Abstract: In a first aspect, a pair of eyeglasses is provided and includes a lens and frame assembly that includes at least one lens, a first temple and a second temple, and a hinge structure pivotally connecting each temple to the lens and frame assembly. The hinge structure includes two first projections which are spaced apart from one another. Each first projection has a first pivot member thereon. The first projections extend from one of said temple and said lens and frame assembly. The other of said temple and said lens and frame assembly has two second pivot members that pivotally mate with the first pivot members. The first projections are resiliently flexible for movement between a use position in which the first pivot members are pivotally mated with the second pivot members, and a disengagement position in which the first pivot members are withdrawn from the second pivot members so as to permit the temple and the lens and frame assembly to be separated from one another.

Abstract: In a first aspect, a pair of eyeglasses is provided and includes a lens and frame assembly that includes at least one lens, a first temple and a second temple, and a hinge structure pivotally connecting each temple to the lens and frame assembly. The hinge structure includes two first projections which are spaced apart from one another. Each first projection has a first pivot member thereon. The first projections extend from one of said temple and said lens and frame assembly. The other of said temple and said lens and frame assembly has two second pivot members that pivotally mate with the first pivot members. The first projections are resiliently flexible for movement between a use position in which the first pivot members are pivotally mated with the second pivot members, and a disengagement position in which the first pivot members are withdrawn from the second pivot members so as to permit the temple and the lens and frame assembly to be separated from one another.

Abstract: An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring pressure within the eye; and a tonometer hands free holder adapted to secure the tonometer device over the eye whilst measuring the pressure within the eye.

Abstract: A progressive spectacle lens design has clear focal properties in the entire lens, and progressive variation in focal properties from the center of the lens down into a reading area. All current conventional progressive lenses have areas of distortion to the side of the reading area. The present invention provides undistorted optical viewing throughout the entire lens, although the focal length varies.

Abstract: An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring pressure within the eye; and a tonometer hands free holder adapted to secure the tonometer device over the eye whilst measuring the pressure within the eye.

Abstract: An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring pressure within the eye; and a tonometer hands free holder adapted to secure the tonometer device over the eye whilst measuring the pressure within the eye.

Abstract: A progressive spectacle lens design has clear focal properties in the entire lens, and progressive variation in focal properties from the center of the lens down into a reading area. All current conventional progressive lenses have areas of distortion to the side of the reading area. The present invention provides undistorted optical viewing throughout the entire lens, although the focal length varies.

Abstract: An applanation tonometer, for measuring pressure within a human eye, the tonometer comprising an electrical measurement apparatus which detects the mechanical displacement of a plunger, the displacement of the plunger provided by means applied pressure to the eye, the electrical measurement apparatus converting the corresponding mechanical displacement of the plunger into an electrical signal, the electrical signal corresponding to ocular pressure within the eye and displayed on an electrical display device.

Abstract: An applanation tonometry system, for measuring pressure within an eye, the tonometry system comprising: an applanation tonometer device for providing specific applanation pressure to a plurality of locations on an eye; an electrical process controller for measuring pressure within the eye; and a tonometer hands free holder adapted to secure the tonometer device over the eye whilst measuring the pressure within the eye.

Abstract: A tonometer, for determining intraocular pressure, has a body, which can be a transparent, substantially tubular body. A plunger is located within the body and a coil spring acts between the body and the plunger. A marker member is frictionally retained within the body and is displaced relative to an external scale on the body. In use, the tonometer is brought up against the eyelid of a closed eye and the body displaced relative to the head of the plunger, until the pressure is sufficient to create a pressure phosphene. The device is then removed and the displacement of the marker member, indicative of the applied pressure is read. This reading corresponds to the intraocular pressure.