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WO2025142986A1 - Boîtier de lentille de contact - Google Patents

Boîtier de lentille de contact Download PDF

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Publication number
WO2025142986A1
WO2025142986A1 PCT/JP2024/045828 JP2024045828W WO2025142986A1 WO 2025142986 A1 WO2025142986 A1 WO 2025142986A1 JP 2024045828 W JP2024045828 W JP 2024045828W WO 2025142986 A1 WO2025142986 A1 WO 2025142986A1
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WO
WIPO (PCT)
Prior art keywords
contact lens
less
package
lid member
meth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/045828
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English (en)
Japanese (ja)
Inventor
啓貴 河野
佳弘 伴野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Menicon Co Ltd
Original Assignee
Menicon Co Ltd
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Filing date
Publication date
Application filed by Menicon Co Ltd filed Critical Menicon Co Ltd
Publication of WO2025142986A1 publication Critical patent/WO2025142986A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/22—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient in moist conditions or immersed in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/38—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for delicate optical, measuring, calculating or control apparatus
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C11/00—Non-optical adjuncts; Attachment thereof
    • 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

Definitions

  • the present invention relates to a contact lens package.
  • Conventional disposable contact lenses are generally made up of a cover material and a base material, and are stored in a lens storage space of a package that is higher than the natural sagittal height of the contact lens, together with a storage solution.
  • the main objective of the present invention is to improve the difficulty of seeing when a contact lens is removed from a thin contact lens package and first worn.
  • a contact lens package comprising a package having a lid member and a bottom member, and a contact lens contained in a deformed state in a storage space sealed by the lid member and the bottom member, wherein the contact lens has a relaxation modulus of 1.6 MPa or less, and the relaxation modulus of the contact lens is the modulus of elasticity 1 second after the start of measurement when a contact lens piece is subjected to a strain of 75% of the upper limit of a linear elastic region in a tensile test in an aqueous medium at 35°C and at the same time measurement of the stress required to hold the contact lens piece is started.
  • the contact lens may have a tensile loss tangent of 0.14 or less, as determined by dynamic tensile viscoelasticity measurement in an aqueous medium at 35°C.
  • the contact lens may have a relaxation modulus of 1.3 MPa or less.
  • a contact lens package comprising: a package having a lid member and a bottom member; and a contact lens contained in a deformed state in a storage space sealed by the lid member and the bottom member, wherein the tensile loss tangent of the contact lens, as determined by dynamic tensile viscoelasticity measurement in an aqueous medium at 35°C, is 0.1 or less.
  • the contact lens may have a tensile loss tangent of 0.06 or less.
  • the contact lens may have a relaxation modulus of 1.8 MPa or less, and the relaxation modulus of the contact lens is the modulus of elasticity measured 1 second after a contact lens piece is subjected to a strain of 75% of the upper limit of the linear elastic region in a tensile test in an aqueous medium at 35°C and the measurement of the stress required to hold the contact lens piece is started at the same time.
  • a contact lens package comprising a package having a lid member and a bottom member, and a contact lens contained in a deformed state in a storage space sealed by the lid member and the bottom member, wherein the tensile loss tangent of the contact lens, as determined by dynamic tensile viscoelasticity measurement in an aqueous medium at 35°C, is 0.1 or less, and the relaxation modulus of the contact lens is 1.6 MPa or less, and the relaxation modulus of the contact lens is the modulus of elasticity measured 1 second after the start of measurement when a contact lens piece is subjected to a strain of 75% of the upper limit of a linear elastic region in a tensile test in an aqueous medium at 35°C and simultaneously measurement of the stress required to hold the contact lens piece is started.
  • the contact lens in the contact lens package according to any one of [1] to [11] above, the contact lens may be accommodated in the accommodation space with its height smaller than its natural sagittal height. [13] In the contact lens package according to any one of [1] to [12] above, the height of the storage space may be 2 mm or less.
