Device and method for simulating ophthalmic surgery

• US 6,210,169 B1
• Filed: 01/31/1997
• Issued: 04/03/2001
• Est. Priority Date: 01/31/1997
• Status: Expired due to Fees

• Current Assignee: Lasersight Technologies Inc. (Xianding Weng)
• Original Assignee: Lasersight Technologies Inc. (Xianding Weng)
• Inventors: Yavitz, Edward Q.
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): Rovnak, John Edmund
• Application Number:
  US08/792,888
• Time in Patent Office: 1,523 Days
• Field of Search: 434/271, 606/4, 606/5, 606/11
• US Class Current: 434/271
• CPC Class Codes: G09B 23/28 for medicine

Abstract

A device for simulating ophthalmic surgery is disclosed which comprises a laser for generating a laser beam, an array for sensing whether the laser beam has been projected at the array, and a computer system operatively connected to the laser and the array, the computer system for actuating the laser, for determining whether the array has sensed the laser beam, and for creating an ablation profile based upon whether the array has sensed the laser beam.

Claims

1. A device for simulating an ablation of a cornea of an eye, comprising:

at least one sensing device capable of sensing a presence of at least a portion of a laser beam, and

a processor adapted to determine whether said at least one sensing device has sensed said presence of said laser beam to create an ablation profile based on, at least in part, a duration of said presence of said laser beam.

2. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said processor further comprises:

a display to provide a three dimensional view of said ablation profile.

3. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said at least one sensing device comprises a plurality of sensing elements.

4. The device for simulating an ablation of a cornea of an eye according to claim 3, wherein:

said plurality of sensing elements are arranged in a grid.

5. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said at least one sensing device comprises:

at least one photovoltaic sensor.

6. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said at least one sensing device comprises:

at least one electronic sensor.

7. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said at least one sensing device comprises:

at least one galvanometric device.

8. The device for simulating an ablation of a cornea of an eye according to claim 1, wherein said at least one sensing device comprises:

a bundle of fiber optic elements.

9. The device for simulating an ablation of a cornea of an eye according to claim 8, wherein:

an end of said bundle of fiber optic elements is arranged to simulate a contour of a cornea.

10. A method of simulating an ablation of a cornea of an eye, comprising:

providing an array of sensor devices to sense a presence of a laser beam; and

determining whether said array of sensing devices has sensed said presence of said laser beam;

creating an ablation profile based on, at least, a duration of said presence of said laser beam.

11. A method of simulating an ablation of a cornea of an eye, comprising:

determining a first final ablation profile;

irradiating a laser beam on an array of sensing elements in accordance with said first final ablation profile; and

constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements.

12. The method of simulating an ablation of a cornea of an eye according to claim 11, further comprising:

comparing said simulated ablation profile with said first final ablation profile.

13. The method of simulating an ablation of a cornea of an eye according to claim 12, further comprising:

determining a second final ablation profile if, based on said comparison of said simulated ablation profile with said first final ablation profile, said simulated ablation profile does not match said first final ablation profile to within a predetermined criteria.

14. The method of simulating an ablation of a cornea of an eye according to claim 13, further comprising:

replacing said first final ablation profile with said second final ablation profile.

15. The method of simulating an ablation of a cornea of an eye according to claim 11, wherein:

said simulated ablation profile is three dimensional.

16. The method of simulating an ablation of a cornea of an eye according to claim 11, further comprising:

displaying said simulated ablation profile.

17. The method of simulating an ablation of a cornea of an eye according to claim 16, wherein:

said simulated ablation profile is displayed in a three dimensional view.

18. A method of simulating an ablation of a cornea of an eye, comprising:

(a) determining a first final ablation profile;

(b) irradiating a laser beam on an array of sensing elements in accordance with said first final ablation profile;

(c) constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements;

(d) comparing said simulated ablation profile with said first final ablation profile;

(e) determining a second final ablation profile to replace said first final ablation profile if, based on said comparison of said simulated ablation profile with said first final ablation profile, said simulated ablation profile does not match said first final ablation profile to within a predetermined criteria; and

(f) repeating steps (a) through (e) until said simulated ablation profile matches said first final ablation profile, based on said comparison, to within said predetermined criteria.

19. A method of simulating an ablation of a cornea of an eye, comprising:

determining a final ablation profile which represents a profile of an intended ablation of said cornea;

determining a first energy profile based on said final ablation profile;

irradiating a laser beam on an array of sensing elements in accordance with said first energy profile; and

constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements.

20. The method of simulating an ablation of a cornea of an eye according to claim 19, further comprising:

comparing said simulated ablation profile with said final ablation profile.

21. The method of simulating an ablation of a cornea of an eye according to claim 20, further comprising:

determining a second energy profile if, based on said comparison of said simulated ablation profile with said final ablation profile, said simulated ablation profile does not match said final ablation profile to within a predetermined criteria.

22. The method of simulating an ablation of a cornea of an eye according to claim 21, further comprising:

replacing said first energy profile with said second energy profile.

23. The method of simulating an ablation of a cornea of an eye according to claim 19, wherein:

said simulated ablation profile is three dimensional.

24. The method of simulating an ablation of a cornea of an eye according to claim 19, further comprising:

displaying said simulated ablation profile.

25. The method of simulating an ablation of a cornea of an eye according to claim 24, wherein:

said simulated ablation profile is displayed in a three dimensional view.

26. A method of simulating an ablation of a cornea of an eye, comprising:

(a) determining a final ablation profile which represents a profile of an intended ablation of said cornea;

(b) determining a first energy profile based on said final ablation profile;

(c) irradiating a laser beam on an array of sensing elements in accordance with said first energy profile;

(d) constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements;

(e) comparing said simulated ablation profile with said final ablation profile;

(f) determining a second energy profile to replace said first energy profile if, based on said comparison of said simulated ablation profile with said final ablation profile, said simulated ablation profile does not match said final ablation profile to a predetermined criteria; and

(g) repeating steps (a) through (f) until said simulated ablation profile matches said first final ablation profile within a predetermined criteria.

27. Apparatus for simulating an ablation of a cornea of an eye, comprising:

means for determining a first final ablation profile;

means for irradiating a laser beam on an array of sensing elements in accordance with said first final ablation profile; and

means for constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements.

28. Apparatus for simulating an ablation of a cornea of an eye, comprising:

means for determining a final ablation profile which represents a profile of an intended ablation of said cornea;

means for determining a first energy profile based on said final ablation profile;

means for irradiating a laser beam on an array of sensing elements in accordance with said first energy profile; and

means for constructing a simulated ablation profile based on, at least in part, a duration of irradiation and corresponding irradiated portion of said array of sensing elements.