WO2021257010A1 - Elliptical intraocular lens - Google Patents
Elliptical intraocular lens Download PDFInfo
- Publication number
- WO2021257010A1 WO2021257010A1 PCT/TR2020/050514 TR2020050514W WO2021257010A1 WO 2021257010 A1 WO2021257010 A1 WO 2021257010A1 TR 2020050514 W TR2020050514 W TR 2020050514W WO 2021257010 A1 WO2021257010 A1 WO 2021257010A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lens
- elliptical
- horizontal
- vertical
- optical
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/1689—Intraocular lenses having supporting structure for lens, e.g. haptics having plate-haptics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
Definitions
- the invention is related to an elliptical (oval shaped) shaped optical intraocular lens used in cataract and clear lens operations.
- the lenses used are formed of two sections. These sections are the optical and the haptical sections.
- the central section that is named as the optical section is a refractive section that focuses the image at the centre section to the retina.
- the other section called the haptical section that enables the lens to be fixed in the region called the capsule inside the eye, are the legs that ensure that the lens stays inside the sac.
- the horizontal and vertical diameters are 6.00 mm and they have an annular shaped optic.
- This optical diameter is wide enough to envelope the pupilla space in most of the patients, during dark and light adaptations.
- this optical diameter has disadvantages as the rays forming the peripheral field of vision that are received at an angle by the eye and are reflected from the periphery of the dome- shaped cornea cannot reach particularly the nasal retina.
- Another problem is the reflections caused by the edge structure of the optic.
- Optics having high and sharp edges have been developed to prevent the migration of lens epithelium cells that may remain after an operation in the equator and the posterior capsule denseness that may occur after a cataract operation.
- this sharp edge creates a total inner reflection and prevents the angular rays received from the periphery from reaching the retina.
- the present invention has been developed in order to eliminate the disadvantages mentioned above and is related to an optical intraocular lens having an elliptical design in order to provide new advantages to the related technical field.
- the invention increases by widening the horizontal diameter of the optical section which provides the diffraction of the optical performance of lenses that are used.
- the invention aims to establish an elliptical model instead of a circular model by increasing only the horizontal diameter length without changing the optical material.
- a lens having an elliptical oval wide peripheral field has been developed by means of the invention. It can be used with any kind of haptical design (11 mm diameter plate-panel haptic or 13 mm diameter C-loop haptic used frequently at present).
- the vertical length of the developed lens is between 5.00-11.00 mm and the horizontal length is between 6.00-12.00 mm.
- Figure 1 view of a 6.00 mm vertical and 7.00 mm horizontal lens.
- Figure 2 view of a 6.00 mm vertical and 7.00 mm horizontal lens.
- Figure 3 view of a 6.60 mm vertical and 7.00 mm horizontal lens.
- Figure 4 view of a 6.50 mm vertical and 7.00 mm horizontal lens.
- Figure 5 view of a 6.00 mm vertical and 6.50 mm horizontal lens.
- Figure 6 view of a 6.00 mm vertical and 6.50 mm horizontal lens.
- Figure 7 view of a 6.00 mm vertical and 7.50 mm horizontal lens.
- Figure 8 view of a 6.00 mm vertical and 7.50 mm horizontal lens.
- Figure 9 view of a 6.00 mm vertical and 8.00 mm horizontal lens.
- Figure 10 view of a 6.00 mm vertical and 8.00 mm horizontal lens.
- Figure 11 view of a 6.50 mm vertical and 7.50 mm horizontal lens.
- Figure 12 view of a 6.50 mm vertical and 7.50 mm horizontal lens.
- the elliptical (oval-shaped) lens optics (1) developed by the invention are used to create vision with a wider temporal area (temple bone area) and nasal visual field (nose area).
- the lenses are shown perpendicularly.
- the lengths covered by the invention are also shown. These lengths are 6.00 mm vertical and 7.00 mm horizontal, 6.50 mm vertical and 7.00 mm horizontal, 6.00 mm vertical and 6.50 mm horizontal, 6.00 mm vertical and 7.50 mm horizontal, 6.00 vertical and 8.00 mm horizontal, 6.50 mm vertical and 7.50 mm horizontal.
- the edge profile of the developed elliptical lens optics (1) will be located at the periphery of the pupil area, the risk of reflection of the angular light sources from the edge of the optic and the risk of negative dysphotopsia shall be reduced. By means of a wide optical angle, a field of view with little or no risk of dysphotopsia has been obtained.
- the horizontal length of the elliptical lens optic (1) designed by means of the invention is between 6.00 mm and 12.00 mm and the vertical length is between 5.00 and 11.00 mm.
