How Telsia Works: The Science of Visual Comfort

Digital screens present a unique challenge to the human visual system. Unlike paper, screens emit light directly and often feature high-contrast, repetitive patterns (like black text on a bright white background) that can overstimulate the brain. For many individuals, this leads to Visual Stress, a condition where the visual cortex becomes "hyperexcited," resulting in eye strain, headaches, and distorted text.

We can already observe how certain coloured overlays help alleviate these symptoms in traditional reading materials. Telsia extends this concept to digital displays by applying a customizable colour filter that reduces the specific wavelengths of light responsible for triggering visual stress.

How Telsia Supports Dyslexic Readers

While dyslexia is primarily a language-processing difference, research suggests a significant number of dyslexic individuals also experience symptoms of Visual Stress. For these readers, the "mechanical" act of looking at a screen consumes so much cognitive energy that little is left for comprehension.

Telsia bridges this gap by addressing three key areas:

• Reducing "Visual Noise": For many, high-contrast black text on white backgrounds appears to vibrate, blur, or swirl. By softening the contrast through customizable colour filters, Telsia "anchors" the words, making the text appear more stable and clear.
• Alleviating Pattern Glare: The repetitive lines of text on a screen can create a striped effect that overstimulates the visual cortex. Telsia’s filters dampen this effect, reducing the physical discomfort and "brain fog" often associated with long-form digital reading.
• Increasing Fluency and Stamina: When the eyes aren't fighting against harsh light and moving text, reading becomes less exhausting. This allows dyslexic users to read for longer periods with improved focus and better retention of the material.

Telsia is designed around the Cortical Hyperexcitability Theory. Research suggests that certain individuals possess a visual system that is hypersensitive to specific wavelengths of light. When these wavelengths are present, the neurons in the visual cortex fire excessively, creating "neural noise" that makes focusing difficult.

By applying a digital colour filter (a coloured overlay), Telsia modifies the light reaching your eyes. This "quiets" the overactive neurons, reducing the visual discomfort often associated with reading on digital displays.

Reducing Neural Noise: Precision tints measurably reduce cortical activation in response to stressful visual stimuli.

Source: Wilkins, A. J. (2025). Vision Research.

Reading Endurance: Reducing visual stress allows for longer reading periods with fewer symptoms like "letter jumping".

Source: Suttle & Conway. (2025). Clin. Exp. Optometry.

Screen Fatigue: Adjusting luminance and hue significantly decreases the "visual attack" of high-contrast digital text.

Source: Laycox, et al. (2024). Perception.