Abstract: The present disclosure is directed to contact lenses configured to prevent or slow development of myopia. In some embodiments, a contact lens for slowing the progression of myopia includes a circular first zone extending from an optical center of the contact lens to a first boundary. The first zone has a first visible light transmission profile. The contact lens includes an annular second zone abutting the first zone at the first boundary. The annular second zone at least partially surrounds the first zone and extends from the first boundary to a second boundary. The second zone has the same dioptric power as a dioptric power of the first zone. The second zone has a second visible light transmission profile that is different than the first transmission profile and is a blue light transmission profile.

Abstract: Certain aspects of the present disclosure provide a contact lens with a stepped-transition diffractive design. An example contact lens has an optical zone on its anterior or posterior surface. The optical zone has a circular diffractive zone that has a stepped-transition diffractive surface profile that provides at least one first refractive optical element and at least one diffractive optical element and optionally an annular refractive zone comprising a second refractive optical element. The at least one diffractive optical element comprises a plurality of concentric annular transition surface zones surrounding a central circular area of the contact lens. The stepped-transition surface profile has a monotonically increasing surface sagitta (SAG) in a direction radiating from the central axis of the contact lens.

Abstract: The invention provides a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.

Abstract: The invention is directed to an embedded hydrogel contact lens, which comprises an insert sandwiched between two layers of hydrogel materials and can be produced according to a cast molding method including the procedures involving two females halves (FC1 and FC2) and two male halves (BC1 and BC2) and three consequential molding steps involving three molding assemblies: the 1st one formed between FC1 and BC1 for molding an insert; the 2nd one formed between FC1 and BC2 for molding a lens precursor having the molded insert embedded in a layer of a hydrogel material in a way that the front surface of the molded insert merges with the convex surface of the lens precursor; and the 3rd one formed between FC2 and BC2 for molding an embedded hydrogel contact of the invention.

Abstract: The invention provides a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.

Abstract: The invention is directed to an embedded hydrogel contact lens, which comprises an insert sandwiched between two layers of hydrogel materials and can be produced according to a cast molding method including the procedures involving two females halves (FC1 and FC2) and two male halves (BC1 and BC2) and three consequential molding steps involving three molding assemblies: the 1st one formed between FC1 and BC1 for molding an insert; the 2nd one formed between FC1 and BC2 for molding a lens precursor having the molded insert embedded in a layer of a hydrogel material in a way that the front surface of the molded insert merges with the convex surface of the lens precursor; and the 3rd one formed between FC2 and BC2 for molding an embedded hydrogel contact of the invention.

Abstract: A bi-layer contact lens having an insert embedded in a bulk hydrogel material. The insert comprises at least one peripheral edge, wherein the peripheral edge of the insert is configured to provide improved lens performance by selective application of at least one design parameter selected from width, angle, shape configuration, and combinations thereof the peripheral edge of the insert.

Abstract: An embedded contact lens that comprises a lens body that has an anterior surface and an opposite posterior surface. The lens body is composed of a bulk hydrogel material and a circular insert embedded in the bulk hydrogel material and comprises an annular mask on the anterior surface or the posterior surface of the lens body. The circular insert comprises a peripheral edge. Both the annular mask and the insert are concentric with a central axis of the lens body. The annular mask is an opaque colored area that covers or overlaps the peripheral edge of the circular insert to minimize or eliminate optical disturbances induced by peripheral edge of the circular insert.

Abstract: The invention provides a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.

Abstract: The invention is directed to an embedded hydrogel contact lens, which comprises an insert sandwiched between two layers of hydrogel materials and can be produced according to a cast molding method including the procedures involving two females halves (FC1 and FC2) and two male halves (BC1 and BC2) and three consequential molding steps involving three molding assemblies: the 1st one formed between FC1 and BC1 for molding an insert; the 2nd one formed between FC1 and BC2 for molding a lens precursor having the molded insert embedded in a layer of a hydrogel material in a way that the front surface of the molded insert merges with the convex surface of the lens precursor; and the 3rd one formed between FC2 and BC2 for molding an embedded hydrogel contact of the invention.

Abstract: A hybrid diffractive and refractive contact lens, and methods of treatment of optical conditions using such a lens. A first lens portion is formed from a first lens material having a first index of refraction and includes at least one diffractive optical element. A second lens portion is formed from a second lens material having a second index of refraction different from the first index of refraction. The diffractive optical element may be embedded within the second lens portion to provide comfort, tear film stability, and optical performance.

Abstract: A hybrid diffractive and refractive contact lens, and methods of treatment of optical conditions using such a lens. A first lens portion is formed from a first lens material having a first index of refraction and includes at least one diffractive optical element. A second lens portion is formed from a second lens material having a second index of refraction different from the first index of refraction. The diffractive optical element may be embedded within the second lens portion to provide comfort, tear film stability, and optical performance.

Abstract: The present invention general related to a method and a reusable mold for making a contact lens, comprising a first mold half having a first mold surface in contact with a hydrogel contact lens forming composition and a second mold half having a second mold surface in contact with the lens forming composition, wherein the first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface, wherein the cavity defines the shape of a contact lens to be molded, wherein the lens forming composition is polymerizable and/or crosslinkable by an actinic radiation, wherein at least one of the mold halves having an absorbing antireflective coating, wherein the reusable mold is a non-plastic mold.

Abstract: The present invention general related to a method and a reusable mold for making a contact lens, comprising a first mold half having a first mold surface in contact with a hydrogel contact lens forming composition and a second mold half having a second mold surface in contact with the lens forming composition, wherein the first mold half and the second mold half are configured to receive each other such that a cavity is formed between the first mold surface and the second mold surface, wherein the cavity defines the shape of a contact lens to be molded, wherein the lens forming composition is polymerizable and/or crosslinkable by an actinic radiation, wherein at least one of the mold halves having an absorbing antireflective coating, wherein the reusable mold is a non-plastic mold.

Abstract: A method for automatically measuring and quantitatively evaluating the optical quality of an ophthalmic lens, such as, for example, a contact lens. The method measures an ophthalmic lens with an optical phase measurement instrument to derive measured data. The method creates a set of objective optical quality metrics within a computational software. And, the method applies the measured data to at least one of the objective optical quality metrics to determine lens quality.