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美瞳隐形眼镜弧度参数值多少:你必须知道的隐形眼镜弧度参数

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Posted 2012-4-7 04:56:29 |Show All Posts
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美瞳隐形眼镜弧度参数值多少:你必须知道的隐形眼镜弧度参数



美瞳隐形眼镜导读:《隐形眼镜弧度参数好重要》由Popteen爱好者发表于美瞳眼镜学堂。基弧参数的测量是隐形眼镜配前检查中必不可少的一项,不过,眼镜店基本都会忽略这个步骤,配镜者可以到专业的眼科医院,借助角膜曲率检查角膜前表面的曲率半径,为镜片基弧的选择提供依据。

隐形眼镜弧度参数好重要,为什么这样说,由爱美瞳网为你具体分析。
隐形眼镜基弧(Base Curve)是指镜片弧度的大小,基弧越大,镜片越平坦,基弧越小,镜片就越凹陷。

举个最简单的例子,一个碗和一个盘子相比,盘子的基弧就比碗大。很多隐形眼镜佩戴者在选择隐形眼镜的时候,很少关注到“基弧”这个参数,而基弧不仅关系到佩戴者的舒适度,甚至还会对眼睛的健康造成影响。

没有选对隐形眼镜的基弧,就如同穿了件不合身的衣服,当镜片基弧大于眼球基弧,就可能出现镜片贴不住眼球,容易移位的情况,造成佩戴不舒服,使视力波动;镜片基弧小于眼球基弧,镜片会紧扣住眼球,造成角膜缺氧,并出现新生血管,长期佩戴会对眼睛造成伤害。

因此,基弧参数的测量是隐形眼镜配前检查中必不可少的一项,不过,眼镜店基本都会忽略这个步骤,配镜者可以到专业的眼科医院,借助角膜曲率检查角膜前表面的曲率半径,为镜片基弧的选择提供依据。

很多初次佩戴隐形眼镜的人往往会遇到镜片在眼睛里难以固定,总是随眼球运动滑动抑或隐形眼镜死死扣住眼球,佩戴十分不舒适的情况,这有可能是不合适隐形眼镜基弧在作怪。

现在你知道隐形眼镜弧度参数的重要性了吧?
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