23-Sep-2011

Vision for correct water treatment

Abstract

Chemically pure water is vital in the manufacture and packaging of contact lenses. Elga Process Water's Orion purification plant uses a combination of technologies to produce high purity water to meet USP water quality and FDA regulations, notably reverse osmosis, which removes not only dissolved ionic impurities but also organics, particles and bacteria

The Orion uses few chemicals making it safe and environmentally friendly

Pure water is a vital ingredient, packaging component and process aid in the manufacture of contact lenses. To meet new demand, lens producer CooperVision has added a fourth Orion Purified Water system. Rod Musson at ELGA Process Water explains how it works.

Contact lenses have come a long way since German ophthalmologist Adolf Fick inserted a glass scleral lens into his eye back in 1888. Glass gave way to Perspex and then, just a century after Fick’s pioneering work, the development of oxygen permeable hydrogels meant that contact lenses could be more comfortable and worn for longer periods. Also they could be disposable. Today, there is a huge range of lens materials that can correct most eye conditions, including toric lenses for astigmatism and varifocals for presbyopia.

CooperVision is one of the world’s largest contact lens manufacturers, and a leading producer of toric lenses. Its manufacturing facility in Hamble-le-Rice near Southampton, UK, produces some of the most technically advanced lenses on the market including naturally wettable silicone hydrogel lenses featuring its Aquaform technology.

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