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我们先来讲讲什么是含水量，含水量是隐形眼睛的客观属性描述，顾名思义，也就是镜片中水分的比例，含水量越高，只是说明该隐形眼睛正常情况下需要的水分比较多。
理论上讲，同样材质的前提下，含水量越高，透氧性能越好，镜片也越柔软，戴着就越舒适。但是当含水量高于50%会导致镜片易破损和变形，易附着蛋白质等沉淀物，对散光矫正能力较差等不利的因素.
而含水量较低的的隐形眼镜，由于含水量低有着延长镜片使用寿命，减少附着沉淀物，矫正轻微散光等好处，可以用来做半年抛，年抛型的隐形眼镜，热买的GEO系列、DUEBA系列、NEO新之目系列等。
配戴隐形眼镜的时间较长时，镜片本身的水分会因为蒸发而流失，而隐形眼镜本身并不产生水，是一种海绵状的高分子结构在吸收眼球里的水，这个时候镜片会吸取泪液保持原来的含水量，
因此，长时间配戴隐形眼镜时，含水量越高就越容易导致眼干，因为镜片含水量低于它本身应具有的数值时，就不需要吸取更多的泪液。
综上所述我们可以得出结论：隐形眼镜含水量只是一个隐形眼镜属性数据，含水量只是一个数据，并不是越高越好，大家还是要根据自己个人情况选择相应的产品。
专家建议长时间面对电脑的人最好不要戴隐形眼镜，长时间的注视电脑屏幕会降低眨眼频率，也会导致眼睛干涩。
年抛型的隐形眼镜含水量在38%到42%之间的，含水量适中，适合绝大多数的人群及气候下使用，彩色隐形眼镜也基本都在这个范围之内。
隐形眼镜初戴者由于操作还比较生疏，建议购买成型性好的产品，含水量低的隐形眼镜成形性更好，通常更容易配戴，较适合初次配戴者。
尤其要强调的是，长时间待在空调房的白领一族，由于室内空气湿度很低，更忌讳戴高含水的产品似乎问题显而易见是肯定的，甚至有些零售商以某款隐形眼镜含水量高为卖点抬高售价，误导广大消费者。
隐形眼镜验光戴镜方面的专家为广大消费者揭示，其实隐形眼镜并不是含水量越高越好！
Proffessionals in the contanct lens field, warns consumers “DO NOT TRUST IN WATER CONTENTS, THAT'S JUST A WAY TO RIP YOUR MONEY OFF YOU”
Many contact lens with a high water content is sold at a more expensive price, actually that's just a way to make consumers spend more.
The truth is, less water content is better!!!
Our eyes under normal condition requires a lot of water, from theory a lens with higher water content is more soft and flexible. But if the water content is above 50%, the lens is more susceptable to changing shape and damage.
Contact lens with low water content can last longer, because it has less residue and can adapt easily to light. These lenses are typical of GEO, DEUBA, NEO brands.
If you’ve been wearing contact lenses for a long period, water content within the lens is easily to flow away, however lens on itself does not produce water instead is absorbs the water content from your eyes.
Therefore longer period wearing contact lenses will result your eyes getting dry, but those lens with low water content does not require much water absorption.
Scientists suggests those who use computer for long periods best not to wear contacts, because long lengths of staring into computer screen causes eyes dry, and as a result wearing contact lenses will make you feel uncomfortable and unease.
Contact lenses with water content between 38%-42% is most popular, and is more adjustable to differnet seasons and weather.
Those new to wearing contact lenses, is best to choose a good brand, such as GEO, Deuba and mimo. Also best to select lenses with a lower water content as it’s easier for your eyes to adjust.
Further more, those who sit in the office for long hours, because of the dry air conditioning environment, some believe it’s best to purchase lenses with high water contents. But that's just a wrong myths!!!
To conclude, water content within contact lenses is just statistics. It’s a myth that higher water content lenses are better. It is best that you choose the suitable brand for your own eyes.
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