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Glaucoma: Overview01:25

Glaucoma: Overview

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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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視神経の頭部構造の変化

Dania A Rahal1, Darrin A McFall1, Muhammad Z Chauhan1

  • 1Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA.

Clinical ophthalmology (Auckland, N.Z.)
|September 4, 2025
PubMed
まとめ
この要約は機械生成です。

内視内注射 (IVI) は,視神経の頭部 (ONH) の深さをわずかに増加させる. 前回のIVIは,この変化と逆相関しており,グラウコマの進行に関連する累積的な構造的効果を示唆しています.

キーワード:
深さインジェクションイントラビトリア視神経ピット

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科学分野:

  • 眼科について
  • 網膜イメージング
  • グラウコマ 研究

背景:

  • 網膜内注射 (IVI) は網膜疾患の一般的な治療法です.
  • 視神経の頭部 (ONH) とブルック膜の開口 (BMO) に対するIVIの急性解剖学的効果は完全に理解されていません.
  • 緑内障におけるONHの役割を考えると,これらの変化を理解することは極めて重要です.

研究 の 目的:

  • 抗VEGF IVI後のBMOとONH穴の深さの急性解剖学的変化を評価する.
  • 前回の注射歴を含む,これらの解剖学的変化に影響を与える要因を調査する.

主な方法:

  • 抗VEGFをIVで投与した51人の患者による前向きな研究.
  • 高解像度スペクトル領域光学コヒーレンストモグラフィー (OCT) 投薬前および投薬後のイメージング
  • ONH穴の深さとBMOの変化の測定

主要な成果:

  • IVI後のONH穴深さの統計的に有意な平均増加 31.57 ± 24.36 μm (p < 0.001).
  • 以前のIVIの数は,穴の深さの変化と有意な逆相関を示した (r = -0.369,p = 0.004).
  • 他の患者変数やIOP上昇と穴の深さ/BMOの変化との間に有意な関連性が見つかりませんでした.

結論:

  • 静脈内注射は,ONHの穴の深さのわずかな急激な増加と関連しています.
  • 繰り返されたIVIは,ONH構造に累積的な影響を及ぼします.
  • これらの構造的変化は,グラウコマ症の進行に関連し,さらなる調査を正当化します.