presbyopia lenses 中文意思是什麼
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Firstly, various kinds of presbyopia lenses is reviewed and compared. the basic feature and principle of the pal are introduced and the difference between the characteristics of hard design and soft design is described as well
首先，概述和比較不同的老視矯正鏡片，介紹漸變鏡片的基本結構特徵和矯正原理，比較分析軟設計和硬設計之間的區別。 -
Progressive addition lenses ( pal ) is a new kind of effective solution to presbyopia, it has many advantages over other lenses dealing with presbyopia. investigation of its design and evaluation method is shown in this dissertation
漸變鏡片（英文progressiveadditionlenses簡稱pal ）是針對老視癥狀的一種有效的解決手段，與各類傳統老視鏡片相比較具有許多優點，本文對這種鏡片的設計和評價進行研究。
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