Relationship between presbyopic add and age in successful progressive addition lens wear in myopes 老视渐变镜的近视眼配戴者年龄和近附加的关系
Progressive addition lens and control of myopia Mirror, Mirror, on the Wall 渐进镜与近视的控制
The basic feature and principle of progressive addition lens ( PAL ) are introduced. Its soft design method based on Dirichlet principle was given. 介绍了渐变镜片的基本结构及工作原理,给出其基于狄利克雷条件的软设计方法。