Abstract: A contact lens and a contact lens blank having increased dimensional stability are constructed from a copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate, wherein the copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate has either an absolute water balance ratio greater than 8 or a relative water balance ratio greater than 2 relative to a polymer of 2-hydroxyethyl methacrylate.
Type:
Application
Filed:
June 7, 2001
Publication date:
May 16, 2002
Applicant:
Benz Research and Development Corporation
Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
Type:
Application
Filed:
July 6, 2001
Publication date:
May 16, 2002
Applicant:
Benz Research and Development Corporation
Abstract: A one-piece intraocular lens formed from a copolymer of a hydrophilic monomer and an alkoxy-alkylmethacrylate. The intraocular lens is foldable so as to be insertable through a small incision in the eye.
Type:
Application
Filed:
June 6, 2001
Publication date:
March 7, 2002
Applicant:
Benz Research and Development Corporation
Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
Type:
Application
Filed:
June 4, 2001
Publication date:
February 14, 2002
Applicant:
Benz Research and Development Corporation
Abstract: A one piece intraocular lens and an intraocular lens include an optic portion and a haptic portion formed from a copolymer that includes an incorporated hydrophilic monomer and an incorporated alkoxyalkyl methacrylate monomer. The optic and haptic portions of the one-piece intraocular lens and intraocular lens are formed from the same copolymer. The copolymer of intraocular lenses and preferred one-piece intraocular lenses includes about 40 to about 95 percent by weight of the hydrophilic monomer based on the total weight of the dry copolymer and about 5 to about 60 percent by weight of the alkoxyalkyl methacrylate based on the total weight of the dry copolymer. A blank for use in constructing an intraocular lens includes a hydrogel in a shape suitable for finishing into an intraocular lens. The hydrogel of the blank comprises a first portion suitable for finishing into a haptic portion and a second portion suitable for finishing into an optic portion.
Type:
Grant
Filed:
May 1, 1998
Date of Patent:
July 31, 2001
Assignee:
Benz Research and Development Corporation
Abstract: A contact lens and a contact lens blank having increased dimensional stability are constructed from a copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate, wherein the copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate has either an absolute water balance ratio greater than 8 or a relative water balance ratio greater than 2 relative to a polymer of 2-hydroxyethyl methacrylate.
Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
Type:
Grant
Filed:
March 13, 2000
Date of Patent:
June 5, 2001
Assignee:
Benz Research and Development Corporation
Abstract: A contact lens of high water content and extremely high water balance made of a homopolymer or copolymer of 2,3-dihydroxypropyl methacrylate and methods of making such contact lenses, and polymers and hydrogels useful in such contact lenses.
Abstract: An ionic contact lens made from a terpolymer of 2,3-dihydroxypropyl methacrylate, 2-hydroxyethyl methacrylate, and methacrylic acid. The contact lens has excellent properties including good strength and excellent water retention properties and excellent dimensional stability.
Type:
Grant
Filed:
November 24, 1997
Date of Patent:
April 6, 1999
Assignee:
Benz Research and Development Corporation
Abstract: A method and apparatus for aligning and positioning a lens such that the optical and/or cylinder axis of the lens is precisely aligned with a fixture for the purpose of assembly or further mechanical operations such as machining and polishing. According to another aspect of the invention, the lens apex is precisely positioned a constant distance from a reference point. In order to implement the above, a method and apparatus is disclosed for optically aligning and positioning lenses using digitzed video imaging, an X-Y-Z micron stage and a microprocessor (or computer) capable of performing image analysis.
Type:
Grant
Filed:
May 29, 1990
Date of Patent:
January 14, 1992
Assignee:
Benz Research and Development Corporation
Inventors:
Patrick H. Benz, Andrew J. Eckles, IV, Peter B. Bumpus, Richard W. Adams, Stephen R. Grant