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Abstract #81071 Published in IGR 20-3

Correlation between Basal Macular Circulation and Following Glaucomatous Damage in Progressed High-Tension and Normal-Tension Glaucoma

Lee CY; Liu CH; Chen HC; Sun CC; Yao YP; Chao SC
Ophthalmic Research 2019; 62: 46-54

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OBJECTIVES: Evaluate the correlation between basal macular circulation and late structural damage in progressed high-tension glaucoma (HTG) and normal-tension glaucoma (NTG) via optical coherence tomography angiography (OCTA). METHODS: Patients who received an OCTA examination were divided into progressed HTG, progressed NTG, and well-controlled HTG (control) groups. Superficial macular vessel density (SmVD), deep macular vessel density (DmVD), foveal avascular zone (FAZ), and flow area of the outer retina and choriocapillaris were obtained by one OCTA device. Associations between macular angiography and glaucoma parameters, including the visual field, retinal nerve fiber layer, and ganglion cell complex, were analyzed. RESULTS: A total of 60 eyes from 60 patients were enrolled. The progressed HTG and NTG groups had lower SmVD than the control group, while the progressed NTG group had lower DmVD and a larger FAZ than the control group. The flow area of the outer retina in the progressed HTG group was lower than that of the control. A significant correlation between SmVD and glaucoma parameters was found in the progressed HTG group, while a similar correlation between SmVD and DmVD to glaucoma parameters was observed in the progressed NTG group. CONCLUSION: The progressed HTG and NTG patients showed an impaired vascular intake before significant disease development compared to well-controlled cases.

Full article

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Classification:

9.2.4 Normal pressure glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
6.11 Bloodflow measurements (Part of: 6 Clinical examination methods)
6.9.2.2 Posterior (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis > 6.9.2 Optical coherence tomography)
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)

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