ArticleTherapeutic advances in drug safety2024
Evaluation of early retinal changes in patients on long-term hydroxychloroquine using optical coherence tomography angiography.
Article in Therapeutic advances in drug safety, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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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.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- Optical Coherence Tomography and Angiography in Hydroxychloroquine Retinopathy: A Narrative Review.Diagnostics (Basel, Switzerland) · 2026Review
- Optical coherence tomography angiography parameters in patients on hydroxychloroquine therapy.International ophthalmology · 2026Article
- Retinal microvasculature and macular-choroidal thickness in oral contraceptive users: an OCTA and OCT comparative study.International journal of retina and vitreous · 2025Article
- Ophthalmic Posterior Segment OCTA Metrics as Potential Biomarkers for Systemic Involvement in Systemic Sclerosis, Systemic Lupus Erythematosus, and Behçet Disease: A Systematic Review.Open access rheumatology : research and reviews · 2025Review
- Refining lupus management: a comprehensive review of HCQ blood levels.Rheumatology advances in practice · 2025Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Connective tissue diseases (CTD), including systemic lupus erythematosus and rheumatoid arthritis (RA), have long been treated with hydroxychloroquine (HCQ). However, prolonged HCQ use poses a risk of adverse effects, particularly retinopathy. Objective: To detect early retinal changes assessed by optical coherence tomography angiography (OCTA) in CTD patients with long-term HCQ treatment and to explore the relationship between OCTA parameters and the concentrations of HCQ and its metabolites. Design: A cross-sectional study conducted from March 2020 to October 2021 at the First Affiliated Hospital of Anhui Medical University. Methods: The area and perimeter of the foveal avascular zone (FAZ), the thickness of the fovea and parafovea, and the vascular density of the superficial capillary plexus (SCP) and deep capillary plexus (DCP) in each area of the macula were measured by OCTA in 43 CTD patients treated with HCQ for over 6 months. Meantime, blood concentrations of HCQ and its metabolites were determined by high-performance liquid chromatography-tandem mass spectrometry, and the clinical documents of all 43 involved patients were collected. Results: There is no significant correlation between OCTA outcomes and the patient's age, disease duration, and weight-dependent dose. HCQ cumulative duration positively correlated with FAZ area and perimeter ( Conclusion: OCTA could be used to detect microvascular changes in the macula of CTD patients with long-term HCQ therapy. It was not found the concentrations of HCQ and its metabolites were associated with retinal vascular changes.
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Registered trials
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