■我们的研究旨在研究从患者到固定目标的距离减小对具有已知距离近差的斜视测量的影响。
■一位儿科眼科医生在我们的标准距离18英尺处进行斜视测量,并与在距固定目标16、14、12和10英尺处进行的测量进行比较。临床上有意义的差异被定义为>2.5棱镜屈光度(PD),因为这种程度的差异可能会改变手术计划。
■39个科目,包括22种异形物和17种异形物,包括在这项研究中。在16、14、12和10英尺的长度与18英尺相比,外角体组的平均棱镜屈光度差(PDD)为1.3(SD1.9,范围0-6),1.3(SD2.2,范围0-8),1.7(SD3.2,范围0-14),和2.8(SD4.4,范围0-14),分别。在俯卧撑中,相同距离的平均PDD为1.1(SD1.9,范围0-7),2.1(SD2.6,范围0-7),3.9(SD4.9,范围0-19),和4.3(SD5.1,范围0-19)。与18英尺相比,在16、14、12和10英尺处PDD>2.5的异形体的百分比为13.6%(n=3),13.6%(n=3),18.2%(n=4),和27.3%(n=6),分别。在esotrope组中,11.8%(n=2),35.3%(n=6),47.1%(n=8),47.1%(n=8)在相同距离处的PDD>2.5,分别。
■这项初步研究首次研究了在从患者到固定目标的各种非镜像距离处测量的斜视角度的变化。我们的方法定义了一个框架,可用于更强大的研究,以进一步了解房间长度对斜视评估的影响。
UNASSIGNED: Our study aims to investigate the effect of decreasing distance from the patient to the fixation target on the measurement of strabismus with a known distance-near disparity.
UNASSIGNED: Strabismus measurements were taken by one pediatric ophthalmologist at our standard distance of 18 feet and compared to those taken at 16, 14, 12, and 10 feet from the fixation target. A clinically meaningful difference was defined as >2.5 prism diopters (PD), since a difference of that magnitude may alter surgical planning.
UNASSIGNED: Thirty-nine subjects, including 22 exotropes and 17 esotropes, were included in this study. Mean prism diopter difference (PDD) in the exotrope group at lengths of 16, 14, 12, and 10 feet compared to 18 feet were 1.3 (SD 1.9, range 0-6), 1.3 (SD 2.2, range 0-8), 1.7 (SD 3.2, range 0-14), and 2.8 (SD 4.4, range 0-14), respectively. Among esotropes, the mean PDD at the same distances were 1.1 (SD 1.9, range 0-7), 2.1 (SD 2.6, range 0-7), 3.9 (SD 4.9, range 0-19), and 4.3 (SD 5.1, range 0-19). The percentages of exotropes with a PDD of >2.5 at 16, 14, 12, and 10 feet compared to 18 feet were 13.6% (n = 3), 13.6% (n = 3), 18.2% (n = 4), and 27.3% (n = 6), respectively. In the esotrope group, 11.8% (n = 2), 35.3% (n = 6), 47.1% (n = 8), and 47.1% (n = 8) had a PDD of >2.5 at the same distances, respectively.
UNASSIGNED: This pilot study is the first to investigate the change in measured angle of strabismus at various non-mirrored distances from the patient to the fixation target. Our methodology defines a framework that could be used in a higher-powered study to further our understanding of the effect of room length on strabismus evaluation.