BenQ ScreenBar Halo Review 2026: An Optometrist's Guide to Monitor Light Bars for Eye Strain

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Introduction: Lighting Matters More Than You Think

As an optometrist, I spend a significant portion of my clinical time discussing the ergonomic factors that contribute to digital eye strain, also known as computer vision syndrome (CVS). Among the most impactful yet often overlooked elements is ambient lighting around your workspace. Inadequate, harsh, or misaligned lighting creates a high-contrast environment that forces your eyes to work harder to process visual information, leading to fatigue, dryness, and discomfort.