Abstract
Background: Hydroxychloroquine (HCQ) is an antimalarial drug often employed in the treatment of various diseases, as a basic treatment for a prolonged period of time. Materials and Methods: Screening tests were analyzed in descending order of early detection of changes in HCQ toxicity. Results: The first ocular changes as a result of the toxicity of HCQ are those found during the visual field test, and the typical image of the fundus that highlights the bull’s-eye lesion signifies advanced, irreversible HCQ toxicity. Conclusion: Ophthalmologic screening is of great importance in daily practice. Physicians from different medical specialties should be aware of the side effects of HCQ and refer the patients to ophthalmology for screening and close follow-up. Key words: Hydroxychloroquine; Retinal toxicity; Screening
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