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Rotational stability of silicone hydrogel toric contact lenses

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The utilisation of soft toric contact lenses has increased significantly over the past few years. In 2006 the proportion of all soft lens fits that were toric was approximately 15 per cent, whereas, in 2009, this value has now risen to 34 per cent.1,2 This could be due to a variety of new products becoming available and these products meeting the expectations that practitioner's have with regard to soft toric lens performance.

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Silicone hydrogel toric soft contact lenses

In 2002, Bausch & Lomb was the first company to introduce a silicone hydrogel soft toric contact lens, PureVision Toric, made from balafilcon A. This material has demonstrated excellent safety and physiological performance.5 It is approved for daily and flexi wear and up to 30 days of continuous wear. Now, there is a choice of toric contact lenses that are available with high oxygen permeable materials, such as Air Optix for Astigmatism, Biofinity Toric, Acuvue Advance for Astigmatism and Acuvue Oasys for Astigmatism, all of which are approved for daily wear but no more than seven days of continuous wear.

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