TY - JOUR
T1 - The Application of Optical Coherence Tomography Angiography in Systemic Hypertension
T2 - A Meta-Analysis
AU - Tan, Wilson
AU - Yao, Xinwen
AU - Le, Thu Thao
AU - Tan, Anna C.S.
AU - Cheung, Carol Y.
AU - Chin, Calvin Woon Loong
AU - Schmetterer, Leopold
AU - Chua, Jacqueline
N1 - Publisher Copyright:
© 2021 Tan, Yao, Le, Tan, Cheung, Chin, Schmetterer and Chua.
PY - 2021/11/8
Y1 - 2021/11/8
N2 - Objective: Multiple studies have compared various optical coherence tomography angiography (OCTA) parameters in participants with systemic hypertension vs. controls and have presented discordant findings. We conducted a meta-analysis to pool together data from different studies to generate an overall effect size and find out whether OCTA parameter(s) significantly differed in participants with systemic hypertension as compared to controls. Methods: We conducted a literature search through a search of electronic databases to identify studies before 19 June 2021, which compared OCTA parameters in non-diabetic participants with systemic hypertension vs. controls. If the OCTA parameter had a minimum number of 3 studies that analyzed it, the mean difference between participants with systemic hypertension and controls were analyzed using a random-effects model. Results: We identified 11 eligible studies. At the macula, 9 studies analyzed vessel density at the superficial capillary plexus (SVD), 7 analyzed vessel density at the deep capillary plexus (DVD), and 6 analyzed the area of the superficial foveal avascular zone (FAZ). Participants with systemic hypertension had significantly lower SVD (standardized mean difference [SMD], −0.50 [−0.70, −0.30], P < 0.00001, I2 = 63%), lower DVD (SMD, −0.38 [−0.64, −0.13], P = 0.004, I2 = 67%) and larger superficial FAZ (SMD, 0.32 [0.04, 0.61], P = 0.020, I2 = 77%). Conclusion: The eyes of people with systemic hypertension have robustly lower superficial and deep vascular densities at the macula when compared to control eyes. Our results suggest that OCTA can provide information about pre-clinical microvascular changes from systemic hypertension.
AB - Objective: Multiple studies have compared various optical coherence tomography angiography (OCTA) parameters in participants with systemic hypertension vs. controls and have presented discordant findings. We conducted a meta-analysis to pool together data from different studies to generate an overall effect size and find out whether OCTA parameter(s) significantly differed in participants with systemic hypertension as compared to controls. Methods: We conducted a literature search through a search of electronic databases to identify studies before 19 June 2021, which compared OCTA parameters in non-diabetic participants with systemic hypertension vs. controls. If the OCTA parameter had a minimum number of 3 studies that analyzed it, the mean difference between participants with systemic hypertension and controls were analyzed using a random-effects model. Results: We identified 11 eligible studies. At the macula, 9 studies analyzed vessel density at the superficial capillary plexus (SVD), 7 analyzed vessel density at the deep capillary plexus (DVD), and 6 analyzed the area of the superficial foveal avascular zone (FAZ). Participants with systemic hypertension had significantly lower SVD (standardized mean difference [SMD], −0.50 [−0.70, −0.30], P < 0.00001, I2 = 63%), lower DVD (SMD, −0.38 [−0.64, −0.13], P = 0.004, I2 = 67%) and larger superficial FAZ (SMD, 0.32 [0.04, 0.61], P = 0.020, I2 = 77%). Conclusion: The eyes of people with systemic hypertension have robustly lower superficial and deep vascular densities at the macula when compared to control eyes. Our results suggest that OCTA can provide information about pre-clinical microvascular changes from systemic hypertension.
KW - biological marker
KW - biomarker
KW - blood pressure
KW - hypertension
KW - OCTA
KW - optical coherence tomography angiography
KW - retina
UR - http://www.scopus.com/inward/record.url?scp=85119843476&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85119843476&partnerID=8YFLogxK
U2 - 10.3389/fmed.2021.778330
DO - 10.3389/fmed.2021.778330
M3 - Review article
AN - SCOPUS:85119843476
SN - 2296-858X
VL - 8
JO - Frontiers in Medicine
JF - Frontiers in Medicine
M1 - 778330
ER -