诱导性眼内杂散光对视区测试的影响。

The effect of induced intraocular straylight on perimetric tests.

机构信息

Department of Optometry and Visual Sciences, City University London, London, United Kingdom.

出版信息

Invest Ophthalmol Vis Sci. 2011 Jun 1;52(6):3676-82. doi: 10.1167/iovs.10-6642.

DOI:10.1167/iovs.10-6642

PMID:21273546

Abstract

PURPOSE

To investigate the effect of intraocular straylight (IOS) on threshold measurements made by four types of perimetry: standard automated perimetry (SAP), frequency-doubling technology (FDT) perimetry, flicker-defined form (FDF) perimetry, and the Moorfields Motion Displacement Test (MDT).

METHODS

Six healthy young (21-29 years) psychophysically experienced observers were tested five times with each perimeter, each time with one of five different white opacity filters (WOFs), to induce various levels of IOS. Each WOF gave rise to an increase in IOS, measured with a straylight meter, of between 10% and 200% from baseline and ranging in effect from normal ageing to significant cataract. The change in sensitivity from baseline was normalized, allowing comparison of standardized (z) scores (change divided by the standard deviation of normative values) for each instrument.

RESULTS

Average SAP, FDT, and FDF thresholds were significantly affected (P < 0.001) by moderate to large increases in IOS (50%-200%), whereas MDT remained largely unaffected over the same range of straylight levels.

CONCLUSIONS

The Moorfields MDT shows greater resilience to the effects of additional straylight compared with SAP, FDT, or FDF.

摘要

目的

研究眼内杂散光（IOS）对 4 种类型的视野计（SAP、倍频技术（FDT）、闪烁定义形式（FDF）和 Moorfields 运动位移测试（MDT））进行阈值测量的影响。

方法

6 名健康的年轻（21-29 岁）心理物理学经验丰富的观察者使用每种视野计进行了五次测试，每次使用五种不同的白色不透明度滤光片（WOF）中的一种，以诱导不同程度的 IOS。每个 WOF 都会导致与基线相比增加 10%至 200%的 IOS，其影响范围从正常老化到明显白内障。从基线的敏感性变化被归一化，从而可以比较每个仪器的标准化（z）分数（变化除以正常值的标准差）。