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US 6,679,606 B2Granted
Method for determining accommodation
AssigneeAlcon Inc.
InventorsJohn A. Campin, Gary P. Gray, George Pettit
Life of this patent
Estimating the term…
Abstract
An automated, objective method for determining the accommodative range and aberration profile of an eye using a wavefront sensor that iteratively determines the change in accommodation of the lens of an eye.
Claims2
A method of determining an accommodative range of an eye, comprising the steps of:
- a) taking a plurality of initial wavefront measurements of an eye using a wavefront sensor with the eye in its most relaxed state until a first stable prescription is obtained;
- b) applying an accommodative stimulus to the eye and taking multiple additional wavefront measurements until a second stable prescription is obtained;
- and
- c) determining an accommodative range of the eye by using the difference between the first stable prescription and the second stable prescription.
1 more element
A method of determining an aberration profile of an eye, comprising the steps of:
- a) taking a plurality of initial wavefront measurements of an eye using a wavefront sensor with the eye in its most relaxed state until a first stable prescription is obtained;
- b) applying an accommodative stimulus to the eye and taking multiple additional wavefront measurements until a second stable prescription is obtained;
- c) determining a plurality of iterative prescriptions between the first stable prescription and the second stable prescription from each multiple additional wavefront measurements;
- and
- d) determining an aberration profile of the eye by using the first stable prescription, the second stable prescription and the iterative prescriptions.
2 more elements
Dependencies are inferred from the claim text.