The selection of a Single Vision Lens (SVL) material is the critical factor determining a pair of glasses' optical performance, wearing comfort, and durability. Professional lens m...
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Flat-top lens were used to correct two different eye prescriptions. Bifocals were easy to spot – they had a line dividing the lens in two, with the upper half for distance vision, and the lower half for reading. The semi-finished lens are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or “curing” of the lens, while the UV absorber increases the UV absorption of the lens and prevents yellowing.
The selection of a Single Vision Lens (SVL) material is the critical factor determining a pair of glasses' optical performance, wearing comfort, and durability. Professional lens m...
READ MOREThe core distinction between Single Vision Lenses (SVL) and Multifocal Lenses, specifically Progressive Lenses, lies in their fundamental optical design philosophy and how they add...
READ MOREIntroduction In today’s digital world, we’re constantly exposed to screens—whether it’s our smartphones, computers, or televisions. While technology has undoubtedly enhanced our li...
READ MOREIntroduction of Blue Light What exactly is blue light and why should we care about it? Blue light belongs to the high-energy visible (HEV) portion of the light spectrum and is emit...
READ MOREIntroduction to Single Vision Lenses What are Single Vision Lenses? Single vision lenses are a type of prescription lenses designed to correct one type of vision problem in a singl...
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