Ophthalmic measurement apparatus

Details Ophthalmic measurement apparatus Ophthalmic measurement apparatus

1996-12-12

1998-07-21

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351206, 351221, A61B 310, A61B 314

Patent

active

057841462

ABSTRACT:
In an ophthalmic measurement apparatus providing optical systems for focusing-and-projecting a laser beam for use in measuring onto an anterior portion of an eye to be examined, and for receiving a scattered light by the internal tissues of the anterior portion of the eye by a scattered laser beam by guiding the scattered light to a photoelectric transducing element, and for measuring tissues and components in the internal parts of the anterior portion of the eye based on an output signal transmitted from the photoelectric transducing element, alignment is performed by advancing a cylindrical shaped lens for forming a laser beam to be a slit-shaped light bundle in a light path in laser beam projecting optical system with observing an image of a section of the anterior portion of the eye which is light-sectioned by a slit-shaped laser beam, or by scanning a laser beam by laser beam scanning device with observing an image of a section of the anterior portion of the eye which is light-sectioned by the scanned laser beam through observation optical system.

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