Anterior Optic Nerve Head Perfusion is Dependent on Adjacent Parapapillary Choroidal perfusion

Kyoung Min Lee, Joon Mo Kim, Eun Ji Lee, Tae Woo Kim

Research output: Contribution to journalArticle

Abstract

Recent studies reported that parapapillary microvascular dropout (MvD) was significantly associated with glaucoma and glaucoma progression. To understand the clinical relevance/importance of MvD, it is essential to know the exact vascular anatomy of optic nerve head (ONH). Although it is known that parapapillary choroid and the deep ONH structure including prelaminar tissue are both supplied by branches of short posterior ciliary artery, it remains controversial whether parapapillary choroid provides a major contribution to the prelaminar tissue perfusion. This study investigated perfusion within and around the ONH using indocyanine green angiography. Thirty-three eyes from 33 patients with primary open-angle glaucoma and 10 eyes from 10 normal subjects were included. The temporal sequence of dye appearance in various tissues was analyzed. We also sought the microvessels directly responsible for blood supply to the prelaminar tissue. The perfusion of the prelaminar tissue, which occurred in a sectoral fashion, was dependent on the dye appearance in the adjacent parapapillary choroid. In addition, microvessels crossing over the optic disc margin from the parapapillary choroid to the ONH were found. The findings suggest that the centripetal flow from the parapapillary choroid is an important source of prelaminar tissue perfusion.

Original languageEnglish
Article number10999
JournalScientific Reports
Volume9
Issue number1
DOIs
StatePublished - 1 Dec 2019

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Optic Disk
Choroid
Perfusion
Microvessels
Glaucoma
Coloring Agents
Ciliary Arteries
Indocyanine Green
Blood Vessels
Anatomy
Angiography

Cite this

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abstract = "Recent studies reported that parapapillary microvascular dropout (MvD) was significantly associated with glaucoma and glaucoma progression. To understand the clinical relevance/importance of MvD, it is essential to know the exact vascular anatomy of optic nerve head (ONH). Although it is known that parapapillary choroid and the deep ONH structure including prelaminar tissue are both supplied by branches of short posterior ciliary artery, it remains controversial whether parapapillary choroid provides a major contribution to the prelaminar tissue perfusion. This study investigated perfusion within and around the ONH using indocyanine green angiography. Thirty-three eyes from 33 patients with primary open-angle glaucoma and 10 eyes from 10 normal subjects were included. The temporal sequence of dye appearance in various tissues was analyzed. We also sought the microvessels directly responsible for blood supply to the prelaminar tissue. The perfusion of the prelaminar tissue, which occurred in a sectoral fashion, was dependent on the dye appearance in the adjacent parapapillary choroid. In addition, microvessels crossing over the optic disc margin from the parapapillary choroid to the ONH were found. The findings suggest that the centripetal flow from the parapapillary choroid is an important source of prelaminar tissue perfusion.",
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Anterior Optic Nerve Head Perfusion is Dependent on Adjacent Parapapillary Choroidal perfusion. / Lee, Kyoung Min; Kim, Joon Mo; Lee, Eun Ji; Kim, Tae Woo.

In: Scientific Reports, Vol. 9, No. 1, 10999, 01.12.2019.

Research output: Contribution to journalArticle

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