**As a common vision correction tool, the choice of materials for glasses plays a crucial role in the comfort, safety and correction effect of glasses. Among them, 4VA (CAS: 637-69-4) is a high-quality ophthalmic material, also known as: 4-methoxystyrene 4-methoxystyrene, molecular formula: C9H10O, this article will introduce the characteristics, applications and precautions of 4VA material in detail.
1. Characteristics of 4VA (CAS: 637-69-4) material.
1.Silicone hydrogel** spectacle lenses with 4VA (CAS: 637-69-4) provide excellent oxygen permeability, which can meet the oxygen demand of the cornea, and effectively reduce the risk of corneal hypoxia caused by wearing ** glasses.
2.Add 4VA (CAS: 637-69-4) material silicone hydrogel** spectacle lens has a smooth surface, which is not easy to adsorb the sediment in tears and reduce eye discomfort.
3.Adding 4VA (CAS: 637-69-4) material silicon hydrogel** spectacle lenses, it has good mechanical properties, is easy to make lenses of various specifications, is not easy to deform and damage, and improves wearing comfort.
Second, the application of 4VA materials.
4VA (CAS: 637-69-4) material is often used to prepare intraocular lenses, OK lenses, silicon hydrogel glasses, etc., as an excellent silicon hydrogel glasses material, with high oxygen permeability, anti-precipitation, good tolerance, stable elastic strength, no expansion, no allergies, etc., it is still the preferred material for ophthalmic lenses, because of its advanced processing technology, easy implantation and reasonable, it is accepted by the majority of ophthalmic manufacturers, and is the most widely used in clinical practice.
HUANOSEN offers a wide range of high-purity optical-grade materials and biomaterials for silicone hydrogel** eyewear with more than 18 years of experience. As a professional silicone hydrogel glasses material 4VA (CAS: 637-69-4) supplier, after dozens of international enterprise experts review and promotion, and international large companies for many times of verification and audit, has formed a scientific and complete quality control system, the establishment of international industry norms of product quality standards, dozens of international companies have identified Huanosen as its designated global business.