초록 ▼

An improved method and apparatus for photocoagulation of the fundus of a patient\s eye eliminates the contact lens and provides for binocular viewing. The technique is characterized by the utilization of a common ophthalmoscopic lens for each of the illumination beam, the observation beam, and the l

An improved method and apparatus for photocoagulation of the fundus of a patient\s eye eliminates the contact lens and provides for binocular viewing. The technique is characterized by the utilization of a common ophthalmoscopic lens for each of the illumination beam, the observation beam, and the laser beam. A scanning mirror for the laser beam is disposed on the optical axis and is rotatable in two dimensions about a fixed point which is conjugated with the nodal point of the patient\s eye with respect to the ophthalmoscopic lens. The binocular viewing paths are converged onto a point on the optical axis in the plane of the first aerial image of the fundus provided by the ophthalmoscopic lens; the laser beam reflected by the scanning mirror is also focused onto that point.

대표청구항 ▼

Apparatus for improving photocoagulation of the fundus area of a patient\s eye by means of a laser beam introduced into the eye via the pupil of the eye, the eye having a crystalline lens with an optical nodal point, said apparatus including: an observation system for viewing the patient\s eye along

Apparatus for improving photocoagulation of the fundus area of a patient\s eye by means of a laser beam introduced into the eye via the pupil of the eye, the eye having a crystalline lens with an optical nodal point, said apparatus including: an observation system for viewing the patient\s eye along an optical axis passing through said nodal point; a laser beam delivery system for directing the laser beam into the pupil of said eye; an ophthalmoscopic lens centered on said optical axis and constituting part of both said observation system and said laser beam delivery system; wherein said laser beam delivery system includes a scanning mirror rotatable about a fixed point on said optical axis to move an image of said laser beam along said fundus area, said mirror being positioned such that said fixed point and said nodal point are conjugate points of said ophthalmoscopic lens.