What should be checked before prescribing hydroxychloroquine?

• A. Liver function tests
• B. Kidney function tests
• C. Eye exam
• D. Complete blood count

Answer: (C)

Before prescribing hydroxychloroquine, it is essential to conduct an eye exam due to the potential risk of retinal toxicity associated with the medication. Hydroxychloroquine can cause ocular side effects, including damage to the retina, which can lead to vision changes or loss if not monitored. Baseline eye exams help to establish a reference point for any changes that may occur during treatment. Regular follow-up eye exams are also recommended throughout the course of therapy to detect any early signs of toxicity, allowing for timely intervention if necessary.

While monitoring liver function, kidney function, and complete blood counts are important in the overall management of patients on hydroxychloroquine, the eye exam is uniquely critical due to the specific risk of retinal damage associated with this medication.