sharp-focus lens

Objective To evaluate the effect of sharp-edged intraocular lens ( IOL ) on posterior capsule opacification ( PCO ).

目的探讨直角边缘人工晶状体 ( intraocularlens,IOL ) 预防后囊膜混浊 ( posteri-orcapsuleopacification,pco ) 的作用.

Soft dot: Half-tone dot with soft halation or fringe around it, as oppsed to a hard dot which is very sharp and without fringe. The mist has defined edges in several areas, which eliminates the possibility of a lens flare or light refraction.

软点：有着淡色晕光或边缘的半色调点子。有别于十分清晰，并无淡边的硬点。薄雾的几个地方都有清晰的边缘，因此不可能是由于反光或者镜头眩光造成的。