- the optical design (for example 6.00 mm vertical and 7.00 mm horizontal diameter) having an elliptical shape, with a minimum horizontal diameter of 6.00 mm (between 6.00 mm- 12.00 mm) and a minimum vertical diameter of 5.00 mm (between 5.00 mm - 11.00 mm) provides a wider visual field for patients and it eliminates the involuntary peripheral light diffraction complaints that are seen.
- These lengths can have 6.80 mm vertical and 7.00 mm horizontal diameter. In said invention it is conditional for the vertical length to be shorter than the horizontal length.
- the vertical visual fields of the normal eye have a visual field with an upper dial of 60 degrees, lower dial of 75 degrees, nasal dial of 60 degrees and a temporal dial (outer dial) of 95 degrees.
- a single eye has a visual angle of 135 degrees vertically and 155 degrees horizontally. As the horizontal angle is much wider, instead of the presently used radial intraocular lenses, the usage of elliptical shaped optical intraocular lenses enables a wider visual area for patients and it eliminates the complaints related to reflection from the edges of the lens.
- the optical platform can be used with single or multifocal lenses. Theoretically a 45 degree rotation can be tolerated and due to this reason it can be used in toric (stigmator) platforms where the centre of the vertical axis can be placed at 180 or 90 degrees in the optical region.
- All of the rays that are received around the periphery of the cornea and are received at a wider angle into the eye can remain within the optical region by means of the wide optical lenses and thanks to our lens that has a much wider optic in comparison to the presently used lenses, all of the wide-angle lights will pass through the optic of the lens and they will reach the retina.
- the lens shall reduce or even completely eliminate the total inner reflection phenomenon that prevents the reflections arising from the edge structure of the lens and the light from reaching the retina. Due to the horizontal edges of our wide optic structured elliptical lens, the pupilla space shall remain at the periphery in comparison to the present lenses, and thereby the refection and darkness sensation formed by the edge structure shall be reduced.
- Patients that have undergone cataract surgery or clear lens surgery and who have intraocular lens(es) can be defined as those who are in need of this invention.
- the people in need can have an illuminated and wider peripheral vision without reflections.
- the material of the intraocular lens designed and its production process does not change.
- the field of vision has been extended by means of the modified optical shape. Since the distance between the pupil and the optical area shall be wider, the symptom of negative dysphotopsia decreases.
- the risk of reflection of light back from the sharp edges of the developed intraocular lens is minimal or said risk is non-existent.
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention is related to an elliptical (oval shaped) shaped optic intraocular lens used in cataract and clear lens operations.
Description
ELLIPTICAL INTRAOCULAR LENS
TECHNICAL FIELD OF THE INVENTION
The invention is related to an elliptical (oval shaped) shaped optical intraocular lens used in cataract and clear lens operations.
KNOWN STATE OF THE ART (PRIOR ART)
In the present systems, intraocular lenses are used in a widespread manner. The lenses used are formed of two sections. These sections are the optical and the haptical sections. The central section that is named as the optical section is a refractive section that focuses the image at the centre section to the retina. The other section called the haptical section that enables the lens to be fixed in the region called the capsule inside the eye, are the legs that ensure that the lens stays inside the sac.
In present lenses, although the haptical structures are different all of the lenses have 6.00 - 7.00 mm annular optics. Lenses belonging to the companies ALCON, AMO, B&L, Biotech have annular optics having a diameter of 6.00 mm. In most of the patients, the present intraocular lenses having annular optics with a diameter of 6.00 mm can be used without causing any symptoms. However a symptom called negative dysphotopsia can be observed in some patients. This symptom is the observation of a temporal (temple and peripheral) shadow and loss of field of vision experienced when the patient is gazing straight ahead. Two possible explanations have been accepted regarding this symptom. The first one is that the light reflecting from the edges of the sharp intraocular lens prevents the light to reach the retina. The second one is that the optics of the present intraocular lenses is not wide enough to envelope the lights that enter from the periphery.
As it has been mentioned in the prior art the horizontal and vertical diameters are 6.00 mm and they have an annular shaped optic. This optical diameter is wide enough to envelope the pupilla space in most of the patients, during dark and light adaptations. However, this optical diameter has disadvantages as the rays forming the peripheral field of vision that are received
at an angle by the eye and are reflected from the periphery of the dome- shaped cornea cannot reach particularly the nasal retina. Another problem is the reflections caused by the edge structure of the optic. Optics having high and sharp edges have been developed to prevent the migration of lens epithelium cells that may remain after an operation in the equator and the posterior capsule denseness that may occur after a cataract operation. However this sharp edge creates a total inner reflection and prevents the angular rays received from the periphery from reaching the retina. Although this is not a complete solution, in lenses having a circular edge design this reflection is theoretically lower.
