Back to results
US 10,473,953 B2Granted
Treating ocular refractive error
AssigneeBrien Holden Vision Institute Limited
InventorsArthur Ho, Padmaja Rajagopal Sankaridurg, Earl Leo Smith, III, Brien Anthony Holden
Life of this patent
Estimating the term…
Abstract
A lens for an eye that includes a zone with a first power profile for images received by the retina on the fovea, a zone with a second power profile for images received by the peripheral retina on the nasal side and a zone with a third power profile for images received by the peripheral retina on the temporal side. The first power profile is selected to provide clear or acceptable vision and the second and third power profiles are selected to affect the peripheral image position.
Claims38
A method of treating an eye with hyperopia comprising:
- a) measuring the refractive characteristics of the eye at the central and peripheral retina, comprising:
- i) measuring on-axis refractive error, and
- ii) measuring off-axis error at more than one field angle in the nasal and temporal directions, respectively;
- b) determining from said measuring that the eye has asymmetrical off-axis refractive characteristics;
- and
- c) affecting the refractive properties of an ocular system comprising the eye to provide clear or acceptable vision on-axis and to control the position of the image of peripheral objects to behind the retina so as to also reduce said asymmetry for at least one off-axis angle;
- said affecting comprising applying an orthokeratology lens to the eye or inserting a corneal implant into the eye, wherein the orthokeratology lens or the corneal implant provides said clear or acceptable vision on-axis and controls the position of the image of peripheral objects by reshaping the cornea;
- wherein the ocular system comprises the eye and the lens for the eye, the lens comprising:
- i) a central optic zone with a refractive power having a first power profile to correct on-axis vision of the eye so as to provide said clear or acceptable vision on-axis;
- ii) a nasal optic zone and a temporal optic zone, wherein:
- 1) the nasal optic zone has a second power profile for controlling the position of the image of peripheral objects received on the nasal side of the retina;
- and
- 2) the temporal optic zone has a third power profile for controlling the position of the image of peripheral objects received on the temporal side of the retina;
- wherein at least the second power profile is different from the third power profile so as to reduce said asymmetry;
- wherein the nasal optic zone and the temporal optic zone of said lens:
- i) refract light to be received by the peripheral retina so as to be focused on or behind the retina, and
- ii) have different refractive powers;
- and
- wherein the refractive power of the nasal optic zone or the temporal optic zone is selected to place peripheral images on the retina, and the refractive power of the other optic zone is selected to place peripheral images off the retina.
16 more elements
A method of treating an eye with hyperopia comprising:
- a) measuring the refractive characteristics of the eye at the central and peripheral retina, comprising:
- i) measuring on-axis refractive error, and
- ii) measuring off-axis error at more than one field angle in the nasal and temporal directions, respectively;
- b) determining from said measuring that the eye has asymmetrical off-axis refractive characteristics;
- and
- c) affecting the refractive properties of an ocular system comprising the eye to provide clear or acceptable vision on-axis and to control the position of the image of peripheral objects to behind the retina so as to also reduce said asymmetry for at least one off-axis angle;
- said affecting comprising applying a lens to the eye, wherein the lens comprises:
- i) a central optic zone with a refractive power to correct on-axis vision of the eye so as to provide said clear or acceptable vision on-axis;
- ii) a nasal optic zone and a temporal optic zone, wherein:
- 1) the nasal optic zone controls the position of the image of peripheral objects received on the nasal side of the retina;
- 2) the temporal optic zone controls the position of the image of peripheral objects received on the temporal side of the retina;
- and
- 3) the nasal optic zone and the temporal optic zone refract light to be received by the peripheral retina so as to be focused on or behind the retina;
- wherein the nasal optic zone has an increased power relative to a power on-axis and the temporal optic zone has a decreased power relative to the power on-axis.
11 more elements
A method of treating an eye with hyperopia comprising:
- a) measuring the refractive characteristics of the eye at the central and peripheral retina, comprising:
- i) measuring on-axis refractive error, and
- ii) measuring off-axis error at more than one field angle in the nasal and temporal directions, respectively;
- b) determining from said measuring that the eye has asymmetrical off-axis refractive characteristics;
- and
- c) affecting the refractive properties of an ocular system comprising the eye to provide clear or acceptable vision on-axis and to control the position of the image of peripheral objects to behind the retina so as to also reduce said asymmetry for at least one off-axis angle;
- said affecting comprising applying a lens to the eye, wherein the lens comprises:
- i) a central optic zone with a refractive power to correct on-axis vision of the eye so as to provide said clear or acceptable vision on-axis;
- ii) a nasal optic zone and a temporal optic zone, wherein:
- 1) the nasal optic zone controls the position of the image of peripheral objects received on the nasal side of the retina;
- 2) the temporal optic zone controls the position of the image of peripheral objects received on the temporal side of the retina;
- and
- 3) the nasal optic zone and the temporal optic zone refract light to be received by the peripheral retina so as to be focused on or behind the retina;
- wherein the temporal optic zone has an increased power relative to an on-axis power and the nasal optic zone has a decreased power relative to the on-axis power.
11 more elements
Dependencies are inferred from the claim text.