ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2022
Effects of long-term high-altitude exposure on retinal and choroidal microcirculation.
Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Choroidal vascularity index is independent of ocular and image-based factors in healthy eyes: a systematic review and meta-analysis.Scientific reports · 2025Pooled it
- Layer-specific choroidal vascular adaptation to high-altitude hypoxia revealed by functional OCT at 3,800 m.Function (Oxford, England) · 2026Article
- Time-Resolved Oxidative Stress and Apoptosis in Murine Retina under Acute Hypobaric Hypoxia with Parallel Activation of the LIF-JAK-STAT3 Axis.Molecular neurobiology · 2026Article
- Association between glycated hemoglobin A1c and diabetic retinopathy in adults with type 2 diabetes mellitus residing at high altitudes.Frontiers in endocrinology · 2026Article
- Role of Flight Duration and Altitude in Ocular Health of Military Pilots.Medical science monitor : international medical journal of experimental and clinical research · 2025Article
- Retinal Vascularity in Military Pilots in Relation to the Type of Aircraft, Flight Altitude and Total Hours of Flight.Journal of clinical medicine · 2025Article
- Quantitative evaluation of retinal vascular parameters among highland and lowland native children using artificial intelligence.Frontiers in cell and developmental biology · 2025Article
- Quantifying ocular microcirculation in hypertension patients with carotid artery stenosis.Frontiers in neuroscience · 2024Article
- Quantify retinal structure in high-altitude residents with and without high altitude polycythemia.BMC ophthalmology · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
purposeTo quantify the effect of long-term high-altitude (HA) exposure on retinal and choroidal microcirculation and to relate these changes to high-altitude polycythemia (HAPC), as a proxy for etiopathogenesis of high-altitude related retinopathy (HAR).
methodsFifty-one HAPC patients, 50 healthy HA residents, and 43 low altitude (LA) residents were recruited in this study. Optical coherence tomography angiography (OCTA) and enhanced depth imaging (EDI)-OCT images were analyzed. Retinal microvascular metrics included vessel density (VD), skeleton density (SD), fractal dimension (FD), and foveal avascular zone (FAZ). Choroidal microvascular metrics included subfoveal choroidal thickness (SFCT) and choroidal vascularity index (CVI). All metrics were calculated by ImageJ software and compared among HAPC group, healthy HA group, and LA group.
resultsIn HAPC group, VD (30.62 ± 3.67%), SD (13.25 ± 1.64%), FD (1.79 ± 0.04), and the CVI (63.01 ± 1.42%) were significant lower and SFCT (403.25 ± 94.3 μm) was significant thicker than healthy HA group (all P < 0.001). FAZ area was comparable between two groups (0.42 ± 0.1 vs. 0.4 ± 0.11 mm
conclusionsLong-term exposure to HA environment induces retinal and choroidal microcirculation disturbance in HAPC patients. However, these changes were not evident in healthy HA residents because of adaptation.
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Registered trials
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