Ophthalmological diagnosis apparatus

Details Ophthalmological diagnosis apparatus Ophthalmological diagnosis apparatus

1990-03-05

1991-12-24

Smith, Ruth S.

Surgery

Truss

Pad

128691, 356 285, 351206, 351211, 351221, A61B 310

Patent

active

050743074

ABSTRACT:
An ophthalmological diagnosis apparatus is provided in which a laser beam is projected at a region of the eye fundus to produce a laser speckle pattern formed by light scattered from tissues of the eye fundus. Movement of the speckle pattern is detected to produce a speckle signal which is photon-counted as photoelectric pulses per unit sampling time. A rate of fluctation of correlation function data is evaluated, on the basis of which the radius of the detecting aperture is determined. This makes it possible to sample accurate data with good reproducibility.

REFERENCES:
patent: 4402601 (1983-09-01), Riva
patent: 4743107 (1988-05-01), Aizu et al.
patent: 4979818 (1990-12-01), Kobayashi

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