WO2006129707A1 - 眼用レンズ - Google Patents
眼用レンズ Download PDFInfo
- Publication number
- WO2006129707A1 WO2006129707A1 PCT/JP2006/310872 JP2006310872W WO2006129707A1 WO 2006129707 A1 WO2006129707 A1 WO 2006129707A1 JP 2006310872 W JP2006310872 W JP 2006310872W WO 2006129707 A1 WO2006129707 A1 WO 2006129707A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- distance
- power
- lens optical
- optical region
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 119
- 238000009826 distribution Methods 0.000 claims abstract description 46
- 230000000750 progressive effect Effects 0.000 claims abstract description 7
- 201000009310 astigmatism Diseases 0.000 claims description 28
- 210000004087 cornea Anatomy 0.000 claims description 23
- 230000004438 eyesight Effects 0.000 claims description 19
- 208000001491 myopia Diseases 0.000 claims description 17
- 238000012937 correction Methods 0.000 claims description 13
- 210000001508 eye Anatomy 0.000 description 39
- 230000002146 bilateral effect Effects 0.000 description 19
- 210000001747 pupil Anatomy 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 210000000744 eyelid Anatomy 0.000 description 5
- 230000004304 visual acuity Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000009191 jumping Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 210000003786 sclera Anatomy 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002195 synergetic effect 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
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/043—Translating type
-
- 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
- G02C7/048—Means for stabilising the orientation of lenses in the eye
Definitions
- the present invention relates to an ophthalmic lens, and more particularly to an ophthalmic lens suitable for use in a progressive multifocal perspective lens.
- the far-near contact lens has a distance portion 102 for assisting the distance vision at the center of the lens optical region 101, and a peripheral portion for the lens optical region 101.
- the near portion 103 for assisting the visual acuity is arranged between the distance portion 102 and the near portion 103, and the intermediate portion 104 whose power changes continuously is arranged, so that the power in the lens optical region 101 is increased.
- a simultaneous vision bifocal contact lens 100 distributed concentrically is known (Patent Document 1).
- the bifocal alternator type contact lens is provided with a distance portion above the lens optical region and a near portion below the lens optical region. Tact lenses are known.
- the far-distance contact lens has a far-distance force above the lens optical area and a near-distance portion below the distance optical portion.
- a trifocal alternating vision contact lens is known in which an intermediate portion having an intermediate power between the near portion and the near portion is provided.
- Patent Document 1 Japanese Patent Laid-Open No. 59-208524
- Patent Document 2 US Patent No. 4693572
- Patent Document 3 British Patent No. 1025677
- the frequency distribution is concentric as shown in FIG. 12, and thus the bilateral contact lens 100 has no directionality.
- the contact lens 100 is configured so as not to interfere with the rotation.
- the pupil 1 Since the near portion 103 and the intermediate portion 104 of the contact lens 100 are positioned on the upper portion of the contact lens 100, light entering the pupil 110 through the near portion 103 and the intermediate portion 104 (particularly the near portion 103) is used to Blur and ghosting may occur, and a clear image may not be obtained, resulting in a decrease in contrast.
- the bifocal or trifocal bifocal contact lens described in Patent Documents 2 and 3 has a rough power distribution that does not have a specific description of the power distribution. For this reason, image shakes and jumps due to frequency changes occur between distance and near distance, or between distance, middle, and near distances. Since it is not possible, blurring and ghosting are likely to occur. As a result, there is a possibility that a clear image cannot be obtained even with the bifocal contact lenses described in Patent Documents 2 and 3.
- An object of the present invention has been made in consideration of the above-described circumstances. In addition to ensuring a stable image in the distance portion and the near portion, the occurrence of blurring, ghosting, and the like can be ensured.
- An object of the present invention is to provide an ophthalmic lens that can suppress and obtain a clear image.
- the invention according to claim 1 is a lens optical region, the distance portion for assisting the far vision, the middle portion for assisting the intermediate distance vision, and the near vision
- a progressive multifocal ophthalmic lens having a near portion, wherein the distance portion, the intermediate portion, and the near portion are moved in a predetermined direction of the lens optical region by force from the upper end to the lower end of the optical portion.
