Systems and methods for eye imaging and position control
AssigneeStroma Medical Corporation
InventorGregg Homer
Life of this patent
Estimating the term…
Abstract
A method for altering an eye color of a patient with a color alteration procedure is disclosed that may include imaging the iris with an image sensor prior to the color alteration procedure to generate an image of the iris. A mapping of the iris may be generated from the image. The mapping may include a number of regions corresponding to varying absorption coefficients of a treatment wavelength in the stromal pigment of the iris. A laser system may be set, based on the mapping, to deliver laser light at a laser power sufficient to cause elimination of at least a portion of stromal pigment in the iris. The laser light may then be delivered with the laser system.
Claims22
A method for altering an eye color of a patient with a color alteration procedure, the method comprising:
- generating a scanning pattern for delivery of laser power to at least 50% of an anterior surface of an iris of the patient during the color alteration procedure;
- tracking, with a rangefinder that is part of an optical tracking system, an eye of the patient during the color alteration procedure;
- determining, with the rangefinder, an amount of tilt of an iris based on the optical tracking system interpreting optical data received at the optical tracking system from the eye of the patient;
- comparing the amount to a threshold amount;
- determining that the amount equals or exceeds the threshold amount;
- adjusting a fixation target characteristic of a fixation target to compensate for the amount;
- setting a laser system to deliver laser light having a laser power that will cause elimination of at least a portion of stromal pigment of the iris;
- and
- delivering, with the laser system and according to the scanning pattern, laser light having a first laser power, wherein the first laser power causes elimination of at least a portion of stromal pigment of the iris.
An apparatus for altering an eye color of a patient with a color alteration procedure, the apparatus comprising an optical tracking system having a rangefinder, a laser system, and a control system configured to:
- generate a scanning pattern for delivery of laser power to at least 50% of an anterior surface of an iris of the patient during the color alteration procedure;
- track an eye of the patient during the color alteration procedure using the rangefinder;
- determine, with the rangefinder, an amount of tilt of an iris based on the optical tracking system interpreting optical data received at the optical tracking system from the eye of the patient;
- compare the amount to a threshold amount;
- determine that the amount equals or exceeds the threshold amount;
- adjust a fixation target characteristic of a fixation target to compensate for the amount;
- set the laser system to deliver laser light having a laser power that will cause elimination of at least a portion of stromal pigment of the iris;
- and
- deliver, with the laser system and according to the scanning pattern, laser light having a first laser power, wherein the first laser power causes elimination of at least a portion of stromal pigment of the iris.
A non-transitory, computer readable medium comprising instructions recorded thereon that when executed by one or more processors causes operations comprising:
- generating a scanning pattern for delivery of laser power to at least 50% of an anterior surface of an iris;
- tracking, with a rangefinder that is part of an optical tracking system, an eye;
- determining, with the rangefinder, an amount of tilt of an iris based on the optical tracking system interpreting optical data received at the optical tracking system from the eye;
- comparing the amount to a threshold amount;
- determining that the amount equals or exceeds the threshold amount;
- adjusting a fixation target characteristic of a fixation target to compensate for the amount;
- setting a laser system to deliver laser light;
- and
- delivering, with the laser system and according to the scanning pattern, laser light having a first laser power, wherein the first laser power causes an effect on iris tissue.
Dependencies are inferred from the claim text.