4682866Head-borne binocular indirect ophthalmoscope with integrated telescope1987-07-28Volk351/205 4671631Binocular ophthalmoscope1987-06-09Sigelman351/205 4669839Optical system for therapeutic use of laser light1987-06-02Muchel351/221 4637699Binocular ophthalmoscope1987-01-20Sigelman351/205 ...