- the invention according to claim 2 is characterized in that, in the invention according to claim 1, the power distribution of the lens optical region is set according to the following equation (1).
- PowerDist P—Power-tan "X 1 Wave tan 1 (Wave) (1)
- P-Power Frequency at one end of lens optical area (unit: D)
- Max-Add Frequency difference between one end point and the other end point of lens optical area (unit: D)
- the invention of claim 3 is the invention of claim 2, wherein the ranges of the values of the P-Power, the Max-Add, the Bnf, and the Wave are as follows.
- the invention according to claim 4 is the invention according to claim 1, 2 or 3, wherein the frequency distribution of the lens optical region is a radius of curvature of at least one of a front surface and a back surface of the lens optical region. Is set in a range from the distance portion to the near portion through the intermediate portion.
- the invention according to claim 5 is the invention according to any one of claims 1, 2 to 4, wherein the predetermined direction is a longitudinal direction of the eye when the ophthalmic lens is worn. It is what you do.
- the invention of claim 6 is the invention of any one of claims 1, 2 to 4, wherein the predetermined direction is from the longitudinal direction of the eye to the nose side of the face when the ophthalmic lens is worn. It is characterized by being set at an angle.
- the invention according to claim 7 is the invention according to any one of claims 1, 2 to 6, wherein the ophthalmic lens prevents rotation of the lens on an end side along a predetermined direction.
- the contact lens is provided with a rotation prevention mechanism.
- the invention according to claim 8 is the invention according to claim 7, wherein the rotation preventing mechanism is The prism ballast is provided on the other end side along the predetermined direction of the contact lens.
- the invention according to claim 9 is the invention according to claim 7, wherein the anti-rotation mechanism is a slab-off provided at one or both ends along a predetermined direction of the contact lens. It is a life.
- the invention according to claim 10 is the invention according to any one of claims 1, 2 to 9, wherein at least one of the front surface and the back surface of the lens optical region has a predetermined direction of the lens optical region.
- a power distribution according to the equation (1) is set along the line, and an astigmatism power is set in a direction orthogonal to the predetermined direction.
- the invention according to claim 11 is the invention according to any one of claims 1, 2 to 9, wherein one of the front surface and the back surface of the lens optical region is along a predetermined direction of the lens optical region.
- a frequency distribution according to Equation (1) is set, and the other of the front surface and the back surface is formed on a toric surface having an astigmatism correction function.
- the invention according to claim 12 is the invention according to claim 11, wherein the ophthalmic lens is a contact lens in which a back surface of a lens optical region is attached to a cornea of an eye, and the back surface is astigmatism. It is a toric surface formed corresponding to the shape of the cornea in the state.
- the upper part of the lens is the far-distance part, far-sighted vision with a lens power distribution that is clearer than that of a concentric lens is possible.
- the occurrence of image jumps and ghosts can be suppressed by continuously changing.
- the power distribution along the predetermined direction of the lens optical region in the ophthalmic lens is set according to the equation (1). It is possible to make the power distribution in the lens optical area of the lens lens a specific power distribution suitable for the eye prescription of the eye lens wearer. Therefore, the distance and near distances of the ophthalmic lens Since the frequency fluctuation in each can be reduced, a stable image can be secured in each of the distance portion and the near portion.
- the ophthalmic lens moves between the distance portion, the intermediate portion, and the near portion.
- the lens optical area can be given subtle power changes corresponding to changes in the line of sight and movement of the ophthalmic lens.
- blurring and ghosting of the image can be minimized, image contrast can be prevented from being lowered, and image shaking and jumping due to excessive frequency changes can be suppressed. Can be secured.
- the predetermined direction force in the lens optical region is set so as to be inclined from the vertical direction of the eye to the nose side of the face when the ophthalmic lens is worn. Since the part, the middle part, and the near part are arranged to be inclined toward the nose side of the face in the lens optical region, it is possible to satisfactorily cope with the characteristics of eyes that are congested in near vision.
- the ophthalmic lens is a contact lens having an anti-rotation mechanism on the end side along the predetermined direction, and is thus mounted on the cornea of the eye.
- the rotation of the contact lens is prevented or suppressed by the rotation prevention mechanism. Therefore, a clear image can always be stably obtained by the distance portion and the near portion of the contact lens.
