, and the curvature radius of the eighth arc curved surface of the rear surface is 1mm to 10mm larger than that of the base arc area of the rear surface.
Optionally, the centers of the first arc curved surface of the rear surface, the second arc curved surface of the rear surface, the fourth arc curved surface of the rear surface, the fifth arc curved surface of the rear surface, the sixth arc curved surface of the rear surface and the eighth arc curved surface of the rear surface are all on the central axis of the body.
Optionally, the arc center of the front surface end arc curved surface is on the same side as the arc center of the body.
Optionally, the connection part between the front surface end arc curved surface and the rear surface eighth arc curved surface and the connection area is arc connection.
Optionally, the radius of curvature of the front surface end circular arc curved surface is 30mm to 1mm.
Optionally, when the other circular arc curved surface of the front surface is one, the radius of curvature of the other circular arc of the front surface is 10mm to 30mm.
Alternatively, when the number of other arc curved surfaces of the front surface is two, the radius of curvature of the arc adjacent to the optical area of the front surface is 10mm to 30mm, and the radius of curvature of the arc adjacent to the end arc curved surface of the front surface is 15mm to 30mm.
The cornea contact lens capable of improving wearing comfort provided by the invention has the advantages that the peripheral area is formed by eight cambered surfaces and has different directions, so that tears on the surface of an eyeball can flow sufficiently, and uncomfortable symptoms such as dry eyes can be effectively avoided. And through changing the structure of the peripheral area of the front surface and the rear surface, the wearing comfort of a user is obviously improved, and particularly, the third circular arc curved surface of the rear surface and the seventh circular arc curved surface of the rear surface provide a transition, so that tears flow between eyeballs and the cornea contact lens more smoothly, discomfort symptoms caused by wearing the cornea contact lens for a long time are effectively relieved, and the wearing comfort is improved.
Drawings
FIG. 1 is a cross-sectional view of a contact lens of an embodiment of the present invention;
FIG. 2 is a three-dimensional schematic view of the front surface of an embodiment of the invention;
FIG. 3 is a three-dimensional schematic view of the rear surface of an embodiment of the invention;
FIG. 4 is a schematic view of the front surface peripheral region in two parts according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of FIG. 4;
FIG. 6 is a schematic view of the front surface peripheral region in three parts according to an embodiment of the present invention;
FIG. 7 is a schematic perspective view of FIG. 6;
FIG. 8 is a schematic view of a peripheral region of a rear surface according to an embodiment of the present invention;
fig. 9 is a perspective view of fig. 8;
FIG. 10 is a plan view of a peripheral region of the rear surface of an embodiment of the present invention;
FIG. 11 is an enlarged schematic view of a connection region according to an embodiment of the present invention;
Fig. 12 is an enlarged schematic view of a rear surface peripheral region according to an embodiment of the present invention.
In the figure: 1. a front surface; 11. a front surface optical zone; 12. a front surface peripheral region; 121. a front surface end arc curved surface; 122. other arc curved surfaces on the front surface; 2. a rear surface; 21. a rear surface base arc region; 22. a rear surface peripheral region; 221. the rear surface is a first arc curved surface; 222. a second arc curved surface on the rear surface; 223. a third arc curved surface on the rear surface; 224. a fourth arc curved surface on the rear surface; 225. a fifth arc curved surface on the rear surface; 226. a sixth arc curved surface on the rear surface; 227. a seventh arc curved surface on the rear surface; 228. an eighth circular arc curved surface on the rear surface; 3. a connection region; 4. a body.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
Example 1
As shown, this embodiment provides a contact lens for improving wearing comfort, comprising: a body 4, a front surface 1 and a rear surface 2 of the body, the front surface 1 being constituted by a front surface optical zone 11 and a front surface peripheral zone 12 outside the front surface central portion in the central portion, the rear surface 2 being constituted by a rear surface base arc zone 21 and a rear surface peripheral zone 22 outside the rear surface central portion in the rear surface central portion; the front surface peripheral region 12 is formed by two to four sequentially inner and outer annular arc curved surfaces, wherein the arc centers of the front surface end arc curved surface 121 and the front surface other arc curved surfaces 122 are not on the same side, the rear surface peripheral region 22 is formed by eight sequentially inner and outer annular arc curved surfaces, wherein the bending directions of the rear surface first arc curved surface 221, the rear surface second arc curved surface 222, the rear surface fourth arc curved surface 224, the rear surface fifth arc curved surface 225, the rear surface sixth arc curved surface 226 and the rear surface eighth arc curved surface 228 are the same, the bending directions of the rear surface third arc curved surface 223 and the rear surface seventh arc curved surface 227 are not on the same side as the arc centers of the rear surface first arc curved surface 221, the front surface end arc curved surface 121 and the rear surface eighth arc curved surface 228 are connected through the connecting region 3, and the rear surface first arc curved surface 221 is connected with the rear surface base arc region 21.
The arc center of the rear surface first arc curved surface 221 is on the same side as the arc center of the body.
