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Updated: Oct 14, 2025

Author Spotlight: Overcoming Anti-VEGF Resistance Through Advanced Vascular Morphology Assessment in Choroidal Neovascularization
Published on: August 11, 2023
[Antiangiogenic therapy for types I and II macular neovascularization in age-related macular degeneration]
M V Budzinskaya1, A V Shelankova1, A A Andreeva1
1Research Institute of Eye Diseases, Moscow, Russia.
Abstract:
The neovascular form of age-related macular degeneration (AMD) is characterized by growth of newly formed vessels, accumulation of fluid and, in most cases, presence of retinal pigment epithelium detachment. Depending on its localization in relation to retinal pigment epithelium (RPE), macular neovascularization (MNV) can be considered type 1 when it is located under the RPE, and type 2 when it is invading the RPE and the neurosensory part of the retina.
Purpose:
To conduct a retrospective analysis of the use of anti-VEGF therapy in AMD patients with types I and II of MNV.
Material And Methods:
The study enrolled 89 AMD patients (89 eyes) with active MNV who have been under observation for 3 years. In the course of treatment all patients underwent standard ophthalmological examination that included visometry, biomicroscopy and ophthalmoscopy with mydriasis, as well as optical coherence tomography.
Results:
Anti-VEGF therapy was found to stabilize best corrected visual acuity (BCVA) in both types of MNV (I and II). Comparison of the intraretinal and subretinal fluids (IRF and SRF) revealed that initially neuroepithelium detachment is more frequent (approximately in 90% of eyes) than IRF (30-40%). Antiangiogenic therapy is associated with better resorption of SRF, by the third year of the follow-up the neuroepithelium detachment is visualized in 60% of patients, while IRF remains and is observed in 40% of cases.
Conclusion:
Antiangiogenic therapy has shown good functional and morphological effectiveness in both first and second types of MNV.
Insights
Anti-VEGF therapy effectively stabilizes visual acuity in patients with both types of neovascular age-related macular degeneration (AMD). This treatment promotes the resorption of subretinal fluid, showing significant functional and morphological benefits.
Area of Science:
- Ophthalmology
- Retinal Diseases
- Vascular Biology
Background:
- Neovascular age-related macular degeneration (AMD) involves abnormal blood vessel growth.
- Macular neovascularization (MNV) is classified as type 1 (sub-RPE) or type 2 (intraretinal).
- Fluid accumulation and RPE detachment are key features of neovascular AMD.
Purpose of the Study:
- To retrospectively analyze anti-VEGF therapy outcomes in AMD patients with type I and type II MNV.
- To evaluate the efficacy of anti-VEGF treatment for different MNV classifications.
Main Methods:
- Retrospective analysis of 89 AMD patients with active MNV over 3 years.
- Standard ophthalmological examinations including visometry, biomicroscopy, ophthalmoscopy, and optical coherence tomography.
- Assessment of best corrected visual acuity (BCVA), intraretinal fluid (IRF), and subretinal fluid (SRF).
Main Results:
- Anti-VEGF therapy stabilized BCVA in both type I and type II MNV.
- Subretinal fluid (SRF) resorption was more pronounced than intraretinal fluid (IRF) resolution.
- By year three, 60% of patients showed RPE detachment, while 40% had persistent IRF.
Conclusions:
- Antiangiogenic therapy demonstrates significant functional and morphological effectiveness for both type I and type II MNV.
- Anti-VEGF treatment is a valuable therapeutic option for managing neovascular AMD.
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