Borish I M, Hitzeman S A
J Am Optom Assoc. 1983 May;54(5):415-22.
An evaluation of the relative influence of the optical features of two forms of invisible addition lenses, one of progressive power form and one in blended bifocal form, is made upon a number of subjects. One group consisted of previous progressive lens wearers and served not only the above purpose but also as an analysis of patient preference after the initial novelty had worn off. The second group consisted of subjects unacquainted with either type presented in a double-masked procedure. Progressive forms of invisible lenses were overwhelmingly preferred over blended forms in both groups. The first group also showed a preponderant inclination for retention of progressive lenses after some span of wear even among subjects previously accustomed to the usual visible bifocal forms.
对两种形式的隐形附加镜片（一种是渐进多焦点形式，另一种是融合双焦点形式）的光学特性的相对影响，在一些受试者身上进行了评估。一组由以前佩戴渐进多焦点镜片的人组成，这组人不仅服务于上述目的，而且还用于分析在最初的新鲜感消失后患者的偏好。第二组由不熟悉所呈现的任何一种类型镜片的受试者组成，采用双盲程序。在两组中，渐进多焦点形式的隐形镜片都比融合形式的更受青睐。第一组还表明，即使在以前习惯使用普通可视双焦点镜片的受试者中，在佩戴一段时间后，大多数人也倾向于继续使用渐进多焦点镜片。
