Patent ID: 7404639

Claim:
An eyesight recovery method comprising the steps of: reading out 3-D image data comprising perspective image data for left and right eyes from a memory; separating the 3-D image data into image data for the left eye and image data for the right eye; storing the image data for the left eye and the image data for the right eye in an image memory; sending a timing signal to the image memory and to an infrared light emitting unit; alternately reading out the image data for the left eye and the image data for the right eye from the image memory according to the timing signal; emitting infrared light from the infrared light emitting unit to spectacles according to the timing signal; opening and closing the shutters of the spectacles in accordance with the infrared light from the infrared light emitting unit; displaying a 3-D image based on the image data for the left eye and the image data for the right eye using a 3-D image display device which displays an image for the left eye and an image for the right eye on a single electronic display screen alternately and synchronously according to the timing signal, wherein the electronic display screen is remotely separated and detached from the spectacles and remains located at a stationary position; allowing an observer wearing the spectacles in which the shutters of the spectacles open and close in synchronism with respect to the display of the images on the electronic display screen to see the images to produce a convergence angle and parallax so as to obtain the 3-D image and make the observer's right and left eyes focus on the images in order to recognize the 3-D image; displaying the 3-D image on the electronic display screen for the observer to see at a position close to the spectacles; displaying a receding movement of the 3-D image on the electronic display screen for the observer to see the 3-D image gradually moving away from the spectacles; displaying an approaching movement of the 3-D image on the electronic display screen at a distance from the spectacles for the observer to see the 3-D image gradually moving toward the spectacles; and repeating the displayed receding/approaching movements of the 3-D image on the electronic display screen to stimulate the ciliary bodies and eyeball moving muscles of the observer in order to recover the observer's eyesight as a result of the observer continuously focusing on the images displayed on the electronic display screen in order to see the 3-D image.