  • a method for improving recovery from wrinkles in a contact lens when a contact lens package is opened comprising: producing a contact lens package by bonding a lid member and a base member opposed to each other so as to form a sealed storage space in which a contact lens is placed, wherein the height of the storage space is smaller than the natural sagittal height of the contact lens, and the contact lens has a relaxation modulus of 1.6 MPa or less, and the relaxation modulus of the contact lens is the elastic modulus 1 second after the start of measurement when a contact lens piece is subjected to a strain of 75% of the upper limit of a linear elastic region in a tensile test in an aqueous medium at 35°C and simultaneously measurement of the stress required to hold the contact lens piece is started.
  • a method for suppressing the occurrence of wrinkles in a contact lens in a contact lens package comprising: producing a contact lens package by bonding a lid member and a base member opposed to each other so as to form a sealed storage space in which a contact lens is placed, wherein the height of the storage space is smaller than the natural sagittal height of the contact lens, and at least one of the following is satisfied: (i) the tensile loss tangent of the contact lens, as determined by dynamic tensile viscoelasticity measurement in an aqueous medium at 35°C, is 0.1 or less; and (ii) the ratio of energy released for shrinking the contact lens from a stretched state to a stretch ratio of 0% to energy absorbed when the contact lens is stretched to a stretch ratio of 100% in an aqueous medium at 35°C is 90% or more.
  • a contact lens package including a package having a lid member and a bottom member, and a contact lens accommodated in a storage space sealed by the lid member and the bottom member, the storage space being defined by a convex curved surface portion of the lid member protruding toward the bottom member and a concave curved surface portion of the bottom member protruding on the side opposite to the lid member, and configured such that the contact lens adheres to the lid member or the bottom member when the package is opened, and the package satisfies at least one of the following: (i) the relaxation modulus of the contact lens is 1.6 MPa or less, and the relaxation modulus of the contact lens is the modulus of elasticity 1 second after the start of measurement when a contact lens piece is subjected to a strain of 75% of the upper limit of a linear elastic region in a tensile test in an aqueous medium at 35°C and measurement of the stress required to hold the contact lens piece is started at the same time
  • a contact lens having predetermined physical properties is used as the contact lens contained in the thin package. This can improve the initial discomfort in vision after wearing the contact lens, even if the contact lens is taken out of the thin package and worn immediately.
  • the thin contact lens package according to the embodiment of the present invention also contributes to the 17 goals and 169 targets of the SDGs (Sustainable Development Goals), particularly "12. responsible consumption and production” and “14. Protect and sustainably use the oceans and seas.”
  • SDGs Stustainable Development Goals
  • FIG. 1A is a schematic top view of a contact lens package according to one embodiment of the present invention.
  • FIG. 1B is a schematic bottom view of the contact lens package shown in FIG. 1A.
  • FIG. 1C is a schematic cross-sectional view of the contact lens package shown in FIG. 1A taken along line AA.
  • FIG. 1D is an exploded perspective view of the contact lens package shown in FIG. 1A.
  • FIG. 2 is a schematic perspective view of an example of a package in an opened state.
  • FIG. 3 is a diagram illustrating the natural sagittal height of a contact lens.
  • FIG. 4A is a schematic cross-sectional view of a lens-loading substrate used in the contact lens package shown in FIG. 1A.
  • FIG. 4A is a schematic cross-sectional view of a lens-loading substrate used in the contact lens package shown in FIG. 1A.
  • FIG. 4B is a schematic cross-sectional view of an example lens-bearing substrate.
  • FIG. 5 is a schematic cross-sectional view of a contact lens package according to one embodiment of the present invention.
  • FIG. 6 is a schematic cross-sectional view of the bottom member of the contact lens package shown in FIG.
  • FIG. 7 is a schematic cross-sectional view of a contact lens package according to one embodiment of the present invention.
  • 8A is a schematic cross-sectional view of a cover member of the contact lens package shown in FIG. 7, and
  • FIG. 8B is a schematic cross-sectional view of a bottom member of the contact lens package shown in FIG.
