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Optical coherence tomography angiography of the macular microcirculation in acute primary angle closure treated with phacoemulsification

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Abstract

Purpose

To measure the changes of macular microcirculation in cases with unilateral acute primary angle closure (APAC) who were managed by phacoemulsification.

Methods

Patients with unilateral APAC and managed by phacoemulsification were enrolled. The contralateral unaffected eyes were served as fellow group, and normal individuals were recruited as control group. Optical coherence tomography angiography (OCT-A) was performed to analyze the macular whole image vessel density (wiVD) and parafoveal vessel density (pfVD). The retinal nerve fiber layer (RNFL) and ganglion cell complex (GCC) thicknesses were assessed using spectral-domain optical coherence tomography.

Results

A total of 36 APAC patients and 35 eyes from 35 normal individuals were recruited. In the APAC eyes, the mean wiVD (42.1% ± 3.7%) and pfVD (45.2% ± 3.8%) in the superficial layers (wiVD-SL and pfVD-SL) were both significantly reduced, compared to fellow eyes (45.7% ± 3.1%, 48.7% ± 3.1%) and control eyes (44.4% ± 4.7%, 47.4% ± 5.1%) (P < 0.05). They were all statistically correlated with RNFL, GCC, visual field pattern standard deviation (PSD), and mean deviation (MD).

Conclusion

The macular OCT-A parameters including wiVD-SL and pfVD-SL were significantly reduced in the eyes with APAC compared to the fellow unaffected eyes and normal control eyes. They were correlated well with RNFL, GCC, PSD and MD. The macular vessel density parameters may help monitor the progression of APAC.

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Data availability

The datasets used in this study are available from the corresponding author on reasonable request.

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Funding

The study was supported by the Research Initiation Project of the Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University and Nature and Science Foundation of Zhejiang Province. (Grant No. KYQD202001; Grant No. LQ19H120002).

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Authors and Affiliations

  1. School of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, 270 Xueyuanxi Road, Wenzhou, Zhejiang Province, China

    Lin Fu, Jia Fang, Junbo Liu, Shu Mei Wen, Li Jun Shen, Jun Wang, Guan Shun Yu & Li Nie

  2. Department of Ophthalmology, University of Hong Kong, Hong Kong SAR, China

    Yau Kei Chan

Authors
  1. Lin Fu
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  2. Yau Kei Chan
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  3. Jia Fang
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  4. Junbo Liu
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  6. Li Jun Shen
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  7. Jun Wang
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  9. Li Nie
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Contributions

Nie L, Wen SM, Shen LJ and FU L designed this study; Fang J, Liu JB, and Wang J provided and collected the data; Yu GS and FU L analyzed and interpreted the data; Nie L, Chan YK and FU L wrote and revised the paper. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Li Nie.

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Conflicts of interest

Fu L, None; Chan YK, None; Fang J, None; Liu JB, None; Wen SM, None; Shen LJ, None; Wang J, None; Yu GS, None; Nie L, None.

Ethical approval

This study was in accordance with the tenets of the Declaration of Helsinki and approved by the Institutional Review Board of Eye hospital, Wenzhou Medical University.

Informed consent

Informed consents were obtained from all participants. They signed the informed consents and agreed to publish their data and photographs.

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Fu, L., Chan, Y.K., Fang, J. et al. Optical coherence tomography angiography of the macular microcirculation in acute primary angle closure treated with phacoemulsification. Int Ophthalmol 42, 1781–1788 (2022). https://doi.org/10.1007/s10792-021-02175-4

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  • DOI: https://doi.org/10.1007/s10792-021-02175-4

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