Analysis of the Effect of Intravitreal Dexamethasone Injection on Diabetic Macular Edema After Cataract Surgery (IDDMECS) (IDDMECS)
Macular Edema (Swelling of a particular site of the retina) can become a significant problem for Diabetics undergoing Cataract surgery. And a significant number of people who undergo Cataract surgery each year are diabetics. And when you multiply these two factors together you are left with a significant number of people who do not gain as much vision as their peers. Diabetics who develop Macular Edema actually can loose some vision after surgery and when you follow them up, they don't gain as much vision. This Study aims to prevent such an event from happening and therefore allow Diabetics to gain as much vision as they can from cataract surgery. This study will use Dexamethasone injected intravitreally (into the gel of the eye) at the end of cataract extraction to control Macular edema brought about by surgery. The main outcome is the central retina thickness and retinal volume as measured by Optical Coherence Tomography. Secondary outcomes are BCVA and incidence of Laser Treatment.
Other Drugs, life Bevacizumab and Pegaptanib, have been used for this purpose but they are expensive and have potential systemic side-effects due to anti-VEGF (vascular endothelial growth factor) actions. Dexamethasone has been used in the eye for decades and is short-lived, minimizing possible systemic effects. Moreover, this drug is at least 15x cheaper than the previously mentioned ones and therefore has tremendous benefit for developing countries. We seek an alternative drug that can reduce or prevent Macular edema at a less expensive and safer way.
調査の概要
研究の種類
入学 (予想される)
段階
- フェーズ2
連絡先と場所
研究場所
-
-
Ontario
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Toronto、Ontario、カナダ、M5T 2S8
- Toronto Western Hospital
-
-
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
説明
Inclusion Criteria:
- Diabetic patients for Cataract Surgery with vision of ≤ 20/50 and > grade 3 any cataract type using the Lens Opacities Classification System III. Diabetics included must have at least one microaneurysm in the posterior pole (defined by the Superior and Inferior Arcade).
Exclusion Criteria:
- Without any diabetic retinopathy and those with active uncontrolled proliferative disease
- Retinal disease,other than Diabetes, that can affect macular edema
- Uveitis, a history of any other intraocular surgery or a history of uncontrolled glaucoma
- Eyes with cataract precluding proper OCT measurement pre-operatively
- Patients who will experience longer than usual operating time, complicated surgery, rupture of the posterior capsule, and iris or corneal burns
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
- 主な目的:防止
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
---|---|
介入なし:Control
Diabetics undergoing routine cataract surgery
|
|
実験的:Treatment
Diabetics undergoing cataract surgery with injection of 0.5mg in 0.05cc of dexamethasone at the end of surgery
|
0.5mg in 0.05cc of Dexamethasone from a 10mg/ml vial
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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 |
---|---|
Central Retinal Thickness
時間枠:within 3 months after cataract surgery
|
within 3 months after cataract surgery
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二次結果の測定
結果測定 |
時間枠 |
---|---|
Best corrected visual acuity and incidence of laser treatments
時間枠:within 3 months after cataract surgery
|
within 3 months after cataract surgery
|
協力者と研究者
捜査官
- 主任研究者:Michael H Brent, MD, FRCSC、University Health Network, Toronto
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。
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