[Determination of arteriovenous transit time of the choroid with indocyanine green].
We present a very sensitive, yet light-weight videosystem for infrared angiography with Indocyanine green. This system was used to quantify for the first time the choroidal arteriovenous passage time (chAVP) in eight healthy volunteers and eight patients with retinal detachment pre- and postoperatively. The mean normal value of the chAVP was measured to be 3,46 + 0,59 sec. Patients with retinal detachment could be divided into two groups. The chAVP did not change significantly (p = 0,298) from 3,37 + 0,55 sec. to 3,48 + 0,54 sec. in six patients (mean age 49,7 + 5,4 years), who had a simple scleral buckling procedure. In two further patients (63 and 70 years), who had been operated with an encircling band, a postoperative chAVP-delay of 0,72 and 1,48 sec. was detected. This verification of the clinically expected obstruction of choroidal venous outflow after encircling bands emphasizes the validity of the method. Nevertheless, since the procedure is time consuming and detects only marked disturbances, it must be taken as one basic step in the search for the quantification of the choroidal circulation.
Scheider
A
A
Augenklinik Ludwig-Maximilians-Universität, München.
Korabjelnikoff
E
E
D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity / Q000502:physiology; D002829:Choroid / Q000098:blood supply*; D005260:Female; D005451:Fluorescein Angiography / Q000295:instrumentation*; D005500:Follow-Up Studies; D006801:Humans; D007208:Indocyanine Green; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis; D012016:Reference Values; D012163:Retinal Detachment / Q000175:diagnosis* / Q000601:surgery
D007208:Indocyanine Green
Bestimmung der arteriovenösen Passagezeit der Aderhaut mit Indozyaningrün.