[Color Doppler imaging of the retrobulbar circulation in non-exudative and exudative age-related macular degeneration].
OBJECTIVE
To study ocular perfusion in the ophthalmic artery, central retinal artery, nasal and temporal posterior ciliary : arteries in non-exudative and exudative age-related macular degeneration.


METHODS
Twenty five subjects with non-exudative age-related macular degeneration were compared to twenty five subjects with exudative age-related macular degeneration and to twenty five age-matched control subjects. Color Doppler imaging measured peak systolic velocity (PSV) and end diastolic velocity (EDV) in the ophthalmic artery, central retinal artery, nasal and temporal posterior ciliary arteries of one eye. The resistivity index (RI) and the pulsatility index (PI) were calculated.


RESULTS
There were statistically significant differences between: subjects with non-exudative age-related macular degeneration and subjects with exudative age-related macular degeneration in EDV, RI and PI in the ophthalmic artery and PSV in the temporal posterior ciliary artery, subjects with non-exudative age-related macular degeneration and control subjects in RI in central retinal artery, subjects with non-exudative age-related macular degeneration and control subjects in RI and PI in nasal posterior ciliary artery, subjects with exudative age-related macular degeneration and control subjects in PI in nasal posterior ciliary artery.


CONCLUSIONS
The study results showed reduced ocular blood flow in patients with non-exudative age-related macular degeneration compared to patients with exudative age-related macular degeneration and to control subjects. The higher RI in central retinal artery in non-exudative age-related macular degeneration compared to control subjects, suggest there may be a more generalized perfusion abnormality beyond the choroid.
Nowak
Izabela
I
Z Kliniki Chorób Oczu Katedry Chorób Oczu Uniwersytetu Medycznego w Lodzi.
Gajewicz
Witold
W
Stefańczyk
Ludomir
L
Omulecki
Wojciech
W
D016022:Case-Control Studies; D018618:Echocardiography, Doppler, Color; D005122:Exudates and Transudates; D005260:Female; D006801:Humans; D008268:Macular Degeneration / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging* / Q000473:pathology; D012039:Regional Blood Flow; D012161:Retinal Artery / Q000000981:diagnostic imaging* / Q000473:pathology; D013699:Temporal Arteries / Q000000981:diagnostic imaging* / Q000473:pathology