scholarly journals Spectral Doppler Study of Hemodynamic Alterations in Central Retinal Artery (CRA) and Posterior Ciliary Artery (PCA) in Diabetics

2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Mahesh Mahesh ◽  
Aishwarya K C ◽  
Shrunga Tejasvi ◽  
Prasanthi Prasanthi ◽  
Prajnha U P
Keyword(s):  
Central Retinal Artery ◽  
Posterior Ciliary Artery ◽  
Doppler Study ◽  
Spectral Doppler ◽  
Retinal Artery ◽  
Ciliary Artery

scholarly journals A Case of Incomplete Central Retinal Artery Occlusion Associated with Short Posterior Ciliary Artery Occlusion

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Shinji Makino ◽  
Mikiko Takezawa ◽  
Yukihiro Sato
Keyword(s):  
Visual Acuity ◽  
Optic Disc ◽  
Ophthalmic Artery ◽  
Central Retinal Artery Occlusion ◽  
Retinal Artery Occlusion ◽  
Artery Occlusion ◽  
Central Retinal Artery ◽  
Posterior Ciliary Artery ◽  
Retinal Artery ◽  
Ciliary Artery

To our knowledge, incomplete central retinal artery occlusion associated with short posterior ciliary artery occlusion is extremely rare. Herein, we describe a case of a 62-year-old man who was referred to our hospital with of transient blindness in his right eye. At initial examination, the patient’s best-corrected visual acuity was 18/20 in the right eye. Fundus examination showed multiple soft exudates around the optic disc and mild macular retinal edema in his right eye; however, a cherry red spot on the macula was not detected. Fluorescein angiography revealed delayed dye inflow into the nasal choroidal hemisphere that is supplied by the short posterior ciliary artery. The following day, the patient’s visual acuity improved to 20/20. Soft exudates around the optic disc increased during observation and gradually disappeared. His hemodynamic parameters revealed subclavian steal syndrome as examined by cervical ultrasonography and digital subtraction angiography. We speculate that his transient blindness was due to ophthalmic artery spasms. In this particular case, spasms of the ophthalmic artery and occlusion of the short posterior ciliary artery occurred simultaneously. As the short posterior ciliary artery branches from the ophthalmic artery, the anatomical location of the lesion might be near the branching of both arteries.

scholarly journals Associating the biomarkers of ocular blood flow with lamina cribrosa parameters in normotensive glaucoma suspects. Comparison to glaucoma patients and healthy controls

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0248851
Author(s):  
Patrycja Krzyżanowska-Berkowska ◽  
Karolina Czajor ◽  
D. Robert Iskander
Keyword(s):  
Blood Flow ◽  
Ophthalmic Artery ◽  
Lamina Cribrosa ◽  
Ocular Blood Flow ◽  
Central Retinal Artery ◽  
Healthy Controls ◽  
Mean Flow ◽  
Posterior Ciliary Artery ◽  
Retinal Artery ◽  
Ciliary Artery

Purpose To evaluate association between ocular blood flow biomarkers and lamina cribrosa parameters in normotensive glaucoma suspects compared to glaucoma patients and healthy controls. Methods A total of 211 subjects (72 normotensive glaucoma suspects, 70 with primary open-angle glaucoma and 69 controls) were included. Ocular blood flow biomarkers in ophthalmic artery, central retinal artery, as well as in nasal and temporal short posterior ciliary arteries were measured using colour Doppler imaging. Lamina cribrosa position was assessed by measuring its depth, deflection depth, lamina cribrosa shape index and its horizontal equivalent (LCSIH) on B-scan images obtained using optical coherence tomography. Results Ocular blood flow biomarkers in glaucoma patients were statistically significantly reduced when compared to healthy controls in peak systolic velocity (PSV) (P = 0.001 in ophthalmic artery and P<0.001 in central retinal artery) and mean flow velocity (Vm) (P = 0.008 in ophthalmic artery and P = 0.008 in central retinal artery), but not statistically significantly different to that of glaucoma suspects except for PSV in central retinal artery (P = 0.011). Statistically significant correlations corrected for age, central corneal thickness and intraocular pressure were found in glaucoma patients between LCSIH and end diastolic velocity of central retinal artery (P = 0.011), and of nasal short posterior ciliary artery (P = 0.028), and between LCSIH and Vm of central retinal artery (P = 0.011) and of nasal short posterior ciliary artery (P = 0.007). No significant correlations were observed between these parameters in glaucoma suspects and healthy controls. Conclusions Impaired ocular blood flow associated with the deformation of lamina cribrosa was found in glaucoma patients, whereas glaucoma suspects had similar lamina cribrosa shape to glaucoma patients but that deformation was not associated with ocular blood flow biomarkers.

Color Doppler Imaging of the Retrobulbar Circulation in Age-Related Macular Degeneration

1998 ◽  
Vol 8 (4) ◽  
pp. 234-238 ◽  
Author(s):  
B.M. Hosal ◽  
G. Karakoç ◽  
E. GÜrsel ◽  
M. Çamur
Keyword(s):  
Ophthalmic Artery ◽  
Color Doppler ◽  
Color Doppler Imaging ◽  
Age Related Macular Degeneration ◽  
Doppler Imaging ◽  
Posterior Ciliary Artery ◽  
Age Related ◽  
Retinal Artery ◽  
Blood Flow Velocities ◽  
Ciliary Artery

Purpose The aim of this study was to assess hemodynamic changes in the retrobulbar circulation in patients with age-related macular degeneration (ARMD). Methods Color Doppler imaging was used to calculate blood flow velocities and vascular resistance of the central retinal artery, short posterior ciliary artery and ophthalmic artery in patients with ARMD and in control patients. Results The average peak systolic velocity was significantly lower in the central retinal artery (p < 0.001), posterior ciliary artery (p < 0.001) and ophthalmic artery (p < 0.01) of the patients with ARMD than in control. End-diastolic blood flow velocities in the retrobulbar arteries of ARMD patients were also significantly lower (p < 0.001) than controls. Gosling's pulsatility index was significantly higher in the ophthalmic artery (p<0.01) and posterior ciliary artery (p < 0.001) of eyes with ARMD. In addition, the resistivity index was significantly higher in all retrobulbar arteries (p < 0.001) of these patients. Conclusions The hemodynamic abnormalities in the retrobulbar circulation suggest that vascular impairment may play a role in the pathogenesis of ARMD.

Bilateral Central Retinal Artery Occlusion (CRAO) after Opium Consumption

2014 ◽  
Vol 3 (9) ◽  
Author(s):  
L. Rezaei ◽  
H. Ghanbari ◽  
M. Taghaodi ◽  
M. Malekahmadi ◽  
M. Adinevand ◽  
...  
Keyword(s):  
Central Retinal Artery Occlusion ◽  
Retinal Artery Occlusion ◽  
Artery Occlusion ◽  
Central Retinal Artery ◽  
Retinal Artery
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