  • FIG. 9 is a diagram for explaining a method for preparing a measurement sample.
  • FIG. 2A shows the power distribution of a contact lens in which all ring regions have a Q value of 2 or more
  • FIG. 2B shows the power distribution of a contact lens in which all ring regions have a Q value of 2 or less.
  • the surface of a contact lens that comes into contact with the eye may be referred to as the inner surface, and the opposite surface as the outer surface.
  • “monomer” means a polymerizable compound having one or more polymerizable groups.
  • a preferred example of the polymerizable group is an ethylenically unsaturated group, and the polymerizable group may be, for example, a (meth)acryloyl group, a vinyl group, a styryl group, or an allyl group.
  • (meth) means any methyl substitution.
  • (meth)acryloyl” means methacryloyl and/or acryloyl. The same applies to other descriptions such as "(meth)acrylic".
  • the standard deviation of the diopter distribution in a predetermined area of the contact lens immediately after opening the contact lens package according to the embodiment of the present invention is typically 3 or less, for example 2 or less, preferably 1.5 or less, more preferably 1 or less, and even more preferably 0.5 or less.
  • the lower limit of the standard deviation of the diopter distribution is not particularly limited, but may be, for example, 0.01 or more.
  • a small standard deviation of the diopter distribution means that the diopter unevenness on the contact lens surface is small, and as a result, the above-mentioned discomfort in vision can be reduced.
  • the standard deviation of the diopter distribution can be obtained as a Q value by measurement using, for example, an underwater power meter (manufactured by Visionix, "VC-2001").
  • the predetermined area to be measured for the diopter distribution can be, for example, a ring area within a radius of 5 mm from the center of the contact lens, a spot area within a radius of 5 mm, or a spot area within a radius of 3 mm.
  • the standard deviation of the power distribution in a specified area of the contact lens 900 seconds after opening a contact lens package according to an embodiment of the present invention is typically 3 or less, for example 2 or less, preferably 1.5 or less, more preferably 1 or less, and even more preferably 0.5 or less.
  • the lower limit of the standard deviation of the power distribution is not particularly limited, but may be, for example, 0.01 or more.
  • FIG. 1A is a schematic top view of a contact lens package according to one embodiment of the present invention
  • FIG. 1B is a schematic bottom view of the contact lens package shown in FIG. 1A
  • FIG. 1C is a schematic cross-sectional view of the contact lens package shown in FIG. 1A taken along line A-A
  • FIG. 1D is an exploded perspective view of the contact lens package shown in FIG. 1A.
  • FIG. 2 is a schematic perspective view of an example of a package in an opened state.
  • the contact lens package 200A includes a package 100 having a cover member 10 and a bottom member 20, and a contact lens 120 accommodated in a storage space 110 sealed by the cover member 10 and the bottom member 20.
  • a contact lens storage solution is also accommodated in the storage space 110, thereby maintaining the contact lens 120 in a hydrated state.
  • the contact lens 120 is accommodated in the storage space 110 in a deformed state, specifically, in a state in which its height is smaller than its natural sagittal height, and may be in a state of being crushed flat, for example.
  • the natural sagittal height of the contact lens refers to the height of the outer surface of the lens when the hydrated contact lens is placed with its inner surface facing down on a horizontal surface, and is the height indicated by "T" in Figure 3.
  • the package 100 is composed of a lid member 10 and a bottom member 20.
  • the cover member 10 is made of, for example, a flexible film substrate.
  • Materials that can be used to form the film substrate include inorganic materials such as aluminum, polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and polyamide resins.
  • the film substrate may have a single layer structure or a laminated structure.
  • the film substrate may have a single layer structure made of a resin film (e.g., PP film, PET film) or a metal foil (e.g., aluminum foil).
