Opthalmological measurement apparatus

Details Opthalmological measurement apparatus Opthalmological measurement apparatus

1989-08-18

1991-05-07

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351214, 351221, A61B 314, A61B 310

Patent

active

050131460

ABSTRACT:
Disclosed is an ophthalmological measurement apparatus in which a laser beam is directed into an eye under examination and a measurement value is output on the basis of the state of scattering of the laser beam within the eye. An alignment index projector is provided for forming an alignment index for use in judging alignment between the apparatus and the eye under examination, whose relative position is controlled to cause light scattering points produced at the eye by the laser beam and the light of the alignment index image to assume predetermined positions within the field of an observation. The apparatus can be used for measuring protein concentration in the anterior chamber of the eye or as a split lamp microscope and enables easy alignment between itself and the eye being examined.

REFERENCES:
patent: 4702576 (1987-10-01), Magnante
patent: 4834527 (1989-05-01), Kobayashi

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