The Distinction Between Blue Light-Lens And The Normal Lenses
The core distinction between blue light-filtering lenses and standard lenses lies in their functionality: blue light-filtering lenses filter harmful blue light emitted by electronic devices (within the 415-455nm wavelength range), alleviating eye strain and reducing the risk of retinal damage. Standard lenses, however, serve solely to correct vision and lack blue light protection capabilities. Additionally, differences exist between the two in terms of colour, price, and suitability for various scenarios.
Function and Effects
?Blue-light-filtering lenses?: Employing specialised coatings or substrate absorption technology, these selectively block high-energy short-wave blue light. They reduce discomfort such as dryness and soreness caused by prolonged electronic device use and may improve sleep quality (as blue light suppresses melatonin secretion).??
?Standard Lenses?: Primarily correct myopia, hyperopia, or astigmatism. They offer higher light transmittance and more accurate colour reproduction but do not filter blue light. Prolonged use of electronic devices exceeding four hours may lead to visual fatigue.??
Appearance and Materials
?Colour?: Blue light-filtering lenses typically exhibit a pale yellow or faint blue tint (as blue and yellow light are complementary), whereas standard lenses remain transparent and colourless.??
?Material?: Blue light-filtering lenses incorporate specialised chemical additives or coatings to achieve blue light filtration. Standard lenses are composed solely of resin or glass without additional processing.??
Suitable Scenarios and Pros/Cons
?Blue Light-Blocking Lenses?:
Suitable for: Individuals using electronic devices for over 4 hours daily or those seeking relief from digital eye strain.??
Pros: Reduces eye fatigue and glare; Cons: May slightly affect colour perception (causing a yellowish tint), poses risks during night driving or in glare-prone conditions, and excessive blue light filtering may disrupt circadian rhythm regulation.??
?Standard Lenses?:
Suitable for: Daily reading, outdoor activities, or infrequent electronic device use.??
Advantages: True colour reproduction, lower cost; Disadvantages: Does not alleviate dryness or fatigue caused by screen use.??
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Thanks for reading.
Sophie yang
004@mikeeyewear.com
