Gellman M, Hirsch J
Am J Optom Physiol Opt. 1975 Feb;52(2):128-33.
A study, comparing Soflens TM contact lenses (polymacon) with hard contact lenses and spectacles, and using 150 male and female patients, has been done. Volunteers qualified for the study if they had healthy eyes and had worn one type of corrective lenses for six months before they were interviewed and examined. During each patient's examination, his type of correction was not known. Such matters as visual acuity, corneal measurements and average wearing time were considered. (Soflens contact lenses were felt to be safer than hard contact lenses.)
一项针对150名男性和女性患者进行的研究，将Soflens TM隐形眼镜（聚甲基丙烯酸甲酯）与硬性隐形眼镜及眼镜进行了比较。如果志愿者眼睛健康，且在接受访谈和检查前已佩戴一种矫正镜片达六个月，则符合该研究的条件。在每位患者的检查过程中，其矫正类型是未知的。研究考虑了诸如视力、角膜测量和平均佩戴时间等因素。（人们认为Soflens隐形眼镜比硬性隐形眼镜更安全。）
