Visual field testing is a critical and highly valuable diagnostic tool used to detect and monitor subtle changes in peripheral vision, which are often the earliest and most significant signs of glaucoma as well as ocular toxicity caused by medications such as Plaquenil. At Dr. Schwartz Optometrist & Associates, we utilize the advanced Humphrey Visual Field Analyzer to accurately measure a patient’s full scope of vision and identify any visual field defects that could indicate early optic nerve damage or retinal toxicity. Regular visual field testing plays an essential role in the early detection and ongoing monitoring of glaucoma progression, enabling timely intervention and treatment to prevent further vision loss. Additionally, this testing is vital for patients undergoing treatment with Plaquenil, as it helps detect subtle visual changes well before irreversible damage occurs, ensuring safer and more effective management of their medication and overall eye health.