- the power distribution according to the equation (1) is set on at least one of the front surface and the back surface of the lens optical region along a predetermined direction of the lens optical region. Since the astigmatism power is set in a direction orthogonal to the predetermined direction, an ophthalmic lens having a function of correcting astigmatism in addition to a function of assisting far vision and near vision can be realized.
- a power distribution according to the equation (1) is set on one of the front surface and the back surface of the lens optical region along a predetermined direction of the lens optical region. Since the other side of the back surface is formed as a toric surface having an astigmatism correction function, this toric surface can perform an astigmatism correction function regardless of the frequency distribution according to Equation (1). Therefore, this toric surface can provide a correction function for almost all astigmatism such as astigmatism, direct astigmatism, and oblique astigmatism.
- the ophthalmic lens is a contact lens in which the back surface of the lens optical region is attached to the cornea of the eye, and the back surface corresponds to the shape of the cornea in an astigmatic state. Since it is a toric surface formed in this way, by attaching this back surface to the cornea of the eye, the function of correcting astigmatism can be exhibited, and the function of preventing rotation of the ophthalmic lens (outer contour lens) can be exhibited. In the case where the anti-rotation mechanism is provided on the end side along the predetermined direction of the lens optical region of the ophthalmic lens, the ophthalmic lens (contact lens) can be more effectively prevented from rotating.
- FIG. 1 is a front view showing a far and near contact lens which is a first embodiment of an ophthalmic lens according to the present invention.
- FIG. 2 is a cross-sectional view taken along the line ⁇ - ⁇ in FIG.
- FIG. 5 is a graph showing the frequency distribution in the lens optical region of FIG. 3 (in the case where the distance portion has a negative frequency).
- FIG. 6 is a graph showing the power distribution in the lens optical region of FIG. 3 (when the distance portion has a positive power).
- a bifocal contact lens 10 shown in FIG. 1 is an ophthalmic lens that is applied to an eye having poor ability to adjust visual acuity, such as a presbyopic eye, and assists the ability to adjust visual acuity.
- 11 is a progressive multifocal contact lens in which a large number of powers exist in a progressive manner.
- the lens optical region 11 of the bifocal contact lens 10 has a distance portion 12 having a distance power for assisting distance vision and a near vision power having a distance power for assisting near vision.
- a portion 13 and an intermediate portion 14 in which the power is progressively changed between the distance portion 12 and the near portion 13 are provided.
- this bilateral contact lens 10 is provided with a flange 15 on the outer periphery of the lens optical region 11 for mounting the bilateral contact lens 10 on the cornea 2 of the eye 1 (both see FIG. 9). ing.
- reference numeral 3 denotes a pupil for capturing light
- reference numeral 4 denotes a sclera
- reference numeral 5 denotes an upper eyelid
- reference numeral 6 denotes a lower eyelid.
- the distance portion 12, the intermediate portion 14, and the near portion 13 are along a predetermined direction of the lens optical region 11, that is, along the longitudinal axis N direction of the lens optical region 11.
- Lens optics They are sequentially arranged from the upper end point A side as one end side of the region 11 to the lower end point B side as the other end side of the lens optical region 11.
- the vertical axis N direction of the lens optical region 11 corresponds to the vertical direction (vertical direction) of the eye 1 when the bilateral contact lens 10 is attached to the eye 1.
- the power distribution of the lens optical region 11 changes symmetrically along the vertical axis N direction of the lens optical region 11, that is, the power is the same in the horizontal axis M direction orthogonal to the vertical axis N.
- the frequency is set so that the distance increases from the distance portion 12 arranged in the N-direction to the near portion 13 through the intermediate portion 14.
- the vertical axis N of the lens optical region 11 is a straight line that passes through the center P of the lens optical region 11 and extends from the upper end point A to the lower end point B.
- the frequency distribution along the vertical axis N direction in the lens optical region 11 is set according to the following equation (1).