  • the film substrate may have a two-layer structure including a resin layer (e.g., PP film, PET film) and an aluminum layer (e.g., an aluminum vapor deposition layer) disposed on one side of the resin layer.
  • the film substrate may have a three-layer structure including a first resin layer, an aluminum layer, and a second resin layer.
  • the base member 20 includes a support substrate 22 and a lens-loading substrate 24 disposed on the inner surface of the support substrate 22.
  • the lens-loading substrate 24 is fixed to a predetermined position on the support substrate 22 by, for example, an adhesive.
  • the lens-loading substrate 24 is an optional component and may be omitted depending on the purpose.
  • FIG. 5 is a schematic cross-sectional view showing the configuration of a contact lens package according to another embodiment of the present invention.
  • the contact lens package 200B includes a package 100 having a cover member 10 and a bottom member 20, and a contact lens 120 accommodated in a storage space 110 sealed by the cover member 10 and the bottom member 20.
  • a contact lens storage solution is also accommodated in the storage space 110, thereby maintaining the contact lens 120 in a hydrated state.
  • the contact lens 120 is accommodated in the storage space 110 in a deformed state, specifically, in a state in which its height is smaller than its natural sagittal height, and may be in a state of being squashed flat, for example.
  • hydroxyl group-containing monomers include hydroxyl group-containing alkyl (meth)acrylates, specific examples of which include hydroxyl group-containing alkyl (meth)acrylates having an alkyl group of 1 to 4 carbon atoms, such as hydroxymethyl (meth)acrylate, hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, hydroxybutyl (meth)acrylate, dihydroxyethyl (meth)acrylate, dihydroxypropyl (meth)acrylate, and dihydroxybutyl (meth)acrylate, and glyceryl (meth)acrylate.
  • hydroxyl group-containing alkyl (meth)acrylates specific examples of which include hydroxyl group-containing alkyl (meth)acrylates having an alkyl group of 1 to 4 carbon atoms, such as hydroxymethyl (meth)acrylate, hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, hydroxybutyl
  • Examples of the carboxyl group-containing monomer include (meth)acrylic acid, itaconic acid, maleic acid, fumaric acid, and crotonic acid, and acid anhydrides thereof can also be preferably used.
  • Examples of the nitrogen atom-containing monomer include (meth)acrylamides such as N,N-dimethyl(meth)acrylamide, N-ethyl(meth)acrylamide, N-2-hydroxyethyl(meth)acrylamide, and N-isopropyl(meth)acrylamide; N-vinyllactams such as N-vinylpyrrolidone, N-vinylpiperidone, and N-vinylcaprolactam; N-methyllactams such as 1-methyl-3-methylene-2-pyrrolidinone; (meth)acrylonitrile; and N-(meth)acryloylmorpholine.
  • alkoxyl group-containing monomers include alkoxyalkyl (meth)acrylates, specific examples of which include alkoxyalkyl (meth)acrylates in which the alkoxyalkyl group has 2 to 4 carbon atoms, such as methoxymethyl (meth)acrylate, methoxyethyl (meth)acrylate, ethoxymethyl (meth)acrylate, and ethoxyethyl (meth)acrylate.
  • crosslinkable monomer a polyfunctional monomer having two or more polymerizable groups (excluding those having a siloxane bond) can be used.
  • a crosslinkable monomer in the monomer component a polymer material having the desired physical properties (flexibility, mechanical strength, relaxation modulus, tan ⁇ , etc.) can be suitably obtained.
  • crosslinkable monomers include butanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, diallyl fumarate, allyl (meth)acrylate, vinyl (meth)acrylate, trimethylolpropane tri(meth)acrylate, methacryloyloxyethyl (meth)acrylate, divinylbenzene, diallyl phthalate, diallyl adipate, triallyl diisocyanate, ⁇ -methylene-N-vinylpyrrolidone, 4-vinylbenzyl (meth)acrylate, 3-vinyl
  • the acryloyloxyphenyl di(meth)acrylate include 2,2-bis((meth)acryloyloxyphenyl)hexafluoroprop
  • butanediol di(meth)acrylate and ethylene glycol di(meth)acrylate are preferably used because they have excellent copolymerizability and can easily adjust the flexibility and mechanical strength of the polymer material.
