| abstract |
A stabilized visual system for directing a beam of energy, such as a laser beam, to a specific selected location in an eye and maintaining the beam in the selected location regardless of eye movements. The system employs a fundus illumination and monitoring device which illuminates the fundus of an eye and allows an observer simultaneously to observe the illuminated fundus, an eye tracker which continuously measures the position and changes in position of the illuminated eye and produces electrical signals in response to the changes in position of the eye, and an input beam stabilizer which directs a beam of electromagnetic energy to a selected location in the eye. Servomotor driven optical elements (e.g., a pair of mirrors) are positioned in the path of the beam of electromagnetic energy and are connected to receive and be driven by the electrical signals produced by the eye tracker so that the electromagnetic beam is maintained at the specific selected location in the eye even though the eye moves. |