- Max-Add power difference between the upper end point A and the lower end point B of the lens optical area 11 (unit: D)
- Bnf distance distance from the upper end point A of the lens optical area 11 to the distance distance 12 of the distance area 13
- Distance to near boundary of frequency unit: mm
- FIG. 5 and FIG. 6 show the frequency distribution along the vertical axis N direction of the lens optical region 11 set by the equation (1). 5 and 6, the vertical axis indicates the frequency (D), and the horizontal axis indicates the distance X (mm) from the upper end point A of the lens optical region 11.
- FIG. 5 shows the case of a far-distance contact lens 10 in which the distance portion 12 is used for a myopic eye having a minus power, and FIG. Show the case.
- the power distribution in the lens optical region 11 of the bifocal contact lens 10 is obtained from the prescription of the eye of the wearer of the bifocal contact lens 10 to obtain the necessary distance vision correction power and the near vision correction power respectively.
- the P-Power, Max-Add, Bnf, and Wave are determined from the correction frequency, and these values are set in Equation (1).
- the power distribution along the vertical axis N direction in the lens optical region 11 of the bilateral contact lens 10 is set by the equation (1), so that the specific power suitable for the prescription of the lens wearer's eye is set.
- the frequency distribution of the lens optical region 11 set in this way is the curvature of at least one of the convex surface 16A that is the surface of the lens optical region 11 and the concave surface 16B that is the back surface (both are shown in Fig. 2). It is realized by changing the radius R in the range from the distance portion 12 to the near portion 13 through the intermediate portion 14, that is, sequentially shortening.
- the concave surface 16B of the lens optical region 11 is formed in a spherical or aspherical shape along the shape of the cornea 2 of the lens wearer's eye 1, so the change in the radius of curvature R It is carried out on the convex surface 16 of the region 11.
- the change in the radius of curvature R of the lens optical region 11 toward the convex surface 16 is caused by a rotation axis C (described later) force parallel to the longitudinal axis N of the lens optical region 11 as shown in FIGS.
- the upper end point A has the curvature radius Rhl
- the points a, b, and c on the same horizontal axis M have the same curvature radius Rh2 and the other same horizontal axis M.
- the same radius of curvature Rh3 At the upper point d, point e, and point f, the same radius of curvature Rh3, and at the same point G, point h, and point i on the same horizontal axis M, the same radius of curvature Rh4, and at the lower end point B, the radius of curvature Set to Rh5 respectively.
- a prism ballast 17 as an anti-rotation mechanism is formed on the lower end point B side along the longitudinal axis N direction of the lens optical region 11.
- the prism ballast 17 is a bilateral contact lens that is mounted on the cornea 2 of the eye 1 by processing the lower end point B side portion of the lens optical region 11 into a thick shape to function as a weight.
- the lower end point B of the lens optical region 11 is always positioned at the lower position by preventing or suppressing the rotation of the lens 10. Due to the presence of this prism ballast 17, the bilateral contact lens 10 mounted on the cornea 2 of the eye 1 has the distance portion 12 in the lens optical area 11 above the eye 1 and the near portion 13 in the eye 1. Each of them will always be positioned stably below.
- the manufacturing process will be described with reference to FIGS.
- the contact lens material 20 covered by the bilateral contact lens 10 is held by the lens holder 21 and rotated about the rotation axis C to be cut. While the tool 22 rotates about the origin O, the cutting tool 22 approaches or moves away from the origin O in the E direction, and the distance L between the cutting tool 22 and the origin O is changed. As the turning angle ⁇ of the cutting tool 22 that rotates from the position corresponding to the upper end point A of the far-near contact lens 10 increases, the cutting tool 22 approaches the origin O as the ⁇ increases, so that the curvature of the lens optical region 11 is increased as described above. A convex surface 16A having a radius R is formed, and a prism ballast 17 is applied to manufacture the bilateral contact lens 10.
- the cutting tool 22 is moved vertically in the lens optical region 11.
- the convex surface 16A having the radius of curvature R described above is formed in the lens optical region 11, and the prism ballast 17 is covered to manufacture the far and near contact lens 10.
- the bilateral contact lens 10 manufactured as described above is attached to the cornea 2 of the eye 1, the bilateral contact lens 10 is provided with the prism ballast 17, so that The distance portion 12 of the lens optical region 11 is stably positioned above the eye 1 and the near portion 13 is stably positioned below the eye 1. For this reason, in far vision, the majority of the pupil 3 of the eye 1 is associated with the distance portion 12 of the bifocal contact lens 10, so that the pupil 3 is separated from the distance portion 12 of the bifocal contact lens 10. As a result, the distance portion 12 can obtain a clear far vision image.
