Doppler ultrasonography of the ophthalmic and central retinal vessels.
B-Scan-guided, pulsed Doppler ultrasonography of central retinal vessels and ophthalmic arteries of 72 normal subjects gave the following average peak flow velocities: central retinal artery, 9.5 +/- 3.1 cm/s; central retinal vein, 5.7 +/- 1.5 cm/s; and ophthalmic artery, 31.6 +/- 9.0 cm/s. Doppler shifts in the central retinal vessels were absent at intraocular pressures above 80 mm Hg. Ophthalmic artery systolic, middiastolic, and end-diastolic velocities significantly declined as a function of age. The technique is independent of the status of the ocular media, is noninvasive, requires little time, and causes minimal discomfort.
Guthoff
R F
RF
Hamburg University Eye Hospital, Federal Republic of Germany.
Berger
R W
RW
Winkler
P
P
Helmke
K
K
Chumbley
L C
LC
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001783:Blood Flow Velocity; D001794:Blood Pressure; D005123:Eye / Q000098:blood supply / Q000000981:diagnostic imaging; D006801:Humans; D007429:Intraocular Pressure; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D015203:Reproducibility of Results; D012161:Retinal Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D012169:Retinal Vein / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014463:Ultrasonography