Patents by Inventor Edwin W. Evers

Edwin W. Evers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for controlling visual refractive state of the eye
    Patent number: 4190332
    Abstract: A method and apparatus are disclosed for controlling the refractive state of the eye. The image of a visual target is continuously positioned close to, but offset from, the retinal plane of the eye to be controlled. The offset is in such a direction from the retina that as the eye attempts to focus on the image, the refractive state of the eye will change toward the desired goal. To increase the effectiveness of the method and apparatus, the position of the image is continually varied along the optical axis.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: February 26, 1980
    Assignee: Acuity Systems, Incorporated
    Inventors: Richard H. Body, Edwin W. Evers