摘要
目的基于3D视频技术,提供一种描绘斜视抑制暗点形态、范围、大小的双眼抑制地形图检查新方法。设计回顾性病例系列。研究对象16例传统检查存在抑制的内斜视儿童,平均年龄(6.81±1.68)岁,其中共同性内斜视10例,调节性内斜视3例,微小内斜3例。10例眼位及立体视正常儿童作为对照组,平均年龄(6.22±1.64)岁。方法采用偏振光眼镜实现双眼分视,运用3D视频技术,以形状、对比度相同但大小不同的两个视标检测双眼同时注视时的抑制暗点范围,通过计算机程序及检查软件绘制抑制地形图,并计算抑制暗点面积大小。主要指标不同类型斜视抑制暗点面积像素值。结果 10例共同性内斜视患儿抑制暗点面积平均为(101 266±45 695)像素,3例微小内斜视患儿抑制暗点面积为(102 834±37 482)像素,3例调节性内斜视患儿裸眼及戴镜检查抑制暗点面积分别为(27 206±11 108)像素和(7664±6948)像素,戴镜检查抑制暗点面积小于裸眼检查(P=0.028)。16例内斜患儿视力相对差眼注视时抑制暗点面积较对侧眼注视时更大(t=3.444,P=0.007)。正常对照儿童10例,在相同检查距离及显示范围内,未能找到相应的抑制暗点,与内斜视患儿相比差异有显著性(t=9.911,P=0.000)。结论偏振光双眼分视技术联合双眼抑制检查程序可用于检查及描绘双眼抑制地形图及其形态,大小与患儿的斜视类型、屈光状态有关。
Objective We conducted this study to provide a simple and effective drawing method for examining suppression scotoma in strabismus. Design Retrospective case series. Participants We reported 16 cases of obvious visual suppression （mean age=6.81±1.68 years）, including ten cases of concomitant esotropia, three cases of accommodative esotropia, and three cases of microtropia, and10 cases of normal controls with orthotropia and normal stereopsis （mean age=6.22±1.64 years）. Methods The binocular vision separation was performed using polarized glasses and three-dimensional video technology. Binocular suppression was detected using two different sized sighting targets with the same shape and contrast. The computer recorded the suppression scotoma and calculated the scotoma area. Main Outcome Measures Parameters of suppression scotoma area. Results In the ten cases of concomitant esotropia, the suppression scotoma area is 101266±45695 pixels. In the 3 micrtropia cases, the suppression scotoma area is 102834±37482 pixels. In the 3 cases of accommodative esotropia inspected without glasses the scotoma area is 27206±11108 pixels, when wearing glasses it was 7664±6948 pixels （P=0.028）. The greater range of suppression scotoma was produced by the relatively poor eye in all the 16 esotropia patients （t=3.444,P=0.007）. In the 10 normal children, no fixed suppression scotoma was found on same inspecting condition（t=9.911,P=0.000）. Conclusions The binocular vision separation by polarized glasses and three-dimensional video technology is a simple and effective method for examining suppression scotoma in strabismus. A definite correlation was found between suppression topographic map shape and size, and strabismus degree in children.
出处
《眼科》
CAS
CSCD
北大核心
2015年第5期320-323,共4页
Ophthalmology in China
基金
北京市教育委员会科技计划重点项目(KZ201310025026)
关键词
抑制暗点
双眼分视
偏振光
地形图
斜视
弱视
suppression scotoma
binocular polarization
polarized light
topographic maps
strabismus
amblyopia
