J Pediatr Ophthalmol Strabismus. 2020 Sep 1;57(5):305-308. doi: 10.3928/01913913-20200701-02.
To study interobserver variability for measurement of grating acuity in preverbal and nonverbal children with developmental delay using Lea Grating Paddles (Lea Hyvärinen).
In this prospective study, preverbal patients younger than 3 years and older nonverbal patients (with developmental delay) were included. Those with poor neck holding were excluded. Binocular and monocular visual acuity assessment was done simultaneously using Lea Grating Paddles by two examiners who were blinded from each other's results.
Thirty-one children were tested (19 [61.29%] males and 12 [38.71%] females). The mean age was 28.5 months (range: 4 to 44 months). A total of 92% of the observations showed interobserver agreement of 0.5 octave or better in binocular testing. Results for monocular testing showed interobserver agreement (0.5 octaves or better) in 95.65% and 95.23% of right and left eyes, respectively. Combined results showed agreement better than 0.5 octaves in 94.20%. The mean binocular visual acuity was 2.07 and 2.14 cycles per degree (cpd) for the first and second observer, respectively (P = .59). Similarly, the mean monocular visual acuity for the right and left eyes was 0.98 and 0.97 cpd for observer 1 and 0.89 and 0.79 cpd for observer 2, respectively (P = .91 and .14, for the right and left eyes, respectively).
Interobserver variability for grating acuity measurement using Lea Grating Paddles is minimal, signifying it to be a reliable and reproducible alternative to conventional preferential looking testing procedures. [J Pediatr Ophthalmol Strabismus. 2020;57(5):305-308.].
使用 Lea 光栅桨（Lea Hyvärinen）研究言语前和非言语发育迟缓儿童光栅视力测量的观察者间变异性。
在这项前瞻性研究中，纳入了年龄小于 3 岁的言语前患者和年龄较大的非言语患者（发育迟缓）。排除那些颈部支撑力差的患者。两名检查者同时使用 Lea 光栅桨进行双眼和单眼视力评估，他们彼此的结果是盲法的。
共对 31 名儿童进行了测试（男 19 例[61.29%]，女 12 例[38.71%]）。平均年龄为 28.5 个月（范围：4 至 44 个月）。双眼测试中，92%的观察结果显示观察者间的一致性为 0.5 个视阶或更好。单眼测试的结果显示，右眼和左眼的观察者间一致性（0.5 个视阶或更好）分别为 95.65%和 95.23%。综合结果显示，94.20%的结果优于 0.5 个视阶。第一和第二观察者的平均双眼视力分别为 2.07 和 2.14 个视循环/度（cpd）（P =.59）。同样，观察者 1 的右眼和左眼的平均单眼视力分别为 0.98 和 0.97 cpd，观察者 2 的右眼和左眼的平均单眼视力分别为 0.89 和 0.79 cpd（右眼和左眼的 P 值分别为.91 和.14）。
使用 Lea 光栅桨进行光栅视力测量的观察者间变异性很小，表明它是一种可靠且可重复的替代传统偏好测试程序的方法。[J 儿科眼科斜视。2020;57(5):305-308.]。
