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Retinal blood flow reduction in normal-tension glaucoma with single-hemifield damage by Doppler optical coherence tomography.
- Source :
-
The British journal of ophthalmology [Br J Ophthalmol] 2021 Jan; Vol. 105 (1), pp. 124-130. Date of Electronic Publication: 2020 Mar 26. - Publication Year :
- 2021
-
Abstract
- Aims: To evaluate the associations between retinal blood flow (RBF) and optical coherence tomography (OCT) structural measurements in normal-tension glaucoma (NTG) eyes with single-hemifield visual field (VF) damage by the Doppler OCT.<br />Methods: The Doppler OCT was used to measure temporal artery (TA) RBF and temporal vein (TV) RBF. Retinal nerve fibre layer thickness (RNFLT) was measured by spectral-domain OCT.<br />Results: Forty-three consecutive eyes of 43 patients with NTG with VF defect confined to a single hemifield and 24 eyes of 24 age-matched healthy subjects were studied. TA and TV RBF and RNFLT were reduced in the damaged hemisphere compared with the normal hemisphere (mean (SD), 3.61 (1.68) vs 5.86 (2.59) µL/min, p<0.001; 5.61 (2.51) vs 6.94 (2.83) µL/min, p=0.010; 69.0 (19.7) vs 99.7 (22.8) µm, p<0.001). Those values in the normal hemisphere of NTG eyes also decreased compared with the healthy hemisphere of the healthy eyes (8.40 (3.36) µL/min, p<0.001; 9.28 (4.47) µL/min, p<0.002; 122.8 (20.2) µm, p<0.001). Multivariate model showed that normal and damaged hemispheres and RNFLT were associated with RBF reduction. In addition, the RBF in the normal hemisphere was lower than that in the healthy hemisphere even after adjusting for RNFLT.<br />Conclusion: In NTG eyes with single-hemifield damage, the RBF was significantly reduced in the damaged hemisphere compared with the normal one. The RBF decreased in the normal and damaged hemispheres of NTG eyes compared with the healthy hemisphere independent from RNFLT.<br />Competing Interests: Competing interests: Akitoshi Yoshida has a patent for the Doppler OCT system.<br /> (© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.)
- Subjects :
- Aged
Arterial Pressure physiology
Blood Flow Velocity physiology
Female
Gonioscopy
Hemianopsia diagnosis
Humans
Intraocular Pressure physiology
Low Tension Glaucoma diagnosis
Male
Middle Aged
Nerve Fibers pathology
Optic Disk blood supply
Regional Blood Flow physiology
Retinal Ganglion Cells pathology
Tomography, Optical Coherence
Tonometry, Ocular
Ultrasonography, Doppler
Visual Field Tests
Visual Fields physiology
Hemianopsia physiopathology
Low Tension Glaucoma physiopathology
Retinal Vessels physiopathology
Subjects
Details
- Language :
- English
- ISSN :
- 1468-2079
- Volume :
- 105
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- The British journal of ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 32217540
- Full Text :
- https://doi.org/10.1136/bjophthalmol-2019-315616