Ophthalmic measuring apparatus

An ophthalmic measuring apparatus comprising:

• a laser beam projecting optical system for emitting and converging a laser beam emitted from a laser beam source to the crystalline lens of an eye;
• a scattered light detecting optical system including a photoelectric transducer for detecting light scattered by molecules in the crystalline lens from said laser beam;
• an abnormal measurement detecting optical system for detecting the abnormality of measurement;
• a determining means for determining the existence or absence of the abnormality of measurement on the basis of the results of detection provided by said abnormal measurement detecting optical system;
• a guide optical system for directly guiding the laser beam emitted from said laser beam source to the surface of the photoreceptor of said photoelectric transducer;
• a selecting means for selecting the laser beam incident onto said photoelectric transducer among the one through said guide optical system or the one through said scattered light detecting optical system;
• and
• an arithmetic means for detecting the amount of the incident light through said guide optical system to said photoelectric transducer to correct the measured value on the basis of the detected amount.

An ophthalmic measuring apparatus for detecting the eye under an examination comprising:

• a laser beam projecting optical system for emitting and converging a laser beam emitted from a laser beam source to an eye;
• a scattered light detecting optical system for detecting light scattered by molecules in the eye composition from said laser beam;
• a determining means for determining the existence or absence of the abnormality of measurement on the basis of the results of the detection provided by said scattered light detecting optical system;
• and
• a notifying means for reporting the results of the determination by said determining means.

An ophthalmic measuring apparatus comprising a laser beam projecting optical system for emitting and converging a laser beam emitted from a laser beam source to the eyeball of an eye, and a scattered light detecting optical system including a photoelectric transducer for detecting light scattered by molecules in the crystalline lens from said laser beam, for measuring the characteristics of the tissue of the crystalline lens in accordance with the light intensity detected by said photoelectric transducer, said apparatus comprising:

• a guide optical system for directly guiding the laser beam emitted from said laser beam source to the surface of the photoreceptor of said photoelectric transducer;
• a selecting means for selecting the laser beam incident into said photoelectric transducer among the one through said guide optical system or the one through said scattered light detecting optical system;
• and
• an arithmetic means for detecting the amount of the incident light through said guide optical system to said photoelectric transducer to correct for the measured value on the basis of the detected amount.