Patents by Inventor Valdemar Portney

Valdemar Portney has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20010012964
    Abstract: Intraocular lenses include a lens body sized and adapted for placement in a mammalian eye and having a plurality of different optical powers, and a movement assembly joined to the lens body and adapted to cooperate with the mammalian eye to effect accommodating movement of the lens body in the eye. Such intraocular lenses provide enhanced accommodation relative to the accommodation attainable using a single optical power IOL adapted for accommodating movement.
    Type: Application
    Filed: March 30, 2001
    Publication date: August 9, 2001
    Applicant: Vision Pharmaceuticals L.P.
    Inventors: Alan J. Lang, Valdemar Portney, Stephen W. Laguette
  • Publication number: 20010008977
    Abstract: A multifocal ophthalmic lens, having outer annular zones with vision correction powers less than a far vision correction power of the patient, is disclosed. These additional annular zones come into play, when the pupil size increases under dim lighting conditions, to thereby compensate for the near-vision powered annular zones. The net effect of the additional near vision annular zones and the additional annular zones having power less than the far vision correction power is to shift the best quality image from in front of the retina to an area on the retina of the eye, to thereby reduce halo effects and improve image contrast.
    Type: Application
    Filed: February 26, 2001
    Publication date: July 19, 2001
    Applicant: Allergan, Inc.
    Inventor: Valdemar Portney
  • Publication number: 20010002859
    Abstract: Ophthalmic lenses, for example, intraocular lenses, contact lenses, corneal implant lenses and the like, have multifocal characteristics which provide beneficial reductions in at least the perception of one or more night time visual symptoms such as “halos”, and “glare or flare”.
    Type: Application
    Filed: January 11, 2001
    Publication date: June 7, 2001
    Inventor: Valdemar Portney
  • Patent number: 6238433
    Abstract: A posterior/anterior chamber intraocular lens for implantation in an eye has an optic and at least one elongated fixation member. The optic has an optical axis. The fixation member has a proximal segment joined to the optic, a distal segment extending away from the optic, and an intermediate segment joining the proximal and distal segments. The intermediate segment has a through-iris portion adapted to extend through the iris of the eye. The distal segment is adapted to be disposed in the posterior chamber of the eye while the proximal segment is adapted to be disposed in the anterior chamber of the eye.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: May 29, 2001
    Assignee: Allergan Sales, Inc.
    Inventor: Valdemar Portney
  • Patent number: 6231603
    Abstract: Intraocular lenses include a lens body sized and adapted for placement in a mammalian eye and having a plurality of different optical powers, and a movement assembly joined to the lens body and adapted to cooperate with the mammalian eye to effect accommodating movement of the lens body in the eye. Such intraocular lenses provide enhanced accommodation relative to the accommodation attainable using a single optical power IOL adapted for accommodating movement.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: May 15, 2001
    Assignee: Allergan Sales, Inc.
    Inventors: Alan I. Lang, Valdemar Portney, Stephen W. Laguette
  • Patent number: 6221105
    Abstract: A multifocal ophthalmic lens, having outer annular zones with vision correction powers less than a far vision correction power of the patient, is disclosed. These additional annular zones come into play, when the pupil size increases under dim lighting conditions, to thereby compensate for the near-vision powered annular zones. The net effect of the additional near vision annular zones and the additional annular zones having power less than the far vision correction power is to shift the best quality image from in front of the retina to an area on the retina of the eye, to thereby reduce halo effects and improve image contrast.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: April 24, 2001
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 6210005
    Abstract: Ophthalmic lenses, for example, intraocular lenses, contact lenses, corneal implant lenses and the like, have multifocal characteristics which provide beneficial reductions in at least the perception of one or more night time visual symptoms such as “halos”, and “glare or flare”.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: April 3, 2001
    Inventor: Valdemar Portney
  • Patent number: 6197058
    Abstract: A corrective intraocular lens system comprises a primary intraocular lens for implanting into an individual's aphakic or phakic eye. The primary intraocular lens includes an optic portion having an optical axis and an anterior surface and a posterior surface, and includes attachment means for maintaining the optic portion centered along the optical axis of the individual's eye. The optic portion is formed having a narrow recess or groove formed into the anterior surface adjacent peripheral regions of the optical portion. The recess may extend completely or only partially around the optic. Included is an elastically deformable, corrective secondary intraocular lens having an optic portion with an anterior surface and a posterior surface.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: March 6, 2001
    Inventor: Valdemar Portney
  • Patent number: 6186625
    Abstract: An improved ophthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or “edges”.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: February 13, 2001
    Inventor: Valdemar Portney
  • Patent number: 6152959
    Abstract: An iris fixated intraocular lens for implanting in the anterior chamber of an eye comprises an optic having an optical axis and anterior and posterior sides; and first and second fixation members, each of the fixation members having a proximal end region and a distal end region. The proximal end region of each fixation member is a single flexible strand fixed to an edge region of the optic to extend generally tangentially outwardly therefrom and the distal end region is formed into a loop having defined therein at least one narrow iris pincher gap for detachably attaching the intraocular lens to the anterior surface of the iris. The first and second fixation members are substantially identical to one another and are attached to the optic on opposite sides of the optical axis.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 28, 2000
    Inventor: Valdemar Portney
  • Patent number: 6132436
    Abstract: The sleeve apparatus for a phacoemulsification/irrigation and aspiration handpiece having an ultrasonic drive assembly attached to a hollow needle includes a compressible sleeve for establishing an annular passage around the needle and enabling the irrigation fluid to pass into an eye through a cornea/sclera wound while cooling the needle. The heat activated element is provided and disposed between the compressible sleeve and the needle for preventing contact between the compressible sleeve and the needle and maintaining the annular passage therebetween for irrigation fluid flow.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: October 17, 2000
