一种量化视网膜前膜患者视物变形症的新方法。

A new method for quantification of metamorphopsia in patients with epiretinal membrane.

作者信息

Shinoda K, Ishida S, Kawashima S, Matsuzaki T, Yamada K, Katsura H

机构信息

Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.

出版信息

Jpn J Ophthalmol. 2000 Jul-Aug;44(4):424-7. doi: 10.1016/s0021-5155(00)00173-8.

DOI:10.1016/s0021-5155(00)00173-8

PMID:10974300

Abstract

PURPOSE

A new method for quantification of metamorphopsia was applied to study distorted vision in patients with epiretinal membrane.

METHOD

Sixty-three patients with unilateral epiretinal membrane in the macula were examined. A modified Amsler chart (a grid of black lines on a white background measuring 12 x 12 cm with grid squares of 2 x 2 cm) was prepared. If patients saw any of the grid lines as irregular or curved, they were asked to trace these on the chart. The length of all lines drawn by the patients was measured, except those on the outer border. The length of the grid is 1200 mm, but it should be drawn longer by patients with metamorphopsia. The severity of metamorphopsia was also scored subjectively and the relationship of grid length to the subjective score and the visual acuity was analyzed.

RESULTS

The grid length ranged from 1200 to 1259 mm (mean = 1223.3 mm) and was correlated significantly with the subjective score (P <.01, rho =.387).

CONCLUSION

This method might be applicable for evaluating the severity of metamorphopsia and the surgical outcome in patients with epiretinal membrane.

摘要

目的

应用一种新的变视症量化方法来研究视网膜前膜患者的视力扭曲情况。

方法

对63例黄斑区单侧视网膜前膜患者进行检查。准备一张改良的Amsler表（白色背景上的黑色线条网格，尺寸为12×12厘米，网格方块为2×2厘米）。如果患者将任何一条网格线视为不规则或弯曲的，要求他们在表上描绘出来。测量患者绘制的所有线条的长度，但不包括外部边界的线条。网格长度为1200毫米，但有变形视的患者绘制的长度会更长。还对变形视的严重程度进行主观评分，并分析网格长度与主观评分及视力的关系。