Department of Primary Care & Public Health Sciences Kings College London London UK.
Institute of Ophthalmology, UCL London UK.
Brain Behav. 2017 Oct 29;7(12):e00866. doi: 10.1002/brb3.866. eCollection 2017 Dec.
In the United Kingdom, when an individual's sight falls to and remains at a certain threshold, they may be offered registration as sight impaired. Recent analysis of causes of registrable sight impairment in England/Wales indicated that visual impairment due to stroke had increased as a proportionate cause of sight loss. We aim to assess whether there is evidence of an increase in incidence of certification for sight impairment due to stroke in England/Wales between 2008 and 2014.
The number of certifications with a main cause of sight impairment being stroke was obtained from the Certifications Office London. Directly standardized rates per 100,000 were computed with 95% confidence intervals and examined. Poisson regression was used to assess evidence of trend over time.
In the year ending 31st March 2008, 992 people were newly certified with stroke with an estimated DSR of 2.1 (2.0 to 2.2) per 100,000 persons at risk. In the year ending March 31st 2014, there were 1310 certifications with a DSR of 2.5 (2.4 to 2.7). Figures were higher for men than women. Poisson regression indicated an estimated incidence rate ratio of 1.03 per year with 95% confidence intervals of 1.028 to 1.051, < .001.
These data suggest a small but statistically significant increase in the incidence of certifiable visual impairment due to stroke between 2008 and 2014. Figures are, however, considerably lower than estimated, perhaps suggesting that more should be done to address the visual needs of those who have suffered stroke.
在英国，当个人的视力下降并保持在一定水平时，他们可能会被登记为视力受损。最近对英格兰/威尔士可登记视力障碍原因的分析表明，由于中风导致的视力障碍已成为视力丧失的一个比例原因。我们旨在评估 2008 年至 2014 年间，由于中风导致视力障碍的登记人数是否有增加的证据。
从伦敦认证办公室获得因主要原因是中风而获得认证的人数。直接标准化率为每 10 万人 95%置信区间，并进行了检查。使用泊松回归评估随时间的趋势证据。
在截至 2008 年 3 月 31 日的一年中，有 992 人因中风而获得新认证，风险人群中每 10 万人的估计 DSR 为 2.1（2.0 至 2.2）。在截至 2014 年 3 月 31 日的一年中，有 1310 人获得了 DSR 为 2.5（2.4 至 2.7）的认证。男性的数字高于女性。泊松回归表明，每年的发病率比为 1.03，95%置信区间为 1.028 至 1.051，<0.001。
这些数据表明，2008 年至 2014 年间，由于中风导致可认证视力障碍的发病率略有但具有统计学意义的增加。然而，这些数字远低于估计值，这可能表明应该做更多的工作来满足那些遭受中风的人的视觉需求。
