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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Lens surfaced according to prescriptions in the lens laboratory is called Rx lens. In theory, it can be accurate to 1°. At present, most of Rx lens is ordered by a gradient power degree of 25. Of course, parameters such as pupil distance, asphericity, astigmatism and axial position are customized to achieve the best results (not just a more uniform thickness). Reading glasses lens, because of more tolerance of pupil distance, the gradient power degree is 50, but there is also 25.
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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