Hitzeman S A, Myers C O
J Am Optom Assoc. 1985 Sep;56(9):706-10.
An evaluation of the relative influence of the optical features of two forms of multifocal lenses, one of progressive power form and one of standard flat-top 25 bifocal form, is made upon a number of subjects. A comparison of acceptance was made with special emphasis on testing of intermediate range of vision and breadth of the near field. The progressive form of multifocal correction were overwhelmingly preferred over flat-top 25 bifocals. A preference was found for the optical advantage of acceptable vision at all distances over the disadvantages of narrower field afforded by the progressive multifocal design.
对若干受试者进行了评估，以确定两种形式的多焦点镜片（一种是渐进屈光度形式，另一种是标准平顶25双焦点形式）的光学特性的相对影响。进行了接受度比较，特别强调了对中间视觉范围和近视野宽度的测试。渐进式多焦点矫正形式远比平顶25双焦点镜片更受青睐。人们发现，与渐进多焦点设计所带来的视野较窄的缺点相比，在所有距离都能获得可接受视力的光学优势更受偏爱。
