Ophthalmic device to diagnose the eye fundus

Details Ophthalmic device to diagnose the eye fundus Ophthalmic device to diagnose the eye fundus

1980-09-12

1983-09-06

Howell, Kyle L.

Surgery

Truss

Pad

128691, 351 7, 351210, A61B 300

Patent

active

044023251

ABSTRACT:
The present invention provides an ophthalmic device to diagnose the circulation of blood in an eye fundus by producing a pair of plethysmograms for synchronized comparison. A pair of fiber optic conduits are attached to a coupler that can be sealingly affixed to the exterior surface of the cornea of an eye. The coupler can be attached to the exterior surface of the eye by the application of subatmospheric pressure within the coupler. Light is introduced on the axis of the pupil through a central light exit region that is physically small enough relative to a dilated pupil to prevent the reflection of light from the iris. The light reflected from the eye fundus is received in a peripheral light receiving region. The light signals are converted into electrical voltage levels that are ultimately used to produce a visual display of the plethysmograms.

REFERENCES:
patent: 3016000 (1962-01-01), Noyori
patent: 3308810 (1967-03-01), Galin
patent: 3862627 (1975-01-01), Hans
patent: 3903871 (1975-09-01), Chisum et al.
patent: 3925793 (1975-12-01), Matsumura et al.
patent: 3929124 (1975-12-01), Yablonski et al.
patent: 3936844 (1976-02-01), Matsumura
patent: 3948248 (1976-04-01), Zuckerman
patent: 4068932 (1978-01-01), Ohta
patent: 4157708 (1979-06-01), Imura
patent: 4265519 (1981-05-01), Pomerantzeff
patent: 4282882 (1981-08-01), Langham
Weast, Robert C., CRC Handbook of Chem. and Phy., 52nd Edition, 1971-1972, p. E-186.

Affiliated with

Also associated with

Rating

Ophthalmic device to diagnose the eye fundus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ophthalmic device to diagnose the eye fundus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophthalmic device to diagnose the eye fundus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1587260