Role of Refractive Index in Lens Thickness
The thickness of a lens is primarily determined by two factors: your prescription and the material of the lens, specifically its refractive index. While you cannot alter your prescription, you do have control over the lens material. Opting for a higher refractive index results in thinner lenses.
Here is a comparison of the 1.74 lens vs the 1.5 lens at a prescription strength of -5.00.
Comparatively, the 1.5 index lens is noticeably thicker, particularly at the edges.
UV420 Blue Control Technology
We offer the UV420 blue control technology as an option. In addition to UV rays, this technology can effectively block harmful light in the 400–420 nm part of the high-energy visible (HEV) light.
Unlike traditional blue control coatings, UV420 blue control technology offers a more natural visual experience.
What is HEV Light?
High-energy visible (HEV) light, also known as blue light, is a type of light with relatively high energy levels. It is emitted by the sun, as well as by electronic devices such as smartphones, computers, and LED lights. HEV light has been associated with potential eye strain, disruption of sleep patterns, and other health concerns.