Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography
Introduction: There has been a growing interest in the role of vascular factors in glaucoma. Studies have looked at the characteristics of macular choriocapillaris in patients with glaucoma but with conflicting results. Our study aims to use swept-source optical coherence tomography angiography (SS-...
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Engineering::Bioengineering Science::Medicine Primary Open-Angle Glaucoma Choroid Lun, Katherine Sim, Yin Ci Chong, Rachel Wong, Damon Tan, Bingyao Husain, Rahat Aung, Tin Sng, Chelvin C. A. Schmetterer, Leopold Chua, Jacqueline Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
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Introduction: There has been a growing interest in the role of vascular factors in glaucoma. Studies have looked at the characteristics of macular choriocapillaris in patients with glaucoma but with conflicting results. Our study aims to use swept-source optical coherence tomography angiography (SS-OCTA) to evaluate macular choriocapillaris metrics in normal participants and compare them with patients with early primary open-angle glaucoma (POAG) (mean deviation better than −6dB). Methods: In this prospective, observational, cross-sectional study, 104 normal controls (157 eyes) and 100 patients with POAG (144 eyes) underwent 3 mm × 3mm imaging of the macula using the Plex Elite 9000 (Zeiss Meditec, Dublin, CA, USA). Choriocapillaris OCTA images were extracted from the device’s built-in review software and were subsequently evaluated for the density and size of choriocapillaris flow deficits. Results: After adjusting for confounding factors, the density of flow deficits was independently higher in those aged 53 years and above (P ≤ 0.024) whereas the average flow deficit size was significantly larger in those aged 69 years and above (95% CI = 12.39 to 72.91; P = 0.006) in both normal and POAG patients. There were no significant differences in the density of flow deficits (P = 0.453) and average flow deficit size (P = 0.637) between normal and POAG participants. Conclusion: Our study found that macular choriocapillaris microvasculature on SS-OCTA is unaltered by subjects with POAG. This suggests that OCTA macular choriocapillaris may not be potentially helpful in differentiating early glaucoma from healthy eyes. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Lun, Katherine Sim, Yin Ci Chong, Rachel Wong, Damon Tan, Bingyao Husain, Rahat Aung, Tin Sng, Chelvin C. A. Schmetterer, Leopold Chua, Jacqueline |
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Article |
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Lun, Katherine Sim, Yin Ci Chong, Rachel Wong, Damon Tan, Bingyao Husain, Rahat Aung, Tin Sng, Chelvin C. A. Schmetterer, Leopold Chua, Jacqueline |
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Lun, Katherine |
title |
Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
title_short |
Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
title_full |
Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
title_fullStr |
Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
title_full_unstemmed |
Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
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investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography |
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2023 |
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https://hdl.handle.net/10356/164511 |
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sg-ntu-dr.10356-1645112023-12-29T06:45:18Z Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography Lun, Katherine Sim, Yin Ci Chong, Rachel Wong, Damon Tan, Bingyao Husain, Rahat Aung, Tin Sng, Chelvin C. A. Schmetterer, Leopold Chua, Jacqueline School of Chemical and Biomedical Engineering Singapore National Eye Centre Singapore Eye Research Institute Duke-NUS Medical School SERI-NTU Advanced Ocular Engineering (STANCE) Engineering::Bioengineering Science::Medicine Primary Open-Angle Glaucoma Choroid Introduction: There has been a growing interest in the role of vascular factors in glaucoma. Studies have looked at the characteristics of macular choriocapillaris in patients with glaucoma but with conflicting results. Our study aims to use swept-source optical coherence tomography angiography (SS-OCTA) to evaluate macular choriocapillaris metrics in normal participants and compare them with patients with early primary open-angle glaucoma (POAG) (mean deviation better than −6dB). Methods: In this prospective, observational, cross-sectional study, 104 normal controls (157 eyes) and 100 patients with POAG (144 eyes) underwent 3 mm × 3mm imaging of the macula using the Plex Elite 9000 (Zeiss Meditec, Dublin, CA, USA). Choriocapillaris OCTA images were extracted from the device’s built-in review software and were subsequently evaluated for the density and size of choriocapillaris flow deficits. Results: After adjusting for confounding factors, the density of flow deficits was independently higher in those aged 53 years and above (P ≤ 0.024) whereas the average flow deficit size was significantly larger in those aged 69 years and above (95% CI = 12.39 to 72.91; P = 0.006) in both normal and POAG patients. There were no significant differences in the density of flow deficits (P = 0.453) and average flow deficit size (P = 0.637) between normal and POAG participants. Conclusion: Our study found that macular choriocapillaris microvasculature on SS-OCTA is unaltered by subjects with POAG. This suggests that OCTA macular choriocapillaris may not be potentially helpful in differentiating early glaucoma from healthy eyes. Agency for Science, Technology and Research (A*STAR) Nanyang Technological University National Medical Research Council (NMRC) National Research Foundation (NRF) Published version This work was funded by grants from the National Medical Research Council (CG/C010A/2017_SERI; OFLCG/004c/2018- 00; MOH-000249-00; MOH-000647-00; MOH-001001-00; MOH-001015-00; MOH-000500-00; and MOH-000707-00), National Research Foundation Singapore (NRF2019- THE002-0006 and NRF-CRP24-2020-0001), A∗ STAR (A20H4b0141), Singapore Eye Research Institute, Nanyang Technological University [SERI-NTU Advanced Ocular Engineering (STANCE) Program], and SERI-Lee Foundation (LF1019-1) Singapore. 2023-01-30T05:14:09Z 2023-01-30T05:14:09Z 2022 Journal Article Lun, K., Sim, Y. C., Chong, R., Wong, D., Tan, B., Husain, R., Aung, T., Sng, C. C. A., Schmetterer, L. & Chua, J. (2022). Investigating the macular choriocapillaris in early primary open-angle glaucoma using swept-source optical coherence tomography angiography. Frontiers in Medicine, 9, 999167-. https://dx.doi.org/10.3389/fmed.2022.999167 2296-858X https://hdl.handle.net/10356/164511 10.3389/fmed.2022.999167 36213634 2-s2.0-85140617078 9 999167 en CG/C010A/2017_SERI OFLCG/004c/2018- 00 MOH-000249-00 MOH-000647-00 MOH-001001-00 MOH-001015-00 MOH-000500-00 MOH-000707-00 NRF2019-THE002-0006 NRF-CRP24-2020-0001 A20H4b0141 LF1019-1 Frontiers in Medicine © 2022 Lun, Sim, Chong, Wong, Tan, Husain, Aung, Sng, Schmetterer and Chua. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. application/pdf |