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US 2006/0224238 A1Published application
Adaptively focusing extra-ocular vision prostheses
AssigneeMassachusetts Eye and Ear Infirmary
InventorDimitri Azar
Life of this patent
Estimating the term…
Abstract
A vision prosthesis includes an actuator in communication with an extra-ocular lens. The actuator providing a focusing stimulus to vary a focal length of the lens. A rangefinder estimates a range to an object and provides the range estimate to a controller. The controller causes the actuator to generate the focusing stimulus on the basis of the range estimate.
Claims20
A vision prosthesis comprising:
- an actuator in communication with an extra-ocular lens, the actuator providing a focusing stimulus to vary a focal length of the lens;
- a rangefinder for estimating a range to an object;
- and
- a controller in communication with the rangefinder and the actuator, the controller being configured to cause the actuator to generate the focusing stimulus on the basis of the range estimate.
1 more element
A method for assisting a patient in focusing on an object, the method comprising:
- providing a lens for the patient to look through, the lens having a variable focal length;
- estimating a distance to an object within a field of view of the lens;
- and
- causing the focal length to change in response to the estimate.
1 more element
An apparatus for correcting vision, the apparatus comprising:
- means for estimating a range to an object;
- and
- means for varying a focal length of an extra-ocular lens on the basis of the range estimate.
Dependencies are inferred from the claim text.