Surgical guidance and planning software for astigmatism treatment

Abstract

Software for calculating an astigmatism treatment is operable upon execution to perform the following steps: receiving biometric information for a patient; determining based on the biometric information an astigmatic correction comprising at least one of (a) a position for one or more limbal relaxing incisions and (b) a power and an orientation for a toric intraocular lens (IOL); generating an output comprising the astigmatic correction; receiving a selection of a different ratio of astigmatic correction attributable to the one or more limbal relaxing incisions and the toric IOL; determining an updated astigmatic correction including at least one of (a) an updated position for the one or more limbal relaxing incisions and (b) an updated power and/or orientation of the toric IOL.

What is claimed is: 
     
         1 . Software embodied in a computer-readable medium and operable upon execution by at least one processor to perform the following steps:
 receiving biometric information for a patient;   determining based on the biometric information an astigmatic correction comprising at least one of (a) a position for one or more limbal relaxing incisions and (b) a power and an orientation for a toric intraocular lens (IOL);   generating an output comprising the astigmatic correction;   receiving a selection of a different ratio of astigmatic correction attributable to the one or more limbal relaxing incisions and the toric IOL;   determining an updated astigmatic correction including at least one of (a) an updated position for the one or more limbal relaxing incisions and (b) an updated power and/or orientation of the toric IOL.   
     
     
         2 . The software of  claim 1 , wherein the selection of the different ratio is entered by the user via a slider bar displayed on a graphical user interface of the software. 
     
     
         3 . Software embodied in a computer-readable medium and operable upon execution by at least one processor to perform the following steps:
 receiving the following information for a patient having astigmatism:
 (a) an astigmatism value to be treated, 
 (b) an axis of the astigmatism, 
 (c) a patient age, 
 (d) a radial location of at least one limbal relaxing incision, 
 (e) a depth for the at least one limbal relaxing incision, and 
 (f) a corneal power for the patient; 
   determining at least one limbal relaxing incision position based on all of the information (a)-(f); and   generating an output comprising the at least one limbal relaxing incision position.   
     
     
         4 . The software of  claim 3 , wherein the step of determining at least one limbal relaxing incision position further comprises determining a position and an orientation of a toric intraocular lens (IOL). 
     
     
         5 . The software of  claim 3 , further comprising receiving outcome information for the at least one limbal relaxing incision and updating an algorithm for determining the at least one limbal relaxing incision based on the outcome information. 
     
     
         6 . The software of  claim 3 , wherein the astigmatism value to be treated and the corneal power for the patient are imported from a biometer via an interface. 
     
     
         7 . The software of  claim 3 , wherein the radial location and the depth for the at least one limbal relaxing incision are entered by a user via a user interface. 
     
     
         8 . The software of  claim 3 , wherein the radial location and the depth for the at least one limbal relaxing incision are retrieved from surgeon-specific parameters stored in a memory.