Systems and methods for testing intraocular lenses
View Patent ↗Systems and their methods of use for testing intraocular lenses outside of the lens capsule. In some embodiments the systems measure an accommodative response based on a force applied to the intraocular lens.
1. A method of testing an accommodative response of an accommodating intraocular lens, comprising:
applying a force to an accommodating intraocular lens when the accommodating intraocular lens is outside of a lens capsule; and
measuring an accommodative response of the accommodating intraocular lens to the applied force, wherein applying a force to the accommodating intraocular lens comprises applying a compressive force to the accommodating intraocular lens.
2. The method of claim 1 wherein applying a force to the accommodating intraocular lens comprises applying a force to a peripheral portion of the accommodating intraocular lens.
3. The method of claim 1 wherein applying a compressive force comprises applying a radially compressive force to the accommodating intraocular lens.
4. The method of claim 1 wherein applying a force to the accommodating intraocular lens comprises displacing a flowable media within the accommodating intraocular lens from a peripheral portion of the accommodating intraocular lens to an optic portion of the accommodating intraocular lens.
5. The method of claim 1 wherein measuring an accommodating response of the accommodating intraocular lens comprises measuring the deflection of a surface of the accommodating intraocular lens.
6. The method of claim 1 wherein measuring the deflection of a surface of the accommodating intraocular lens comprises measuring the deflection of an anterior surface of the accommodating intraocular lens.
7. The method of claim 1 wherein measuring an accommodative response of the accommodating intraocular lens comprises optically measuring an accommodative response of the accommodating intraocular lens.
8. The method of claim 1 further comprising measuring the force applied to the accommodating intraocular lens and relating it to the measured accommodative response.
9. The method of claim 1 wherein measuring an accommodative response of the accommodating intraocular lens comprises measuring a change of configuration of the lens or a portion of the lens.
10. The method of claim 1 wherein measuring an accommodative response of the accommodating intraocular lens to the applied force comprises measuring an accommodative response of an optic portion of the accommodating intraocular lens to the applied force.
11. The method of claim 1 wherein applying a force to the accommodating intraocular lens simulates a force applied to the accommodating intraocular lens from a native capsular bag.
12. The method of claim 1 wherein measuring an accommodative response comprises measuring a change in optical power of the accommodating intraocular lens in response to the applied force.
13. A system for measuring an accommodative response of an accommodating intraocular lens outside of a lens capsule, comprising:
a force effector adapted to apply a compressive force on an accommodating intraocular lens; and
an accommodative response measuring element adapted to measure an accommodative response of the accommodating intraocular lens to the compressive force applied by the force effector.
14. The system of claim 13 wherein the force effector is adapted to apply a radially compressive force on the accommodating intraocular lens.
15. The system of claim 13 wherein the force effector is a first force effector and the system further comprises a second force effector, wherein the first force effector is disposed substantially opposite the second force effector around the periphery of the accommodating intraocular lens.
16. The system of claim 13 wherein the force effector is a first force effector and the system further comprises a second force effector, wherein the first force effector is adapted to be actuated with a first compression actuator to apply a force to the accommodating intraocular lens and the second force effector is adapted to be actuated with a second compression actuator to apply a second force to the accommodating intraocular lens.
17. The system of claim 13 wherein the system further comprises a force measuring element adapted to measure the force applied to the accommodating intraocular lens.
18. The system of claim 17 wherein the force measuring element is a load cell.
19. The system of claim 13 wherein the accommodative response measuring element is adapted to measure deflection of a surface of the accommodating intraocular lens.
20. The system of claim 19 wherein the accommodative response measuring element comprises a microscope adapted to sense a focus plane on a surface of the accommodating intraocular lens.
21. The system of claim 13 further comprising the accommodating intraocular lens.