Nørregaard J C, Petersen P B, Andersen T F
Københavns Universitet, Institut for Folkesundhedsvidenskab.
Ugeskr Laeger. 1998 Jun 22;160(26):3924-8.
In Denmark the number of cataract extractions has increased to 350% from 1980 to 1991. During the same period the elderly population at risk has only increased to 117%, and thus cannot account for the large increase in the number of extractions. In order to investigate whether more comprehensive clinical indications could be a possible explanation, we compared pre-operative visual acuity and visual impairment in two consecutive samples of Danish cataract surgery patients obtained in 1980 (n = 73) and in 1992 (n = 270). Criteria for inclusion were similar and both samples were representative for the whole country. During the period mean pre-operative visual acuity increased from 0.04 to 0.16 in the eye enlisted for surgery (p < 0.001). Visual functional impairment could be compared by using the same questionnaire for patient interview in 1992 as was used in 1980. In 1992, the degree of impairment was significantly less for reading, outdoor orientation and self care activities. A change in surgical threshold or clinical indications for surgery appears to be a major contributing factor to the large increase in surgical rates.
在丹麦，1980年至1991年期间白内障摘除手术的数量增长了350%。在同一时期，有风险的老年人口仅增长到117%，因此无法解释摘除手术数量的大幅增长。为了调查更广泛的临床指征是否可能是一个解释，我们比较了1980年（n = 73）和1992年（n = 270）获得的丹麦白内障手术患者的两个连续样本的术前视力和视觉损害情况。纳入标准相似，两个样本都代表了整个国家。在此期间，准备接受手术的眼睛的术前平均视力从0.04提高到了0.16（p < 0.001）。可以通过使用与1980年相同的问卷对患者进行访谈来比较视觉功能损害情况。1992年，阅读、户外定向和自我护理活动方面的损害程度明显较轻。手术阈值或手术临床指征的变化似乎是手术率大幅上升的一个主要因素。
