Learning objectives
•Analisys of the hemodynamic parameters of the retrobulbar arteries at Color and Spectral Doppler US in patients with glaucoma and healthy control subjects.
•Assessment the diagnostic capacity of colour and energy Doppler Ultrasound with respect to glaucoma retrobulbar alterations.
Background
•Glaucoma is one of the most common and potentially severe ocular diseases.
It is one of the first causes of preventable blindness in western countries.
•Primary open-angle glaucoma (POAG): It is a chronic optic neuropathy of unknown origin,
characterized by a progressive loss of the axons of ganglional cells.
It is linked to an increase of the intra-ocular pressure (higher than 21 mmhg).
•Normal tension glaucoma (NTG): It is similar POAG but it is not related to an increase of intra-ocular pressure.
It is supposed...
Imaging findings OR Procedure details
Stadistical Analysis: fig.
16.
Result: fig.
17-29.
Conclusion
•Glaucoma,
both in its primary open-angle form and in normotensive glaucoma,
acts as a vascular disease resulting in significant haemodynamic alterations.
•Using Colour and Spectral Doppler US techniques we show that certain parameters of ocular blood flow suffer greater alterations in patients having primary open-angle glaucoma than those with normal tension glaucoma
•The Pulsatility Index,Resistance Index and Systole/diastole ratio are the parameters more likely to predict ocular blood flow alterations.
•Color and Spectral Doppler US is a safe,
non-invasive and reproducible technique of major importance...
References
•Galassi F,
Giambene B,
Varriale R.
Systemic vascular dysregulation and retrobulbar hemodynamics in normal-tension glaucoma.
Invest Ophthalmol Vis Sci.
2011 Jun 23;52(7):4467-71.
•Grieshaber MC,
Mozaffarieh M,
Flammer J.
What is the link between vascular dysregulation and glaucoma? Surv Ophthalmol 2007 Nov;52 Suppl 2:S144-S154.
•Huber KK,
Plange N,
Arend O,
Remky A.
Color Doppler imaging in normal pressure glaucoma patients.
Klin Monbl Augenheilkd.
2006 Feb;223(2):156-60.
•Tuulonen A,
Airaksinen PJ,
Erola E,
Forsman E,
Friberg K,
Kaila M,
et al.
The Finnish evidence-based guideline for open-angle glaucoma....
Personal Information
Gloria Torralbo Caballero
Unidad Centralde Radiodiagnóstico
Comunidad de Madrid
Hospital del Sureste
Ronda del Sur,
10
28500 Arganda del Rey.
Madrid
España
[email protected]
