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Background <p>To report the anatomical and functional outcomes of intravitreal faricimab injection in cases of macular telangiectasia type 1 and Coats’ disease that were refractory to previous treatments.</p> Methods <p>We describe four cases of macular telangiectasia type 1 and Coats’ disease with macular edema, which were treated with intravitreal faricimab injection.</p> Results <p>Four patients with persistent cystoid macular edema despite prior treatment received intravitreal faricimab injections, and two of them showed anatomical and visual improvement. In case 1, a patient with Coats’ disease achieved improved telangiectatic vessel at macula and visual recovery following eight monthly injections of faricimab, with central macular thickness (CMT) reduced from 645&#xa0;μm to 217&#xa0;μm and BCVA improved from 20/30 to 20/25. In case 2, a patient with diabetic retinopathy and suspected macular telangiectasia type 1 showed improvement in CMT (670&#xa0;μm to 219&#xa0;μm) and visual acuity (20/63 to 20/40) with resolution of telangiectatic vessel with leakage after four faricimab injections. Case 3 and 4 were chronic and long-standing cases; in case 3, a patient with Coats’ disease demonstrated partial response with reduced macular edema, while in case 4, with a Coats’ disease, showed no response after two faricimab injections.</p> Conclusions <p>Faricimab may provide therapeutic benefits in cases of macular telangiectasia type 1 and Coats’ diseases unresponsive to previous anti-VEGF agents, potentially due to its dual inhibition of vascular endothelial growth factor-A and angiopoietin-2. However, its efficacy may be limited in patients with chronic phase. Further studies are warranted to assess its role in vascular retinal diseases beyond currently approved indications.</p>

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Therapeutic effect of faricimab in macular telangiectasia type 1 and Coats’ disease: case series

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月8日

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  • Hyun Young Park,
  • Kwangsic Joo,
  • Se Joon Woo

摘要

Background

To report the anatomical and functional outcomes of intravitreal faricimab injection in cases of macular telangiectasia type 1 and Coats’ disease that were refractory to previous treatments.

Methods

We describe four cases of macular telangiectasia type 1 and Coats’ disease with macular edema, which were treated with intravitreal faricimab injection.

Results

Four patients with persistent cystoid macular edema despite prior treatment received intravitreal faricimab injections, and two of them showed anatomical and visual improvement. In case 1, a patient with Coats’ disease achieved improved telangiectatic vessel at macula and visual recovery following eight monthly injections of faricimab, with central macular thickness (CMT) reduced from 645 μm to 217 μm and BCVA improved from 20/30 to 20/25. In case 2, a patient with diabetic retinopathy and suspected macular telangiectasia type 1 showed improvement in CMT (670 μm to 219 μm) and visual acuity (20/63 to 20/40) with resolution of telangiectatic vessel with leakage after four faricimab injections. Case 3 and 4 were chronic and long-standing cases; in case 3, a patient with Coats’ disease demonstrated partial response with reduced macular edema, while in case 4, with a Coats’ disease, showed no response after two faricimab injections.

Conclusions

Faricimab may provide therapeutic benefits in cases of macular telangiectasia type 1 and Coats’ diseases unresponsive to previous anti-VEGF agents, potentially due to its dual inhibition of vascular endothelial growth factor-A and angiopoietin-2. However, its efficacy may be limited in patients with chronic phase. Further studies are warranted to assess its role in vascular retinal diseases beyond currently approved indications.