Over the past decade the major contact lens manufacturers have made huge advances in research and development leading to new contact lens technologies. These included improvements in production methods that ensure higher levels of quality, reproduction, and a reasonable overall cost to the wearer. A leap from the mid water type polymers to silicone hydrogel materials completely transformed the definitions of fit, oxygen transmission to the eye tissues, wearer comfort and wearers' expectations for end-of-day comfort.
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