Salomão Solange Rios, Ejzenbaum Fabio, Berezovsky Adriana, Sacai Paula Yuri, Pereira Josenilson Martins
Departamento de Oftalmologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil.
Arq Bras Oftalmol. 2008 Jul-Aug;71(4):475-9. doi: 10.1590/s0004-27492008000400002.
To determine age norms for grating visual acuity and interocular acuity differences measured by the sweep-visually evoked potentials (VEP) technique in the first three years of life.
Monocular grating visual acuity was measured using the sweep-VEP in 67 healthy normal infants and children in the first 36 months of life.
Sweep-VEP grating acuity ranged from 0.80 logMAR (20/125 Snellen equivalent) in the first month of life to 0.06 logMAR (20/20 Snellen equivalent) at 36 months of age. Lower normal limits (95th percentile limit) ranged from 0.95 logMAR (20/180) to 0.12 logMAR (20/25) with a progression of approximately 3 octaves in the first 36 months of age. The largest acceptable interocular acuity difference for clinical purposes was 0.10 logMAR.
Age norms for grating acuity along with interocular acuity differences were determined using the sweep-VEP technique. These norms should be incorporated in clinical practice for precise diagnosis of visual status in infants and preverbal children.
确定使用扫描视觉诱发电位（VEP）技术测量的1至3岁婴幼儿的光栅视力和双眼视力差异的年龄常模。
对67名1至36个月大的健康正常婴幼儿使用扫描VEP测量单眼光栅视力。
扫描VEP光栅视力范围从出生后第1个月的0.80 logMAR（相当于20/125 Snellen视力）到36个月大时的0.06 logMAR（相当于20/20 Snellen视力）。下限正常值（第95百分位数）范围从0.95 logMAR（20/180）到0.12 logMAR（20/25），在出生后的前36个月内视力进展约为3个倍频程。临床可接受的最大双眼视力差异为0.10 logMAR。
使用扫描VEP技术确定了光栅视力和双眼视力差异的年龄常模。这些常模应纳入临床实践，用于精确诊断婴幼儿和学语前儿童的视力状况。
