Welcome to pharnorcia website.

Pharnorcia Inc.

pharnorcia NEWS

Raw materials for Silicone Hydrogel Contact lenses and
Monomers for foldable intraocular lenses (IOL)

PDMS-MA-CAS#146632-07-7,1-Amino-2-methylindoline HCL-CAS#102789-79-7

TIME:2022-10-28 14:17:51

According to multiple questionnaires, the demand for contact lenses is increasingly strong due to the dual influence of the "mask economy" and the "face value economy". The annual "Double Eleven" is here again. For "old users" of silicone hydrogel contact lenses, this is a rare good time to stock up; and for "new users" who want to try silicone hydrogels Contact lenses are also well worth trying at this time.

Double Eleven New Choice for Stocking, Pharnorcia Silicone Hydrogel Contact Lenses

Here we recommend pharnorcia silicone hydrogel contact lenses, which can make your eyes feel free to wear and breathe freely.

Advantage 1: High oxygen permeability

We all know that contact lenses are a barrier in the process of oxygen transmission to the cornea. The oxygen permeability rate is an indicator to measure this barrier. The larger the value, the more oxygen permeable it is. It is the product of the diffusion coefficient and the solubility coefficient of oxygen through a contact lens, so the oxygen transmission rate is determined by the "material" of the lens, and has nothing to do with the geometry or curvature of the lens.

The oxygen permeability of contact lenses of traditional materials (hydrogel, HEMA) is only about 10, while the Dk/t value of silicone hydrogel (SiHy) materials is 100-160, and the oxygen permeability can be improved compared with hydrogel materials. 10 times or more. Hydrogel contact lenses transmit oxygen through water. The higher the water content, the higher the oxygen permeability. However, the increase of water content will affect the formability of the lens. In addition, the lens with too high water content will easily absorb water from the eyes. portion, so this has always limited the improvement of the oxygen permeability of contact lenses.

But pharnorcia's new silicone hydrogel material breaks this limitation. The special mesh material structure in the silicone hydrogel forms dual channels of "silicon" and "water", allowing oxygen to reach the cornea directly, truly allowing the eyes to breathe freely.

Advantage 2: Appropriate water content

The moisture content of a contact lens refers to the percentage of moisture in the total weight after the material of the contact lens is saturated with water, but it does not mean that the higher the moisture content of the contact lens, the better. For traditional hydrogel lenses, in order to ensure the oxygen permeability of the lens, it relies on water to transmit oxygen to the eyes. At first, it will be comfortable and moisturizing, but as the wearing time increases, the water will evaporate, and the lens lacks sufficient moisture support, and it will be removed from the lens. Water is drawn from the tears to replenish, and the eyes will feel dry.

Pharnorcia's new silicone hydrogel contact lenses also break this myth, combining high oxygen permeability with appropriate water in an excellent ratio to keep tears stable and oxygen circulate continuously, so as to achieve a comfortable feeling of hydration, even if you take a nap, Still long-lasting moisturizing, free breathing.

Recommended raw materials


1-Amino-2-methylindoline HCL-CAS#102789-79-7

Previous : CAS#:3530-36-7,CAS#:3683-12-3,Pharnorcia-specialized supplier of raw materials for silicone hydrogel contact lenses and monomers for foldable intraocular lenses (IOL).

Next : Why do international contact lens companies use Pharnorcia's SIGMA CAS#: 69861-02-5 general-purpose material for silicone hydrogel contact lenses for a long time?

Copyright © 2016 Pharnorcia Inc.



【Scan code】

WeChat identification QR code