NCT07409740

Optical Coherence Tomography Angiography Evaluation Of Patients Taking Hydroxychloroquine

• Status: Not Yet Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 90 (estimated)
• Sponsor: Sohag University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This study aims to evaluate retinal and choroidal microvascular changes using optical coherence tomography angiography (OCTA) in patients receiving hydroxychloroquine therapy. Hydroxychloroquine is commonly used in the treatment of autoimmune diseases and may cause retinal toxicity with long-term use. OCTA is a non-invasive imaging modality that allows detailed assessment of retinal vascular changes.

Detailed description

Hydroxychloroquine is widely prescribed for the management of autoimmune and rheumatologic diseases. Long-term use of hydroxychloroquine has been associated with retinal toxicity, which may lead to irreversible visual impairment if not detected early. Conventional screening methods include fundus examination, automated visual field testing, and spectral-domain optical coherence tomography. Optical coherence tomography angiography (OCTA) is a non-invasive imaging technique that enables quantitative and qualitative assessment of retinal and choroidal microvasculature. This study is designed to evaluate OCTA parameters in patients receiving hydroxychloroquine therapy. Patients undergoing hydroxychloroquine treatment will be evaluated using OCTA imaging. Retinal vascular parameters will be analyzed and correlated with clinical variables such as duration of treatment and cumulative hydroxychloroquine dose. The findings of this study may contribute to improved understanding of early microvascular changes associated with hydroxychloroquine exposure and the potential role of OCTA in retinal toxicity screening.

Conditions

• Hydroxychloroquine Retinopathy

Timeline

• Start date: 2026-02-01
• Primary completion: 2026-08-01
• Completion: 2026-09-01
• First posted: 2026-02-13
• Last updated: 2026-02-13