- the lower eyelid 6 pushes the perspective contact lens 10 upward, so that most of the pupil 3 of the eye 1 is the near portion 13 of the perspective contact lens 10.
- the pupil 3 takes in more light from the near portion 13 of the bifocal contact lens 10, and a clear near vision image can be obtained by the near portion 13.
- the frequency distribution along the vertical axis N direction of the lens optical region 11 in the bifocal contact lens 10 is set according to the equation (1), the power distribution in the lens optical region 11 of the bifocal contact lens 10 is Therefore, it is possible to achieve a specific frequency distribution that conforms to the prescription for the eye 1 of the lens wearer. Therefore, since the frequency fluctuation in each of the distance portion 12 and the near portion 13 of the bifocal contact lens 10 can be reduced, the distance portion 12 and the near portion 13 respectively! / Stable and stable images (far vision, near vision) can be secured.
- the far-distance portion 12 of the bifocal contact lens 10 Since the frequency distribution along the vertical axis N direction of the lens optical region 11 in the bifocal contact lens 10 is set by the equation (1), the far-distance portion 12 of the bifocal contact lens 10, The lens optical region 11 (particularly the distance 12, the intermediate 14, and the near 13) changes the line of sight that moves between the intermediate 14 and the near 13 and the subtle change in power corresponding to the movement of the bifocal contact lens 10. Can be given to the boundary between). As a result, blurring and ghosting of the image can be suppressed to a minimum, the contrast of the image can be prevented from being lowered, and jumping of the image due to an excessive change in frequency can be suppressed, resulting in a clear image. Can be secured.
- the upper end point A side force the lower end point B side, the distance portion 12, the intermediate portion 14, and the near portion 13 are sequentially arranged. Therefore, the distance portion 12 is necessary for the far vision (upper portion of the lens optical region 11), and the near portion 13 is necessary for the near vision (lower portion of the lens optical region 11). Can be set widely. As a result, it is possible to obtain a bifocal contact lens 10 with good visual acuity assist efficiency.
- FIG. 10 is a front view showing a modified example of the bilateral contact lens of FIG.
- the same parts as those in the first and second embodiment contact lenses 10 are denoted by the same reference numerals, and the description thereof is omitted.
- the predetermined direction of the lens optical region 11 in which the distance portion 12, the intermediate portion 14, and the near portion 13 are sequentially arranged is the longitudinal direction of the eye 1 (vertical The direction of the optical axis of the lens 11 coincides with the direction N), and the direction of the tilt axis K is tilted from the N direction of the vertical axis toward the nose side of the face. Therefore, the upper end point A and the lower end point B of the lens optical region 11 are set on the tilt axis K.
- the prism ballast 17 is provided on the lower end point BB side on the vertical axis N in the lens optical region 11.
- the near portion 12 can cope well with the characteristics of eyes that are congested in vision.
- a larger portion of the pupil 3 of the eye 1 is associated with the near vision portion 13 of the bifocal contact lens 10, so this pupil 3 is used for the near vision of the bifocal contact lens 10.
- Even more light that has passed through the section 13 can be captured, and a clear near vision image can be secured.
- the same effects as the effects (1) to (4) described above are obtained.
- FIG. 11 is a front view showing another modified example of the bi-directional contact lens of FIG. this Also in other modified examples, the same parts as those in the first and second embodiment contact lenses 10 are denoted by the same reference numerals, and the description thereof is omitted.
- a perspective contact lens 40 according to another modification is different from the perspective contact lens 10 of the first embodiment in that the rotation prevention mechanism is different.
- the slab-off portions 41 and 42 are formed by notching both end portions in the vertical direction N direction of the portion 15!
- the slab-off 41, 42 is suppressed to the upper eyelid 5 and the lower eyelid 6, respectively, thereby preventing the bifocal contact lens 40 from rotating.
