Is contact lens material hydrogel silicon hydrogel? Is this material very good?

There are not many contact lenses made of silicone hydrogel in the domestic market, but this material is very common abroad. Contact lenses are generally divided into ordinary hydrogel materials and silicon hydrogel materials. In contrast, the oxygen permeability and moisturizing effect of lenses made of silicon hydrogel materials is five times higher than that of ordinary lenses. So in hot summer, it is better to choose a pair of glasses made of this material.

Okay, hey. Com did some statistics. At present, the three major brands on the market are Johnson & Johnson, Vision, Cooper and Bausch & Lomb. First of all, as the patent owner of silicone hydrogel materials, Shikang brand has certain advantages. Among them, Shikang day and night contact lens is the contact lens product with the highest oxygen permeability at present, and it is also the only contact lens product that can really wear and sleep.

, followed by high-quality Cooper contact lens series, blockbuster and Aviana, with oxygen permeability coefficients of 125 and 160 respectively, followed closely. There are Bosch & Lomb's pure moon throwing, Johnson & Johnson's refreshing eyes throwing for two weeks. The former is more common in the market and has higher cost performance.

If the eyes are dry or need to wear contact lenses for a long time, the oxygen permeability of contact lenses is very important, so that the eyes will be moisturized for a long time, so the material of silica gel hydrogel is a better choice.