Laser apparatus including binocular indirect ophthalmoscope

A laser apparatus including a binocular indirect opthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising:

• an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope;
• an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect opthalmoscope is provided in the object side of an ophthalmoscope lens;
• an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams;
• an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams;
• and
• means for continuously adjusting an optical distance of the treatment laser beam.

A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment semiconductor laser beam on an eye to be treated comprising:

• an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope;
• an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens;
• an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams;
• and
• an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams.

A laser apparatus including a binocular indirect ophthalmoscope for irradiating a treatment laser beam on an eye to be treated comprising:

• an optical fiber for guiding the treatment laser beam to the binocular indirect ophthalmoscope;
• an optical element, which reflects the treatment laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope is provided in the object side of an ophthalmoscope lens;
• an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by optical axes of said pair of observation beams;
• an optical system which directs the treatment laser beam to said optical element so that the optical axis of the treatment laser beam coincides with the substantial center of said optical axes of said pair of observation beams;
• and
• means for irradiating the eye to be treated by a guide beam, the treatment laser beam and the guide beam are coupled and sent into the optical fiber.

A laser apparatus including a binocular indirect ophthalmoscope for irradiating a semiconductor laser beam on an eye to be treated comprising:

• an optical fiber for guiding the semiconductor laser beam to the binocular indirect ophthalmoscope;
• an optical element, which reflects the semiconductor laser beam while transmitting a pair of observation beams of the binocular indirect ophthalmoscope, provided in the object side of an ophthalmoscope lens;
• an optical system which directs the semiconductor laser beam to the optical element so that the optical axis of the semiconductor laser beam coincides with the substantial center of optical axes of said pair of observation beams;
• an illumination optical system providing an illumination beam at a predetermined angle to a plane defined by the optical axes of said pair of observation beams;
• and
• means for irradiating the eye to be treated by a guide beam, the treatment beam and the guide beam being coupled and sent into the optical fiber.