BRIEF DESCRIPTION OF THE INVENTION AND ITS AIMS
The present invention has been developed in order to eliminate the disadvantages mentioned above and is related to an optical intraocular lens having an elliptical design in order to provide new advantages to the related technical field.
The invention increases by widening the horizontal diameter of the optical section which provides the diffraction of the optical performance of lenses that are used.
The invention aims to establish an elliptical model instead of a circular model by increasing only the horizontal diameter length without changing the optical material.
A lens having an elliptical oval wide peripheral field has been developed by means of the invention. It can be used with any kind of haptical design (11 mm diameter plate-panel haptic or 13 mm diameter C-loop haptic used frequently at present).
The vertical length of the developed lens is between 5.00-11.00 mm and the horizontal length is between 6.00-12.00 mm.
By means of the invention, the complaint of patients, seeing a dark crescent- shaped shadow and having constant field loss called negative dysphotopsia that are observed in optical diameter annular optic lenses has been eliminated or reduced.
Definition of the Figures of the Invention
Bu figures that have been prepared in order to further describe the elliptical shaped intraocular lens used in cataract surgeries developed by the invention have been described below:
Figure 1, view of a 6.00 mm vertical and 7.00 mm horizontal lens. Figure 2, view of a 6.00 mm vertical and 7.00 mm horizontal lens.
Figure 3, view of a 6.60 mm vertical and 7.00 mm horizontal lens.
Figure 4, view of a 6.50 mm vertical and 7.00 mm horizontal lens.
Figure 5, view of a 6.00 mm vertical and 6.50 mm horizontal lens.
Figure 6, view of a 6.00 mm vertical and 6.50 mm horizontal lens. Figure 7, view of a 6.00 mm vertical and 7.50 mm horizontal lens.
Figure 8, view of a 6.00 mm vertical and 7.50 mm horizontal lens.
Figure 9, view of a 6.00 mm vertical and 8.00 mm horizontal lens.
Figure 10, view of a 6.00 mm vertical and 8.00 mm horizontal lens.
Figure 11, view of a 6.50 mm vertical and 7.50 mm horizontal lens. Figure 12, view of a 6.50 mm vertical and 7.50 mm horizontal lens.
Definition of the Aspects and Parts of the Invention
The parts and sections provided in the figures that have been prepared in order to further describe the elliptical shaped intraocular lens used in clear lens cataract operations and clear lens operations developed by means of the invention have each been numbered and the references of each number has been listed below.
1 Elliptical (oval) lens optic.
2 Haptic
DETAILED DESCRIPTION OF THE INVENTION
The novelty of the invention has been described with examples that shall not limit the scope of the invention and which have been intended to only clarify the subject matter of the invention.
The elliptical (oval-shaped) lens optics (1) developed by the invention are used to create vision with a wider temporal area (temple bone area) and nasal visual field (nose area).
Nowadays, standard intraocular lenses are used for refractive stability after transparent lens and cataract surgeries.
In the figures used to better explain the invention, the lenses are shown perpendicularly. The lengths covered by the invention are also shown. These lengths are 6.00 mm vertical and 7.00 mm horizontal, 6.50 mm vertical and 7.00 mm horizontal, 6.00 mm vertical and 6.50 mm
horizontal, 6.00 mm vertical and 7.50 mm horizontal, 6.00 vertical and 8.00 mm horizontal, 6.50 mm vertical and 7.50 mm horizontal.
Since the edge profile of the developed elliptical lens optics (1) will be located at the periphery of the pupil area, the risk of reflection of the angular light sources from the edge of the optic and the risk of negative dysphotopsia shall be reduced. By means of a wide optical angle, a field of view with little or no risk of dysphotopsia has been obtained.
The horizontal length of the elliptical lens optic (1) designed by means of the invention, is between 6.00 mm and 12.00 mm and the vertical length is between 5.00 and 11.00 mm. The optical design (for example 6.00 mm vertical and 7.00 mm horizontal diameter) having an elliptical shape, with a minimum horizontal diameter of 6.00 mm (between 6.00 mm- 12.00 mm) and a minimum vertical diameter of 5.00 mm (between 5.00 mm - 11.00 mm) provides a wider visual field for patients and it eliminates the involuntary peripheral light diffraction complaints that are seen. These lengths can have 6.80 mm vertical and 7.00 mm horizontal diameter. In said invention it is conditional for the vertical length to be shorter than the horizontal length.
