Related Experiment Video
Updated: Jun 10, 2026
05:14
Characterization of Vascular Morphology of Neovascular Age-Related Macular Degeneration by Indocyanine Green Angiography
Published on: August 11, 2023
Ethnic Differences in the Presentation Patterns of Type 3 Macular Neovascularization
Paolo Forte1,2,3, Vincenzo Fontana4, Sang Min Park5
1Jules-Gonin Eye Hospital, Fondation Asile des Aveugles, Department of Ophthalmology, University of Lausanne, Switzerland.
Retina (Philadelphia, Pa.)
|June 9, 2026
Summary
Asian patients presented with younger onset Type 3 macular neovascularization (T3 MNV) and lesions closer to the foveal center compared to Caucasians. These differences highlight ethnic variations in T3 MNV presentation patterns.
Area of Science:
- Ophthalmology
- Medical Imaging
- Genetics
Background:
- Age-related macular degeneration (AMD) is a leading cause of vision loss.
- Type 3 macular neovascularization (T3 MNV) is a subtype of AMD characterized by neovascularization originating from the retinal pigment epithelium.
- Understanding ethnic variations in T3 MNV presentation is crucial for tailored treatment strategies.
Purpose of the Study:
- To investigate and compare the clinical presentation patterns of T3 MNV in Caucasian and Asian populations.
- To identify demographic and imaging features that differentiate T3 MNV presentation between these ethnic groups.
Main Methods:
- Retrospective, multicenter, comparative case series of treatment-naïve T3 MNV patients.
- Multimodal imaging and topographic mapping of T3 MNV lesions using the ETDRS grid.
- Analysis of demographic and clinical variables, including age, lesion location, and reticular pseudodrusen (RPD) prevalence.
- Discriminant analysis to assess features differentiating Caucasian and Asian populations.
Main Results:
- Asian patients were younger at presentation (76.1 vs. 81.1 years) with T3 MNV lesions closer to the foveal center (810.7 vs. 1061.4 μm).
- Central ETDRS circle involvement was more frequent in Asians (17.5% vs. 4.4%).
- RPD prevalence was higher in Caucasians (89.0% vs. 74.2%). Age and foveal distance were significant discriminators of ethnicity.
Conclusions:
- T3 MNV exhibits both shared and distinct presentation characteristics across Caucasian and Asian populations.
- While common pathophysiological mechanisms may underlie T3 MNV, ethnic-specific factors likely influence its presentation.
- Age and lesion topography are key differentiating features between ethnic groups.