  • the crosslinking monomers can be used alone or in combination of two or more.
  • hydrophobic monomer monofunctional monomers without polar groups (excluding those with siloxane bonds), such as alkyl (meth)acrylates, fluorine-containing alkyl (meth)acrylates, aromatic ring-containing (meth)acrylates, and styrene-based monomers, can be preferably used.
  • a hydrophobic monomer in the monomer component a polymer material having the desired mechanical strength, water content, etc. can be suitably obtained. Only one type of hydrophobic monomer can be used alone, or two or more types can be used in combination.
  • the solubility of the hydrophobic monomer in water at 25°C may be, for example, less than 0.03 g/mL.
  • alkyl (meth)acrylates include alkyl (meth)acrylates in which the alkyl group has 1 to 20 carbon atoms.
  • Specific examples include linear, branched, or cyclic alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, pentyl (meth)acrylate, hexyl (meth)acrylate, heptyl (meth)acrylate, nonyl (meth)acrylate, stearyl (meth)acrylate, octyl (meth)acrylate, decyl (meth)acrylate, lauryl (meth)acrylate, pentadecyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, cyclopentyl (meth)acrylate, and cyclohexyl (meth)acrylate.
  • alkyl (meth)acrylates in which the alkyl group has 1 to 5 carbon atoms are preferred.
  • methyl acrylate has a solubility in water at 25° C. of more than 0.03 g/mL, since it does not have a polar group, it is treated as a hydrophobic monomer in this specification.
  • fluorine-containing alkyl (meth)acrylate include those in which fluorine has been introduced into the alkyl group of the above alkyl (meth)acrylates.
  • Specific examples include 2,2,2-trifluoroethyl (meth)acrylate, 2,2,3,3-tetrafluoropropyl (meth)acrylate, 2,2,3,3-tetrafluoro-t-pentyl (meth)acrylate, 2,2,3,4,4,4-hexafluorobutyl (meth)acrylate, 2,2,3,4,4,4-hexafluoro-t-hexyl (meth)acrylate, 2,3,4,5,5,5-hexafluoro 2,4-bis(trifluoromethyl)pentyl (meth)acrylate, 2,2,3,3,4,4-hexafluorobutyl (meth)acrylate, 2,2,2,2',2',2'-hexafluoroisopropyl (meth)acrylate, 2,2,3,3,4,4,4-heptafluorobutyl (meth)acrylate, 2,2,3,3,4,4,5,5-octafluoropentyl (meth)acrylate,
  • siloxane monomers include trimethylsiloxydimethylsilylmethyl (meth)acrylate, trimethylsiloxydimethylsilylpropyl (meth)acrylate, methylbis(trimethylsiloxy)silylpropyl (meth)acrylate, tris(trimethylsiloxy)silylpropyl (meth)acrylate, mono[methylbis(trimethylsiloxy)siloxy]bis(trimethylsiloxy)silylpropyl (meth)acrylate, tris[methylbis(trimethylsiloxy)siloxy]silylpropyl (meth)acrylate, methylbis(trimethylsiloxy)silylpropyl glyceryl (meth)acrylate, tris(trimethylsiloxy)silylpropyl glyceryl (meth)acrylate, mono[methylbis(trimethylsiloxy)siloxy]bis(trimethylsiloxy)silylpropyl glyceryl (meth)acrylate, mono
  • the mixing ratio of the hydrophilic monomer in the monomer components excluding the crosslinking monomer is, for example, 30% by weight or more, 40% by weight or more, preferably 50% by weight or more, more preferably 60% by weight or more, and may be, for example, 100% by weight or less, or, for example, 95% by weight or less, 90% by weight or less.
