Contact lens package
AssigneeCooperVision International Holding Company, LP
InventorsPete Coldrey, Jamie Snell
Life of this patent
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Abstract
A blister package housing a contact lens is described. The package generally includes a base member including a cavity having a bottom surface, for containing a contact lens immersed in a liquid medium. The base member can include a grip region including a curved top surface shaped to accommodate a thumb and a curved bottom surface shaped to accommodate an inner curve of a forefinger. Silicone hydrogel contact lenses located in the liquid medium have a reduced tendency to stick to the bottom surface of the cavity without requiring a surfactant and/or a surface modification of the bottom surface.
Claims19
A contact lens package, comprising
- a base member comprising a hydrophobic material and having a bottom surface and a sidewall contacting the bottom surface to form a cavity;
- a liquid medium located in the cavity;
- and
- a silicone hydrogel contact lens without a surface treatment, having an advancing contact angle of less than 66° and located in the liquid medium, the silicone hydrogel contact lens comprising a material effective in reducing the tendency for the lens to stick to the bottom surface of the cavity without requiring an anti-attachment agent selected from the group consisting of a surfactant, a surface modification of the bottom surface, and a combination of a surfactant and a surface modification of the bottom surface, to reduce the tendency of the lens to stick to the bottom surface.
Dependencies are inferred from the claim text.