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A rare, acquired, eye disease characterized by unilateral (rarely bilateral) abnormally dilated and tortuous capillaries around the fovea, associated with multiple arteriolar and venular aneurysms, lipid depositions, and intra-retinal cystoid degeneration. It leads to vision loss due to macular edema with hard exudates.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for idiopathic macular telangiectasia type 1.
5 publications have been identified in PubMed for idiopathic macular telangiectasia type 1. Research spans Case Report / Case Series (60%) and Clinical Trial Publication (40%).
Liu Z (2026). [PMID: 42145750](https://pubmed.ncbi.nlm.nih.gov/42145750/). *Front Med (Lausanne)*. [Case Report / Case Series]
Carnevali A (2025). [PMID: 41420780](https://pubmed.ncbi.nlm.nih.gov/41420780/). *Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie*. [Clinical Trial Publication]
Yu G (2025). [PMID: 41137343](https://pubmed.ncbi.nlm.nih.gov/41137343/). *Medicine*. [Case Report / Case Series]
Low CX (2024). [PMID: 39333939](https://pubmed.ncbi.nlm.nih.gov/39333939/). *BMC ophthalmology*. [Case Report / Case Series]
Amoroso F (2024). [PMID: 38917396](https://pubmed.ncbi.nlm.nih.gov/38917396/). *Ophthalmic surgery, lasers & imaging retina*. [Clinical Trial Publication]
Data assembled from 3 of 12 sources · Last updated Sep 18, 2026, 12:59 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center