临床条件下视频增强 Hirschberg 试验的可靠性。

The reliability of a video-enhanced Hirschberg test under clinical conditions.

作者信息

Hasebe S, Ohtsuki H, Tadokoro Y, Okano M, Furuse T

机构信息

Department of Ophthalmology, Okayama University Medical School, Japan.

出版信息

Invest Ophthalmol Vis Sci. 1995 Dec;36(13):2678-85.

PMID:7499090

Abstract

PURPOSE

To examine the reliability and usefulness of a video-based Hirschberg test under clinical conditions.

METHODS

The authors estimated ocular deviation in 87 patients with strabismus through automated analysis of corneal reflex displacement using a video refractor. The reproducibility of measurement, the comparison with the prism and alternate cover test (PACT), and the distribution of the Hirschberg ratio were investigated.

RESULTS

The 95% limits of agreement of the video-based Hirschberg test evaluated by repeated measurements were +/- 0.18 mm (equivalent to +/- 2.2 degrees or +/- 3.8 prism diopters [PD] of calculated strabismic deviation) for the horizontal deviation and +/- 0.28 mm (equivalent to +/- 3.4 degrees or +/- 5.9 PD) for the vertical deviation. The 95% limits of agreement between the Hirschberg measures and the PACT were within +/- 7.8 degrees or +/- 13.7 PD. The average (+/- SD) Hirschberg ratio was 12.3 +/- 1.2 degrees/mm or 21.8 +/- 2.1 PD/mm.

CONCLUSIONS

The video-enhanced Hirschberg measurement shows good reproducibility and ease of application, even in the testing of infants. In quantitative analysis, however, systematic measurement error resulting from intersubject variance of the Hirschberg ratio should be taken into consideration.

摘要

目的

在临床条件下检验基于视频的 Hirschberg 试验的可靠性和实用性。

方法

作者通过使用视频验光仪对角膜反射位移进行自动分析，估计了 87 例斜视患者的眼位偏斜。研究了测量的可重复性、与棱镜交替遮盖试验（PACT）的比较以及 Hirschberg 比率的分布情况。

结果

通过重复测量评估的基于视频的 Hirschberg 试验的 95%一致性界限，水平偏差为±0.18 毫米（相当于计算得出的斜视偏差的±2.2 度或±3.8 棱镜度[PD]），垂直偏差为±0.28 毫米（相当于±3.4 度或±5.9 PD）。Hirschberg 测量值与 PACT 之间的 95%一致性界限在±7.8 度或±13.7 PD 以内。平均（±标准差）Hirschberg 比率为 12.3±1.2 度/毫米或 21.8±2.1 PD/毫米。