Hoya Blue Control – Lens Coatings That Block Harmful Light From LED & LCD Devices LCD and LED computer and television screens, smartphones, tablets and GPS devices all emit blue light. Although blue light in itself is a natural phenomenon – it is present in daylight and help us to stay awake – over exposure can cause eye strain, eye fatigue and even sleeplessness. Hoya BlueControl help neutralises the blue light emitted by LCD and LED screens preventing eye fatigue and eye strain and even sleeplessness. It keeps the eyes in better condition, offering more comfortable and relaxed vision and a better contrast perception when using everyday digital devices.

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