System and method for laser treatment of ocular tissue based on patient biometric data and apparatus and method for determining laser energy based on an anatomical model

A system for photodisrupting a target volume of ocular tissue with a laser, the target volume of ocular tissue associated with an eye of a patient, the system comprising:

• a first optical subsystem including one or more optical components configured to be coupled to the eye;
• a second optical subsystem including a laser source configured to output a laser beam, and a plurality of components optically coupled between the laser source and the first optical subsystem;
• and
• a control system coupled to the first optical subsystem and the second optical subsystem and configured to:
• derive an initial coordinate set based on data of the patient, the initial coordinate set corresponding to an initial location within a target volume of ocular tissue;
• determine an energy parameter from a database that maps a plurality of coordinate sets of locations within the target volume of ocular tissue, including the initial coordinate set, to energy parameters;
• control the laser source to output a laser beam and the plurality of components to place a focus of the laser beam at the initial location within the target volume of ocular tissue;
• and
• control the second optical subsystem to apply photodisruptive energy by the laser beam at the initial location in accordance with the energy parameter,
• wherein the control system derives an initial coordinate set corresponding to the initial location of the focus within the target volume of ocular tissue by being further configured to:
• determine a deformed posterior conic constant k and a deformed posterior base radius of curvature Rp;
• and
• apply the deformed posterior conic constant k and the deformed posterior base radius of curvature Rp to a function that is based on:
• a central corneal thickness (CCT),
• a white-to-white (W2W) diameter at a meridian of a cornea of the eye, and
• an anterior cornea radius of curvature Ra at the meridian of the cornea of the eye.