Optimizing vision correction procedures
In one embodiment, a wavefront sensor is combined with a slit lamp eye examination device so that real time aberration values of an eye being examined can be viewed during a slit lamp eye examination session.
1. An apparatus for providing feedback during a vision correction procedure, with the vision correction procedure including implantation of an intra-ocular lens (IOL) by a practitioner, the apparatus comprising:
a dynamic wavefront sensor configured to provide wavefront information characterizing a subject eye during a vision correction procedure, and configured to receive a portion of a wavefront and output position values from a subject eye, indicating the position of focused subwavefronts, with the portion of the wavefront comprising a plurality of subwavefronts; and
a controller coupled to the dynamic wavefront sensor and a feedback providing device, configured to analyze wavefront information provided during rotation of an IOL, wherein the wavefront information includes centration conditions, to determine when the IOL is optimally aligned and configured to provide feedback to the practitioner when the IOL is optimally aligned.
2. The apparatus of claim 1 , wherein the controller is coupled to the dynamic wavefront sensor, and configured to measure the portion of the wavefront and the output position values received by the dynamic wavefront sensor, and further configured to continue wavefront measurement of the subject eye with an implanted intraocular lens, and to facilitate adjusting the implanted intraocular lens position in the subject eye until a feedback confirms optimal placement of the implanted intraocular lens within the subject eye.
3. The apparatus of claim 1 , with the controller further configured to provide audio feedback.
4. The apparatus of claim 3 , with the controller further coupled to an audio signal device, with the controller configured to analyze wavefront information to determine ophthalmic characteristic of the subject eye and further configured to generate an audio feedback signal having specified pitch, tone or volume to indicate deviations of measured ophthalmic characteristics from target ophthalmic characteristics.
5. The apparatus of claim 4 wherein the controller is further configured to measure the cylinder error of the subject eye and the controller varies the pitch, tone and/or volume to indicate the deviation of the cylinder value from a target value.
6. The apparatus of claim 1 further comprising:
a display; and
with the controller further configured to provide visual feedback on the display indicative of an alignment of the implanted intraocular lens, and when the IOL is optimally aligned.
7. The apparatus of claim 6 , wherein the visual feedback is highlighted with a font size, boldness, style, color, or combination thereof indicative of a level of correction.
8. The apparatus of claim 6 , wherein the visual feedback comprises an ellipse configured to show spherical and/or cylindrical refractive error(s) of the portion of the subject eye.
9. The apparatus of claim 6 , wherein the visual feedback comprises a circle configured to show spherical and/or cylindrical refractive error(s) of the subject eye.
10. The apparatus of claim 6 , wherein the visual feedback comprises a straight line configured to show spherical and/or cylindrical refractive error(s) of the subject eye.
11. The apparatus of claim 6 , wherein the visual feedback comprises alternating between a straight line and a circle configured to show spherical and/or cylindrical refractive error(s) of the subject eye.
12. The apparatus of claim 1 , wherein the controller is further configured to calculate the centration conditions based on the wavefront and output centration position values received by the dynamic wavefront sensor.
13. An apparatus comprising:
a surgical microscope configured to form an image of a subject eye at an object conjugate plane interior to the surgical microscope;
a real time wavefront sensor configured to provide wavefront information characterizing the subject eye; and
a micro-display disposed substantially at the object conjugate plane and configured to display the wavefront measurement information characterizing the subject eye such that the wavefront information is overlaid onto the image of the subject eye formed by the surgical microscope.
14. The apparatus of claim 13 , wherein the micro-display is a semi-transparent micro-display.
15. The apparatus of claim 13 , wherein the micro-display is positioned within an eyepiece of the surgical microscope.
16. The apparatus of claim 13 , wherein the micro-display is a LCD monitor mounted directly onto the surgical microscope.
17. The apparatus of claim 13 , wherein the real time wavefront sensor is further configured to receive a portion of a wavefront and output position values from the patient eye indicating the position of focused subwavefronts, with the portion of the wavefront comprising a plurality of subwavefronts.
18. An apparatus comprising:
a surgical microscope having an eyepiece configured to focus an image of a patient eye on the retina of an eye of a user;
a real time wavefront sensor configured to provide wavefront information characterizing the patient eye;
a micro-display configured to display wavefront measurement information characterizing the subject eye; and
a beam directing element, disposed in the imaging path of the surgical microscope, configured to project an image of the micro-display onto the retina of an eye of a user such that the wavefront information is overlaid onto the image of the patient eye formed by the surgical microscope and presented to the eye of the user.
19. The apparatus of claim 18 , wherein the micro-display is a semi-transparent micro-display.
20. The apparatus of claim 18 , wherein the micro-display is positioned within the eyepiece of the surgical microscope.
21. The apparatus of claim 18 , wherein the micro-display is positioned external to the eyepiece of the surgical microscope.
22. The apparatus of claim 18 , wherein the micro-display is a LCD monitor mounted directly onto the surgical microscope.
23. The apparatus of claim 18 , wherein the real time wavefront sensor is further configured to receive a portion of a wavefront and output position values from the patient eye indicating the position of focused subwavefronts, with the portion of the wavefront comprising a plurality of subwavefronts.