Z1 blue-tinted lenses are designed to filter out specific

wavelengths of light that are most likely to trigger seizures

in people with photosensitive epilepsy. Research suggests

that blue-light filtering lenses can reduce the likelihood

of seizures by stabilizing neural responses in the brain and

preventing excessive stimulation from harmful light

frequencies.​​​​​​

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How the Z1 Blue Tint Works to Reduce Symptoms

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• Selective Light Filtering: The blue tint in Z1 lenses blocks short-wavelength blue light (580-640nm), which has been linked to increased neuronal excitability in the visual cortex. By reducing exposure to these wavelengths, the lenses help minimize the risk of overstimulation that can trigger seizures.

• Modulation of Cortical Excitability: Studies suggest that blue light influences brain activity by increasing cortical excitability. Z1 lenses help regulate this by preventing excessive activation of neurons, thereby reducing seizure susceptibility (Wilkins et al., 1999).

• Reduction of Flicker Sensitivity: Many modern screens and artificial lights flicker at high frequencies, which can be a major trigger for those with PSE. Blue-tinted lenses reduce the perception of flickering stimuli, making it less likely to provoke a seizure.

• Improved Melatonin Regulation: Blue light exposure, especially from screens, can disrupt melatonin production, which plays a role in sleep and neurological function. By reducing blue light exposure, Z1 lenses may help maintain a more stable sleep-wake cycle, which is crucial for managing epilepsy.

• Minimized Contrast Sensitivity Issues: High-contrast patterns, such as black-and-white stripes, can provoke seizures. Blue lenses help by altering contrast perception, making these patterns less visually stimulating and thereby reducing the risk of a seizure response.

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Benefits of Z1 Blue-Tinted Lenses:

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• Reduction in Seizure Triggers: Studies have shown that blue light can influence cortical excitability, and filtering specific wavelengths may help prevent seizures (Harding & Jeavons, 1994).

• Improved Visual Comfort: These lenses can reduce eye strain and discomfort caused by bright and flickering lights, making daily activities more manageable.

• Screen Time Protection: Digital screens emit high-energy visible (HEV) blue light, which can contribute to photosensitivity. Z1 lenses help filter this light, making screen use safer.

• Enhanced Contrast Perception: Some users report better visual clarity and contrast, which can improve overall quality of life.

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