Which lighting characteristic is most important to reduce glare and support accurate assessment in the treatment area?

• A. Adequate brightness around 300-500 lux
• B. Uniform illumination
• C. High color rendering index (CRI) with indirect lighting
• D. Use of direct, intense lighting to highlight tissue

Answer: (C)

Focusing on lighting that supports accurate assessment means prioritizing color fidelity and glare control. A high color rendering index ensures colors in tissues, wounds, and skin appear true to life, so subtle changes in color or perfusion aren’t masked or misread. Indirect lighting helps minimize glare and harsh reflections from moist or shiny surfaces, making details easier to inspect without distracting hotspots. Together, these two aspects—color accuracy and glare reduction—give clinicians a more reliable view of tissue condition and healing progress. While adequate brightness and uniform illumination are important for general visibility and reducing shadows, they don’t alone guarantee true color perception or glare control as effectively as high CRI with indirect lighting. Direct, intense lighting tends to create glare and highlight reflections, which impair assessment.