  • the proportion of hydrophobic monomer in the monomer components excluding crosslinking monomers is, for example, 5% by weight or less, preferably 3% by weight or less, and may be 0% by weight to 1% by weight.
  • the proportion of the siloxane monomer in the monomer components excluding the crosslinkable monomer is, for example, 60% by weight or less, preferably 50% by weight or less, more preferably 40% by weight or less, and may be 30% by weight or less, 20% by weight or less, or 15% by weight or less.
  • the lower limit of the proportion of the siloxane monomer may be 0% by weight or more, 3% by weight or more, or 5% by weight or more.
  • the proportion of the crosslinkable monomer in the monomer component may be, for example, 0.05% by weight or more, or, for example, 0.1% by weight or more, and typically may be 10% by weight or less, for example, 3% by weight or less, preferably 1% by weight or less, and more preferably 0.8% by weight or less.
  • the physical properties of the contact lens such as mechanical strength, water content, relaxation modulus, tan ⁇ , and resilience
  • the physical properties of the resulting polymer may vary depending on the type of monomer, etc.
  • a contact lens having physical properties such as mechanical strength, water content, relaxation modulus, tan ⁇ , and resilience within the desired range can be preferably obtained.
  • the monomer component may further include a functional monomer.
  • the functional monomer include a polymerizable UV absorber, a polymerizable dye, and a polymerizable UV absorbing dye.
  • various functional monomers are commercially available, and a suitable monomer can be selected from these depending on the purpose.
  • the functional monomer is a monomer that imparts a specific function to the resulting polymer, and is not included in the above-mentioned hydrophobic monomer, hydrophilic monomer, crosslinking monomer, and siloxane monomer.
  • the total blending ratio of functional monomers in the monomer components is, for example, 5% by weight or less, preferably 0.0001% by weight to 5% by weight, and more preferably 0.05% by weight to 3% by weight.
  • the polymerizable composition typically contains a polymerization initiator in addition to the monomer components described above, and may further contain a solvent and/or additives as necessary.
  • additives include cooling agents, thickening agents, surfactants, non-polymerizable dyes, and non-polymerizable ultraviolet absorbers.
  • the mold When polymerizing the polymerizable composition by thermal polymerization, it is preferable to gradually heat the mold after filling or applying the polymerizable composition into the mold.
  • the heating temperature and heating time when heating the polymerizable composition in the mold can be appropriately set depending on the composition of the polymerizable composition, etc.
  • the measurement conditions were as follows.
  • ⁇ Stress relaxation test> The measurement sample was given a strain (initial strain) of 75% of the upper limit of the linear elastic region in the tensile test, and at the same time, measurement of the change (relaxation) in stress required to hold the measurement sample with the initial strain was started.
  • the measurement conditions were as follows.
  • Initial static force The load equivalent to 75% of the linear elastic region was calculated from the Young's modulus and the cross-sectional area of the sample. Dynamic distortion: 2.5%
  • the Q value is a quality factor proportional to the wavefront deformation amount in power units in the analyzed region of the lens, and is a value indicating the standard deviation of the power distribution of the region.
  • a small Q value means that the power unevenness on the lens surface is small. For example, (a) in FIG.
  • Ring area with a radius of 1.5 mm to 5.0 mm from the center of the lens in plan view (specifically, ring area with a radius of 1.5 mm to 2.0 mm, ring area with a radius of 2.0 mm to 2.5 mm, ring area with a radius of 2.5 mm to 3.0 mm, ring area with a radius of 3.0 mm to 4.0 mm, ring area with a radius of 4.0 mm to 5.0 mm).
  • Number of measurements 3 pieces/sample.
  • contact lenses with a tan ⁇ of 0.1 or less achieved a Q value of 2 or less in a ring region with a radius of 1.5 mm to 2.5 mm 15 seconds after removal from a thin package (Experimental Examples 1-3 and 5).
