LEA光栅测试用于评估4个月以下正常婴儿的检测光栅视力。

The LEA Grating Test in assessing detection grating acuity in normal infants less than 4 months of age.

作者信息

Martini Giovana, Netto Abimael A, Morcillo André M, Gagliardo Heloisa G R G, de Oliveira Denise F

机构信息

School of Medical Sciences, University of Campinas FCM-UNICAMP, Campinas, Brazil.

出版信息

J AAPOS. 2014 Dec;18(6):563-6. doi: 10.1016/j.jaapos.2014.08.006. Epub 2014 Nov 12.

DOI:10.1016/j.jaapos.2014.08.006

PMID:25459200

Abstract

PURPOSE

To assess binocular detection grating acuity using the LEA GRATINGS test to establish age-related norms in healthy infants during their first 3 months of life.

METHOD

In this prospective, longitudinal study of healthy infants with clear red reflex at birth, responses to gratings were measured at 1, 2, and 3 months of age using LEA gratings at a distance of 28 cm. The results were recorded as detection grating acuity values, which were arranged in frequency tables and converted to a one-octave scale for statistical analysis. For the repeated measurements, analysis of variance (ANOVA) was used to compare the detection grating acuity results between ages.

RESULTS

A total of 133 infants were included. The binocular responses to gratings showed development toward higher mean values and spatial frequencies, ranging from 0.55 ± 0.70 cycles per degree (cpd), or 1.74 ± 0.21 logMAR, in month 1 to 3.11 ± 0.54 cpd, or 0.98 ± 0.16 logMAR, in month 3. Repeated ANOVA indicated differences among grating acuity values in the three age groups.

CONCLUSIONS

The LEA GRATINGS test allowed assessment of detection grating acuity and its development in a cohort of healthy infants during their first 3 months of life.

摘要

目的

使用LEA光栅测试评估双眼检测光栅视力，以建立健康婴儿出生后前3个月与年龄相关的标准。

方法

在这项对出生时红光反射正常的健康婴儿进行的前瞻性纵向研究中，在婴儿1、2和3个月大时，使用LEA光栅在28厘米的距离测量其对光栅的反应。结果记录为检测光栅视力值，将其整理成频率表并转换为一个倍频程尺度进行统计分析。对于重复测量，使用方差分析（ANOVA）比较不同年龄组的检测光栅视力结果。

结果

共纳入133名婴儿。双眼对光栅的反应显示出朝着更高的平均值和空间频率发展，范围从第1个月的0.55±0.70周/度（cpd），即1.74±0.21对数最小分辨角（logMAR），到第3个月的3.11±0.54 cpd，即0.98±0.16 logMAR。重复方差分析表明三个年龄组的光栅视力值存在差异。