- the slab-offs 41 and 42 may be formed only at one end of the flange portion 15 in the far and near contact lens 40. Therefore, the other modified examples also have the same effects as the effects (1) to (4) of the far and near contact lens 10 according to the first embodiment.
- the bifocal contact lens 10 is provided on at least one of the convex surface 16A or the concave surface 16B (usually the convex surface 16A) of the lens optical region 11 as in the case of the first embodiment.
- a frequency distribution according to equation (1) is set along the vertical axis N direction of area 11, and the astigmatism power is set on the same convex surface 16A and concave surface 16B (usually convex surface 16A) when this frequency distribution is set. Is done.
- This astigmatism power is set along the horizontal axis M direction orthogonal to the vertical axis N direction where the frequency distribution of the equation (1) is set.
- the distance vision 12 and the distance portion 13 based on the frequency distribution set according to the equation (1)
- it can also function to correct astigmatism (especially astigmatism and direct astigmatism).
- the near / far contact lens 10 has a formula (1) along the longitudinal N direction of the lens optical region 11 on one of the convex surface 16A or the concave surface 16B of the lens optical region 11 (usually the convex surface 16A). ), And the other of the convex surface 16A or the concave surface 16B (usually concave surface 16B) is formed as a toric surface having an astigmatism correction function.
- This toric surface is shaped like an astigmatic cornea 2 in the lens wearer's eye 1. Correspondingly formed.
- the cornea 2 in the astigmatic state is different in the radius of curvature of the two orthogonal axes
- the toric surface formed on the concave surface 16B in the lens optical region 11 of the far and near contact lens 10 is in the above astigmatic state.
- the shape of the cornea 2 it has two orthogonal axes with different radii of curvature.
- the near / far contact lens 10 in the third embodiment conforms to the convex surface 16A of the lens optical region 11 along the longitudinal axis N direction of the lens optical region 11 according to the equation (1). Since the frequency distribution is set and the concave surface 16B is formed as a toric surface having an astigmatism correction function, this toric surface may have an astigmatism correction function regardless of the frequency distribution according to the equation (1). it can. Therefore, the toric surface of the concave surface 16B can exhibit an astigmatism correction function for almost all astigmatism such as astigmatism, direct astigmatism, and oblique astigmatism.
- the concave surface 16B is a toric surface formed corresponding to the shape of the cornea 2 in the astigmatic state
- the concave surface 16B is Wearing it on the cornea 2 of the eye 1 of the lens wearer can exhibit an astigmatism correction function, and can also exhibit a rotation prevention function of the bilateral contact lens 10.
- an anti-rotation mechanism such as prism ballast 17 or slab-off 41, 42 on the end side along the longitudinal axis N of the lens optical region 11 of the bilateral contact lens 10
- the rotation by the toric surface described above is also possible. Due to the synergistic effect with the prevention function, the prevention of the rotation of the far and near contact lens 10 can be realized more effectively.
- an intraocular lens that is incorporated into the eye which describes the case where the ophthalmic lens is a contact lens, It may be a spectacle lens of spectacles mounted away from the cornea 2.
- FIG. 1 is a front view showing a bifocal contact lens which is a first embodiment of an ophthalmic lens according to the present invention.
- FIG. 2 is a cross-sectional view taken along the line ⁇ - ⁇ in FIG.
- FIG. 3 shows a lens optical region of the bifocal contact lens of FIG. 1, where (A) is a front view and (B) is a side view.
- FIG. 4 is a perspective view showing the shape of the lens optical region in FIG. 3.
- FIG. 4 is a perspective view showing the shape of the lens optical region in FIG. 3.
- FIG. 5 is a graph showing a power distribution (when the distance portion is a negative power) in the lens optical region of FIG.
- FIG. 6 is a graph showing the power distribution in the lens optical region of FIG. 3 (when the distance portion has a positive power).
- FIG. 7 is a perspective view showing a manufacturing process of the bilateral contact lens of FIG.
- FIG. 8 is a perspective view showing another manufacturing process of the bifocal contact lens of FIG. 1.
- FIG. 9 is a side view showing the use state of the bilateral contact lens of FIG. 1 together with the eyeball.
- FIG. 10 is a front view showing a modification of the far and near contact lens shown in FIG. 1.