  • the contact lenses of Experimental Examples 3 and 5 prepared using a siloxane monomer had ring regions with Q values exceeding 1 after 15 seconds, whereas the contact lenses of Experimental Examples 1 and 2 prepared without using a siloxane monomer had Q values of 1 or less over the entire ring region after 15 seconds.
  • contact lenses with a small relaxation modulus e.g., relaxation modulus ⁇ 1.6 MPa
  • contact lenses with a small relaxation modulus e.g., relaxation modulus of 1.6 MPa or less or 1.3 MPa or less
  • contact lenses with high resilience e.g., resilience ⁇ 90%
  • a contact lens package was prepared in the same manner as in Experimental Example 1-7 above, using a contact lens prepared by polymerizing a polymerizable composition having the following composition.
  • the power distribution of the obtained contact lens package was evaluated in the same manner as in Experimental Example 1-7, except that a spot region within 3 mm from the center of the lens in a plan view was used as the measurement region. All of the power distributions showed low Q values equal to or lower than those of Experimental Example 1-3.
  • the contact lens packages of Experimental Examples 8-10 can improve the ability to eliminate (recover) wrinkles (deformations) on the contact lens after opening, or suppress the occurrence of wrinkles (deformations) on the contact lens while it is contained in the containment space, thereby improving the initial discomfort of vision after wearing even when the contact lens is taken out of the thin package and worn immediately.
  • the contact lens package according to the embodiment of the present invention can be suitably used in the manufacture and sale of contact lenses.
  • Lid member 20 Bottom member 22: Support substrate 24: Lens-carrying substrate 100: Package 110: Storage space 120: Contact lens 200: Contact lens package

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

Un mode de réalisation de la présente invention concerne un boîtier de lentille de contact comprenant : un boîtier ayant un élément couvercle et un élément inférieur ; et une lentille de contact logée dans un état déformé dans un espace de réception scellé par l'élément couvercle et l'élément inférieur, la lentille de contact ayant un module de relaxation de 1,6 MPa ou moins, et le module de relaxation de la lentille de contact étant le module d'élasticité une seconde après le début de la mesure lorsqu'une pièce de lentille de contact dans un milieu aqueux à une température de 35°C est soumise à une contrainte de 75% par rapport à la limite supérieure d'une région de déformation linéaire dans un test de traction tout en démarrant simultanément la mesure de la contrainte requise pour maintenir la pièce de lentille de contact.
PCT/JP2024/045828 2023-12-27 2024-12-25 Boîtier de lentille de contact Pending WO2025142986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023220877 2023-12-27
JP2023-220877 2023-12-27

Publications (1)

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WO2025142986A1 true WO2025142986A1 (fr) 2025-07-03

Family

ID=96219142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/045828 Pending WO2025142986A1 (fr) 2023-12-27 2024-12-25 Boîtier de lentille de contact

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WO (1) WO2025142986A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003526707A (ja) * 1999-10-07 2003-09-09 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 ソフト・コンタクト・レンズ
WO2012131785A1 (fr) * 2011-03-31 2012-10-04 株式会社メニコン Conditionnement de lentille de contact
JP2022514817A (ja) * 2018-11-30 2022-02-16 メニコン シンガポール ピーティーイー． リミテッド 選択的に濡れやすい、酸素透過性のレンズ
JP2023542580A (ja) * 2020-09-14 2023-10-11 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 ワンタッチコンタクトレンズパッケージ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003526707A (ja) * 1999-10-07 2003-09-09 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 ソフト・コンタクト・レンズ
WO2012131785A1 (fr) * 2011-03-31 2012-10-04 株式会社メニコン Conditionnement de lentille de contact
JP2022514817A (ja) * 2018-11-30 2022-02-16 メニコン シンガポール ピーティーイー． リミテッド 選択的に濡れやすい、酸素透過性のレンズ
JP2023542580A (ja) * 2020-09-14 2023-10-11 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 ワンタッチコンタクトレンズパッケージ

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