Ocular Blood Flow in Glaucoma Patients - the Leuven Eye Study
Correlation Between Submacular and Peripapillary Choroidal Tissue and Ocular Blood Flow in Glaucoma Patients
Glaucoma is a leading cause of blindness worldwide, whose treatment - intraocular pressure lowering - is only partially effective in preventing disease progression. Accordingly, other variables, such as ocular blood flow-related factors, have been implicated in disease pathogenesis. However, most findings involving vascular variables come from partial, small-scale studies. Furthermore, recent technological advances have identified a number of ocular blood flow variables that have yet to be tested in large scale trials. Therefore, a study that specifically aims at uncovering the role of vascular aspects in glaucoma is needed.
For this purpose, a cross-sectional, observational case-control study will be conducted in the University Hospitals Leuven. This will be the largest-yet study on the subject, involving more than 750 patients. This will allow the creation of a specific cohort of patients where the vascular aspects are thought to be particularly important (low-tension glaucoma). It will use the largest combination yet of vascular-related measuring techniques (dynamic contour tonometry, optic coherent tomography, colour Doppler imaging and retinal oximetry)
調査の概要
詳細な説明
- Demographic and clinical ophthalmology-related examination data will be collected, including intraocular pressure measurement using dynamic contour tonometry
- Visual field testing will be performed.
- Structural damage will be documented by a retinal nerve fiber layer analysis (through Heidelberg Retinal Tomograph)
- High Definition Optical coherent tomograph imaging of the submacular and peripapillary choroidal thickness will be performed.
- Color Doppler Imaging of the retrobulbar vessels will be performed, with analysis of the Doppler waveform (peak systolic, end diastolic velocities and resistivity index)
- Retinal oximetry will be performed with the analysis of the arterial and venous saturations of retinal vessels
研究の種類
入学 (実際)
連絡先と場所
研究場所
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Vlaams-Brabant
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Leuven、Vlaams-Brabant、ベルギー、3000 Leuven
- UZ Leuven
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
Inclusion Criteria:
- individuals over 18 years old
- willing to sign an informed consent and able to comply with the requirements of the study
- having no other ocular diseases besides glaucoma
Exclusion Criteria:
- history of ocular trauma
- intraocular surgery (except for cataract surgery)
- eye disease (except glaucoma)
- systemic diseases with ocular involvement like diabetes
研究計画
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
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原発開放隅角緑内障
-特徴的な視神経乳頭損傷（カップ/ディスク比、神経網膜縁の薄化、ノッチング、椎間板出血などに基づく）および視野欠損を有する患者で、> 21 mmHgのIOP測定が少なくとも1回必要
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正常眼圧緑内障
-特徴的な視神経乳頭損傷（カップ/ディスク比、神経網膜縁の薄化、ノッチング、椎間板出血などに基づく）および視野欠損を有する患者で、記録された最大IOPが21 mmHg未満
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Control
Healthy volunteers with no family history of glaucoma, an increased or asymmetrical cup/disc ratio or any other optic disc structural change (notching, disc hemorrhage) or an intraocular pressure (IOP) above 21 mmHg that could suggest possible glaucoma suspects.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
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Comparison of the Retrobulbar Arteries Doppler Waveform between glaucoma patients and healthy controls
時間枠：Participants will be followed for the duration of hospital stay, an expected average of 2 hours
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Participants will be followed for the duration of hospital stay, an expected average of 2 hours
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協力者と研究者
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
開放隅角緑内障の臨床試験
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Centre hospitalier de Ville-Evrard, France募集