Disclosed is a medical device having an elastic modulus of 100 kPa or more and 2,000 kPa or less, a water content of 10% by mass or less, a tensile elongation of 50% or more and 3,000% or less, and a dynamic contact angle (advancing angle) relative to a borate buffer of 80 or less. The present invention can significantly reduce or avoid a phenomenon of adhesion to a surface when contacted with a surface outside or inside the body, which has hitherto been regarded as a problem in a conventional medical device.

A spectacle lens according to the first embodiment of the present disclosure includes: a lens body; and a contrast adjustment section provided on or in the lens body and including a dot-portion group in which dot portions are arranged, wherein the arrangement of the dot portions is non-uniform. A spectacle lens according to the second embodiment of the present disclosure includes: a lens body; and a contrast adjustment section provided on or in the lens body and including a dot-portion group in which dot portions are arranged, wherein the dot-portion group includes dot portions each having an aspect ratio, which is the ratio of the length in the short-axis direction to the length in the long-axis direction in the plan-view shape, of less than 1.

An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.

A vision apparatus implemented as an optical device is disclosed. The optical device comprises a plurality of small apertures in an opaque material that is attached to a pair of eyeglasses or is a contact lens. The number and arrangement of small apertures defines the field of view and brightness of the image projected onto the user's retina. The opaque material is a collimator, and only small areas of the user's retina are illuminated by cones of light passing through the small apertures. Therefore, all of the light is rendered in focus. The optical device resolves the refractive errors of the eye of the user, improving the visual acuity of the user in any activity that requires depth of field with a large and bright field of view. Two optical devices, one for each eye, provide binocular vision with a variety of aperture arrangements to suit the user's needs.

Proposed are pinhole glasses, which include a spectacle frame; spectacle lenses coupled to the frame; and temple bars hinged to both sides of the frames to be attached to the ears, wherein the pinhole part in which a plurality of pinholes are formed is detachably coupled to the frame inside the spectacle lenses. The pinhole glasses can be worn in everyday life. Smartphone, computer monitor, or fine print can be clearly seen through the glasses. In addition, the speaker formed on the temple bar of the glasses can replace earphones, so that it is possible to listen to various acoustic sounds by interlocking with a smartphone.

A mask is provided that is configured to increase the depth of focus of a patient. The mask can include an aperture configured to transmit along an optical axis substantially all visible incident light. The mask can further include a portion surrounding at least a portion of the aperture. The portion may be configured to be substantially opaque to visible electromagnetic radiation and be substantially transparent to electromagnetic radiation transmitted from an ocular examination device (e.g., substantially transparent to at least some non-visible electromagnetic radiation with a wavelength between about 750 nm and about 1500 nm).

An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.

A mask is provided that is configured to increase the depth of focus of a patient. The mask can include an aperture configured to transmit along an optical axis substantially all visible incident light. The mask can further include a portion surrounding at least a portion of the aperture. The portion may be configured to be substantially opaque to visible electromagnetic radiation and be substantially transparent to electromagnetic radiation transmitted from an ocular examination device (e.g., substantially transparent to at least some non-visible electromagnetic radiation with a wavelength between about 750 nm and about 1500 nm).

An ophthalmic lens that includes a lens material having two opposing curved surfaces, the curved surfaces defining a lens axis; and a light scattering region surrounding a clear aperture. The clear aperture and the light scattering region are substantially centered on the lens axis, and the light scattering region has a plurality of spaced apart scattering centers (e.g., on a lens surface and/or embedded in the lens material) sized and shaped to scatter incident light, the scattering centers being arranged in a pattern that includes a random variation in spacing between adjacent dots and/or a random variation in dot size.

A vision apparatus implemented as an optical device is disclosed. The optical device comprises a plurality of small apertures in an opaque material that is attached to a pair of eyeglasses or is a contact lens. The number and arrangement of small apertures defines the field of view and brightness of the image projected onto the user's retina. The opaque material is a collimator, and only small areas of the user's retina are illuminated by cones of light passing through the small apertures. Therefore, all of the light is rendered in focus. The optical device resolves the refractive errors of the eye of the user, improving the visual acuity of the user in any activity that requires depth of field with a large and bright field of view. Two optical devices, one for each eye, provide binocular vision with a variety of aperture arrangements to suit the user's needs.