- FIG. 11 is a front view showing another modified example of the far and near contact lens of FIG. 1.
- a front view of a conventional bilateral contact lens that shows a concentric frequency distribution with a simultaneous viewing type.
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- Ophthalmology & Optometry (AREA)
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- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/921,447 US7819523B2 (en) | 2005-06-03 | 2006-05-31 | Ocular lens |
JP2007519034A JP4807801B2 (ja) | 2005-06-03 | 2006-05-31 | 累進多焦点コンタクトレンズの設計方法 |
EP06756805.5A EP1901108B1 (en) | 2005-06-03 | 2006-05-31 | Eye-use lens |
CN200680019554XA CN101208628B (zh) | 2005-06-03 | 2006-05-31 | 眼用透镜 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-164164 | 2005-06-03 | ||
JP2005164164 | 2005-06-03 |
Publications (1)
Publication Number | Publication Date |
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WO2006129707A1 true WO2006129707A1 (ja) | 2006-12-07 |
Family
ID=37481636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/310872 WO2006129707A1 (ja) | 2005-06-03 | 2006-05-31 | 眼用レンズ |
Country Status (5)
Country | Link |
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US (1) | US7819523B2 (ja) |
EP (1) | EP1901108B1 (ja) |
JP (1) | JP4807801B2 (ja) |
CN (1) | CN101208628B (ja) |
WO (1) | WO2006129707A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010508561A (ja) * | 2006-10-30 | 2010-03-18 | ジョンソン・アンド・ジョンソン・ビジョン・ケア・インコーポレイテッド | 多焦点コンタクトレンズの設計方法 |
JP2014085678A (ja) * | 2012-10-26 | 2014-05-12 | Johnson & Johnson Vision Care Inc | フィット特性が改善されたコンタクトレンズ |
JP2014525601A (ja) * | 2011-08-26 | 2014-09-29 | ジョンソン・アンド・ジョンソン・ビジョン・ケア・インコーポレイテッド | 並進型老眼用コンタクトレンズ対 |
WO2018138931A1 (ja) | 2017-01-24 | 2018-08-02 | Hoya株式会社 | 眼用レンズ、その設計方法、その製造方法、および眼用レンズセット |
JP2019144278A (ja) * | 2017-12-28 | 2019-08-29 | ホヤ レンズ タイランド リミテッドHOYA Lens Thailand Ltd | 累進屈折力レンズおよび累進屈折力レンズを製造するための方法 |
JP2020510244A (ja) * | 2017-01-06 | 2020-04-02 | アイブレイン メディカル インコーポレイテッド | プリズムコンタクトレンズ |
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WO2018138931A1 (ja) | 2017-01-24 | 2018-08-02 | Hoya株式会社 | 眼用レンズ、その設計方法、その製造方法、および眼用レンズセット |
KR20190104309A (ko) | 2017-01-24 | 2019-09-09 | 호야 가부시키가이샤 | 안용 렌즈, 그 설계 방법, 그 제조 방법, 및 안용 렌즈 세트 |
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JP2019144278A (ja) * | 2017-12-28 | 2019-08-29 | ホヤ レンズ タイランド リミテッドHOYA Lens Thailand Ltd | 累進屈折力レンズおよび累進屈折力レンズを製造するための方法 |
WO2020075312A1 (ja) | 2018-10-11 | 2020-04-16 | Hoya株式会社 | 眼用レンズ、その設計方法、その製造方法、および眼用レンズセット |
KR20210070237A (ko) | 2018-10-11 | 2021-06-14 | 호야 가부시키가이샤 | 안용 렌즈, 그 설계 방법, 그 제조 방법, 및 안용 렌즈 세트 |
Also Published As
Publication number | Publication date |
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US20090303433A1 (en) | 2009-12-10 |
CN101208628A (zh) | 2008-06-25 |
JP4807801B2 (ja) | 2011-11-02 |
JPWO2006129707A1 (ja) | 2009-01-08 |
EP1901108A1 (en) | 2008-03-19 |
EP1901108B1 (en) | 2020-09-09 |
CN101208628B (zh) | 2011-05-18 |
EP1901108A4 (en) | 2009-06-10 |
US7819523B2 (en) | 2010-10-26 |
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