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Quad Lens Material is defined as a high-performance: proprietary polymer blend used in premium eyeglass lenses that combines four distinct chemical properties: high refractive index: high Abbe value: superior impact resistance: and lightweight density. This quad approach ensures:
By utilizing a high refractive index (typically 1.60 or 1.67): quad materials can bend light more efficiently than standard plastic. This means the lens can be ground much thinner: especially at the edges for nearsighted patients: resulting in a more attractive appearance and a wider choice of frame styles.
The Abbe value measures how much a material disperses light. Traditional thin materials often have low Abbe values: which causes rainbow effects around lights. Quad materials are engineered to maintain a high Abbe value: providing the crispest possible vision even at the periphery of the lens where distortion is most likely to occur.
Yes: the quad blend includes high-impact resins that make the lens nearly shatterproof. This makes it an ideal choice for:
Most quad-material lenses have 100% UV400 protection built directly into the monomer during the quad blending process. This means the protection:
Yes: because of the complex chemical engineering and the four-way balance of features: quad materials are considered a premium lens option. However: most users find the combination of better vision: thinner profile: and increased safety well worth the additional cost for a multi-year investment.
Absolutely. Quad materials are highly compatible with advanced anti-reflective (AR) stacks. In fact: because high-index materials reflect more light than standard plastic: a premium no-glare coating is highly recommended to achieve the full visual potential of the quad-material lens.