The connection part of the rear surface first arc curved surface 221 and the rear surface base arc area 21 is tangent, and the curvature radius of the rear surface first arc curved surface 221 is 0.1mm to 0.5mm larger than that of the rear surface base arc area 21; the rear surface first arc curved surface 221 is tangent to the rear surface second arc curved surface 222, and the curvature radius of the rear surface second arc curved surface 222 is the same as that of the rear surface base arc area 21; the rear surface second circular arc curved surface 222 is reversely tangent with the rear surface third circular arc curved surface 223, and the curvature radius of the rear surface third circular arc curved surface 223 is 1mm to 20mm; the back surface fourth arc curved surface 224 is reversely tangent to the back surface third arc curved surface 223, and the curvature radius of the back surface fourth arc curved surface 224 is 1mm to 10mm larger than the curvature radius of the back surface base arc area 21; the rear surface fifth arc curved surface 225 is tangent to the rear surface fourth arc curved surface 224, and the curvature radius of the rear surface fifth arc curved surface 225 is 0.5mm to 3mm smaller than the curvature radius of the rear surface base arc area 21; the rear surface sixth curved surface 226 is tangent to the rear surface fifth curved surface 225, and the radius of curvature of the rear surface sixth curved surface 226 is 1mm to 5mm greater than the radius of curvature of the rear surface first curved surface 221; the seventh arc curved surface 227 of the rear surface is reversely tangent to the sixth arc curved surface 226 of the rear surface, and the radius of curvature of the seventh arc curved surface 227 of the rear surface is 1mm to 20mm; the eighth back surface arcuate surface 228 is inversely tangent to the seventh back surface arcuate surface 227, and the eighth back surface arcuate surface 228 has a radius of curvature that is 1mm to 10mm greater than the radius of curvature of the base back surface arcuate region 21. The centers of the rear surface first arc curved surface 221, the rear surface second arc curved surface 222, the rear surface fourth arc curved surface 224, the rear surface fifth arc curved surface 225, the rear surface sixth arc curved surface 226 and the rear surface eighth arc curved surface 228 are all on the central axis of the body.
The arc center of the front surface end arc curved surface 121 is on the same side as the arc center of the body.
The connection part of the front surface end arc curved surface 121 and the rear surface eighth arc curved surface 228 and the connection area 3 is in arc connection. The radius of curvature of the front surface end circular arc curved surface 121 is 30mm to 1mm.
When the number of the other arc curved surfaces 122 of the front surface is one, the radius of the other arc curved surfaces 122 of the front surface is 10mm to 30mm.
Example 2
When the other circular arc curved surfaces of the front surface in embodiment 1 are two, the radius of curvature of the circular arc adjacent to the optical area of the front surface is 10mm to 30mm, and the radius of curvature of the circular arc adjacent to the end circular arc curved surface of the front surface is 15mm to 30mm. Other details are not repeated in the same manner as in embodiment 1.
The principle of the invention is as follows: the invention provides a transition between the third arc curved surface of the rear surface and the seventh arc curved surface of the rear surface, and the directions of the third arc curved surface and the seventh arc curved surface of the rear surface are different from those of other arcs, so that tears flow between eyeballs and the cornea contact lens more smoothly, and discomfort caused by wearing the cornea contact lens for a long time is effectively relieved; meanwhile, the thickness of the lens is reduced, and the transition effect is achieved when the lens is connected with other arcs, so that the gap between the eyeball and the peripheral arc is larger, wherein the third arc curved surface of the rear surface and the seventh arc curved surface of the rear surface are respectively reversely tangent to the adjacent arc curved surfaces, so that the lens can be well transitioned, and the compression of the arc-arc connection part to the eyeball is effectively reduced.
The cornea contact lens capable of improving wearing comfort provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556665.2A CN112415779B (en) | 2020-12-25 | 2020-12-25 | A corneal contact lens capable of improving wearing comfort |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011556665.2A CN112415779B (en) | 2020-12-25 | 2020-12-25 | A corneal contact lens capable of improving wearing comfort |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112415779A CN112415779A (en) | 2021-02-26 |
| CN112415779B true CN112415779B (en) | 2024-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011556665.2A Active CN112415779B (en) | 2020-12-25 | 2020-12-25 | A corneal contact lens capable of improving wearing comfort |
Country Status (1)
| Country | Link |
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| CN (1) | CN112415779B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213780578U (en) * | 2020-12-25 | 2021-07-23 | 沈阳百奥医疗器械有限公司 | Corneal contact lens capable of improving wearing comfort |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008112120A (en) * | 2006-10-30 | 2008-05-15 | Eyemed Co Ltd | Multiple surface fitting ortho-k lens |
| CA2726806C (en) * | 2008-06-06 | 2016-11-08 | Global-Ok Vision, Inc. | Soft contact lenses for treating ametropia |
| CN208270872U (en) * | 2017-04-30 | 2018-12-21 | 欧普康视科技股份有限公司 | Correct the hard corneal contact lens of irregular cornea eyesight |
| CN108008544B (en) * | 2017-12-06 | 2020-05-12 | 爱博诺德(北京)医疗科技股份有限公司 | Method for manufacturing orthokeratology mirror |
| CN108363219A (en) * | 2018-04-02 | 2018-08-03 | 广州豪赋医学科技有限公司 | A kind of hard corneal contact lens |
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- 2020-12-25 CN CN202011556665.2A patent/CN112415779B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN213780578U (en) * | 2020-12-25 | 2021-07-23 | 沈阳百奥医疗器械有限公司 | Corneal contact lens capable of improving wearing comfort |
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| Publication number | Publication date |
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| CN112415779A (en) | 2021-02-26 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231007 Address after: 110163 Surabaya street, Hunnan District, Shenyang, Liaoning 66 Applicant after: SHENYANG BAIAO MEDICAL DEVICES CO.,LTD. Address before: No. 66, Sishui street, Dongling District, Shenyang City, Liaoning Province Applicant before: SHENYANG BAIAO MEDICAL DEVICES CO.,LTD. Applicant before: SHENYANG HESHI EYE INDUSTRY GROUP CO.,LTD. |
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