The vertical visual fields of the normal eye have a visual field with an upper dial of 60 degrees, lower dial of 75 degrees, nasal dial of 60 degrees and a temporal dial (outer dial) of 95 degrees. A single eye has a visual angle of 135 degrees vertically and 155 degrees horizontally. As the horizontal angle is much wider, instead of the presently used radial intraocular lenses, the usage of elliptical shaped optical intraocular lenses enables a wider visual area for patients and it eliminates the complaints related to reflection from the edges of the lens.
The optical platform can be used with single or multifocal lenses. Theoretically a 45 degree rotation can be tolerated and due to this reason it can be used in toric (stigmator) platforms where the centre of the vertical axis can be placed at 180 or 90 degrees in the optical region.
By means of the elliptical shaped optical design, that has been developed, two benefits can be observed:
1. All of the rays that are received around the periphery of the cornea and are received at a wider angle into the eye can remain within the optical region by means of the wide optical lenses and thanks to our lens that has a much wider optic in comparison
to the presently used lenses, all of the wide-angle lights will pass through the optic of the lens and they will reach the retina.
2. By means of the wide optical design, the lens shall reduce or even completely eliminate the total inner reflection phenomenon that prevents the reflections arising from the edge structure of the lens and the light from reaching the retina. Due to the horizontal edges of our wide optic structured elliptical lens, the pupilla space shall remain at the periphery in comparison to the present lenses, and thereby the refection and darkness sensation formed by the edge structure shall be reduced.
Patients that have undergone cataract surgery or clear lens surgery and who have intraocular lens(es) (single focus or multi-focal) can be defined as those who are in need of this invention. By means of the benefits of the invention, the people in need can have an illuminated and wider peripheral vision without reflections.
In Figure -1 and Figure -2, elliptical oval optical lens models are illustrated having 6.00 mm vertical and 7.00 mm horizontal diameters. At the same time, in the figures, the usage of the 11 mm diameter plate-panel haptic (Figure- 1) or the 13 mm diameter C-loop haptic (Figure-2) that is frequently used at present is shown. It is shown that said invention can be used with present haptical designs.
The material of the intraocular lens designed and its production process does not change. The field of vision has been extended by means of the modified optical shape. Since the distance between the pupil and the optical area shall be wider, the symptom of negative dysphotopsia decreases. The risk of reflection of light back from the sharp edges of the developed intraocular lens is minimal or said risk is non-existent.
Claims
1. An elliptical (oval shaped) optical shaped intraocular lens characterized in that;
• The vertical length thereof is between 5.00- 11.00 mm,
• The horizontal length thereof is between 6.00-12.00 mm, with the condition that the vertical length is shorter than the horizontal length.
2. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.00 mm and the horizontal length of the lens is 7.00 mm.
3. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.50 mm and the horizontal length of the lens is 7.00 mm.
4. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.00 mm and the horizontal length of the lens is 6.50 mm.
5. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.00 mm and the horizontal length of the lens is 7.50 mm.
6. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.00 mm and the horizontal length of the lens is 8.00 mm.
7. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.50 mm and the horizontal length of the lens is 7.50 mm.
8. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 6.80 mm and the horizontal length of the lens is 7.00 mm.
9. An elliptical (oval shaped) optical shaped intraocular lens according to claim 1, characterized in that the vertical length of the lens is 5.00 mm and the horizontal length of the lens is 6.00 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/TR2020/050514 WO2021257010A1 (en) | 2020-06-16 | 2020-06-16 | Elliptical intraocular lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/TR2020/050514 WO2021257010A1 (en) | 2020-06-16 | 2020-06-16 | Elliptical intraocular lens |
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WO2021257010A1 true WO2021257010A1 (en) | 2021-12-23 |
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PCT/TR2020/050514 WO2021257010A1 (en) | 2020-06-16 | 2020-06-16 | Elliptical intraocular lens |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06189985A (en) * | 1992-12-28 | 1994-07-12 | Kyocera Corp | Intraocular implant |
WO2014005074A1 (en) * | 2012-06-29 | 2014-01-03 | Abbott Medical Optics Inc. | Reduced glare intraocular lens |
WO2014108101A1 (en) * | 2013-01-14 | 2014-07-17 | Wang Qingyang | Intraocular lens |
-
2020
- 2020-06-16 WO PCT/TR2020/050514 patent/WO2021257010A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06189985A (en) * | 1992-12-28 | 1994-07-12 | Kyocera Corp | Intraocular implant |
WO2014005074A1 (en) * | 2012-06-29 | 2014-01-03 | Abbott Medical Optics Inc. | Reduced glare intraocular lens |
WO2014108101A1 (en) * | 2013-01-14 | 2014-07-17 | Wang Qingyang | Intraocular lens |
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