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 6126286
    Abstract: An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus is adapted to be implanted into an eye, placed over the eye, or to be disposed in a cornea of the eye. The ophthalmic lens includes a baseline diopter power for far vision correction, a first zone having a first vision correction power, and a second zone having a second vision correction power. The second zone is located radially outwardly of the first zone. The first zone includes a near vision correction power, and the second zone includes a far vision correction power. A maximum diopter value of the first zone is approximately 0.7 diopters above the baseline diopter, and a minimum diopter value of the second zone is approximately 0.5 diopters below the baseline diopter power. The first zone is adapted for focusing light at a first predetermined distance from the retina of the user, and the second zone is adapted for focusing light at a second predetermined distance from the retina of the user.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: October 3, 2000
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 6113633
    Abstract: A supplemental intraocular lenses may be attached to conventional primary intraocular lenses using annular wrap-around clamps or adhesive or laser welding. New primary intraocular lens configurations have pockets for accommodating relatively small, supplemental intraocular lenses therein.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: September 5, 2000
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 6024447
    Abstract: An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus is adapted to be implanted into an eye, placed over the eye, or to be disposed in a cornea of the eye. The ophthalmic lens includes a baseline diopter power for far vision correction, a first zone having a first vision correction power, and a second zone having a second vision correction power. The second zone is located radially outwardly of the first zone. The first zone includes a near vision correction power, and the second zone includes a far vision correction power. A maximum diopter value of the first zone is approximately 0.7 diopters above the baseline diopter, and a minimum diopter value of the second zone is approximately 0.5 diopters below the baseline diopter power. The first zone is adapted for focusing light at a first predetermined distance from the retina of the user, and the second zone is adapted for focusing light at a second predetermined distance from the retina of the user.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: February 15, 2000
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 5919229
    Abstract: A multifocal ophthalmic lens, having outer annular zones with vision correction powers less than a far vision correction power of the patient, is disclosed. These additional annular zones come into play, when the pupil size increases under dim lighting conditions, to thereby compensate for the near-vision powered annular zones. The net effect of the additional near vision annular zones and the additional annular zones having power less than the far vision correction power is to shift the best quality image from in front of the retina to an area on the retina of the eye, to thereby reduce halo effects and improve image contrast.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: July 6, 1999
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 5877839
    Abstract: An improved opthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or "edges".Two versions of the invention are disclosed. In the first version continuous, alternating power variation is accomplished by a continuously changing curvature of the lens posterior surface, thereby altering the angle of impact of light rays on the eye.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: March 2, 1999
    Inventor: Valdemar Portney
  • Patent number: 5864378
    Abstract: An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus is disclosed. The ophthalmic lens includes a baseline diopter power for far vision correction, a first zone having a first vision correction power, and a second zone having a second vision correction power. The second zone is located radially outwardly of the first zone. The first zone includes a near vision correction power, and the second zone includes a far vision correction power. The first zone is adapted for focusing light at a first predetermined distance from the retina of the user, and the second zone is adapted for focusing light at a second predetermined distance from the retina of the user. The second predetermined distance is approximately opposite and equal to the first predetermined distance.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: January 26, 1999
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 5709218
    Abstract: The present invention is directed to a method for predicting visual acuity to the subject due to change in spherocylindrical refractive error of the subject's eye utilizing measurements of uncorrected visual acuity, corrected visual acuity and spherical cylindrical refractive error. A defocus equivalent is calculated and predictions of uncorrected visual acuity is made through the use of a defocused acuity graph.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: January 20, 1998
    Assignee: Allergan
    Inventors: Jack T. Holladay, Alan J. Lang, Valdemar Portney
  • Patent number: 5702440
    Abstract: A multifocal ophthalmic lens, having outer annular zones with vision correction powers less than a far vision correction power of the patient, is disclosed. These additional annular zones come into play, when the pupil size increases under dim lighting conditions, to thereby compensate for the near-vision powered annular zones. The net effect of the additional near vision annular zones and the additional annular zones having power less than the far vision correction power is to shift the best quality image from in front of the retina to an area on the retina of the eye, to thereby reduce halo effects and improve image contrast.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: December 30, 1997
    Assignee: Allergan
    Inventor: Valdemar Portney
  • Patent number: 5657108
    Abstract: An improved opthalmic lens is disclosed which has a plurality of alternating power zones with a continuously varying power within each zone, as well as in transition from one zone to another. In other words, a plurality of concentric zones (at least two) are provided in which the variation from far to near vision correction is continuous, i.e., from near correction focal power to far correction focal power, then back to near, and again back to far, or vice versa. This change is continuous (progressive), without any abrupt correction changes, or "edges".Two versions of the invention are disclosed. In the first version continuous, alternating power variation is accomplished by a continuously changing curvature of the lens posterior surface, thereby altering the angle of impact of light rays on the eye,In the second version continuous, alternating power variation is accomplished by creating non-homogeneous which continuously vary in the lens radial direction (out from the optical axis).
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: August 12, 1997
    Inventor: Valdemar Portney