Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1995-11-15
1997-01-14
Mai, Huy
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
351221, 396 18, A61B 314, A61B 310, G03B 2900
Patent
active
055945120
ABSTRACT:
An ophthalmological photographing instrument for fluorescent photograph comprising a device for irradiating illuminating light to a fundus of an eye to be tested, a device for projecting target luminous light to the eye, an image receiving device capable of receiving a reflection image of the target luminous flux reflected by the eye together with an image of the fundus of the eye, and observation/photographing means for receiving and photographing an image of the eye received by the image receiving device, wherein the ophthalmological photographing instrument further comprises a moving picture recording device into which the received image output coming from the image receiving device is input, a timer for counting time which has elapsed since the time when a fluorescent agent for the use of the fluorescent photograph has been injected into a vein, and a quenching device for reducing or quenching the target luminous flux after the passage of a predetermined time from the time when the injection of the fluorescent agent has been made, based on an output of the timer.
REFERENCES:
patent: 5181055 (1993-01-01), Sano et al.
Ohtsuka Hiroyuki
Yoneda Yutaka
Kabushiki Kaisha Topcon
Mai Huy
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