摘要
目的了解对比敏感度、噪声、拥挤现象三种视知觉检查在正常儿童与屈光不正性弱视儿童间的差异。设计前瞻性病例系列。研究对象正常儿童50例,屈光不正性弱视儿童50例。方法应用国家医疗保健器具工程研究中心研发的视知觉检查测评系统中的噪声视力表、拥挤视力表、对比敏感度视力表检查正常儿童及屈光不正性弱视儿童各50例。根据检测结果对弱视组和正常组进行比较分析,并对弱视组中不同弱视程度和不同屈光度之间进行比较。主要指标对比敏感度、噪声、拥挤现象的正常和异常人数及构成比。结果弱视儿童及正常儿童对比敏感度异常者分别为60眼(60.00%)和15眼(15.00%),噪声异常者分别为62眼(62.00%)和30眼(30.00%),拥挤异常者分别为56眼(56.00%)和0眼(0%)(P均=0.000)。轻度、中度、重度弱视者对比敏感度异常者分别为32眼(51.61%)、20眼(66.67%)、8眼(100%)(P=0.005);拥挤异常者分别为30眼(48.39%)、18眼(60.00%)、8眼(100%)(P=0.010)。噪声异常者分别为39眼(69.90%)、18眼(60.00%)、5眼(62.50%)(P=0.868)。弱视患者轻度、中度、重度屈光不正者,对比敏感度异常者分别为33眼(70.21%)、9眼(34.12%)、17眼(62.96%)(P=0.011);噪声异常者分别为30眼(63.83%)、15眼(57.69%)、17眼(62.96%)(P=0.868);拥挤异常者分别为30眼(63.83%)、11眼(42.31%)、17眼(62.96%)(P=0.172)。结论对比敏感度、噪声、拥挤现象三种视知觉检查可以用来评估弱视患者视知觉损害状态。
Objective To investigate the difference between contrast sensitivity, noise and crowding phenomenon in normal and ametropic amblyopia children. Design Prospective case series. Participants 50 normal children and 50 ametropic amblyopia children. Method Using the noise visual acuity test chart, crowded visual acuity chart and contrast sensitivity visual chart of the visual perception system developed by the National Medical Care Apparatus Engineering Research Center, normal and ametropic amblyopia children were examined in Beijing Tongren Hospital. Main Outcome Measures The number and the constituent ratio of normal and abnormal children in contrast sensitivity, noise and crowding phenomenon. Results The abnormal results of contrast sensitivity in ametropic amblyopia children and normal children were 60 eyes （60%） and 15 eyes （15%） respectively; the abnormal result of noise visual acuity were 62 eyes （62%） and 30 eyes （30%） respectively; the crowded visual acuity were 56 eyes （56%） and 0 eye respectively （all P=0.000）. In mild, moderate and severe ametropic amblyopia children, the abnormal results of contrast sensitivity were 32 eyes （51.61%）, 20 eyes （66.67%） and 8 eyes （100%） respectively （P=0.005）, the abnormal results of crowding phenomenon were 30 eyes （48.39%）, 18 eyes （60%） and 8 eyes （100%） respectively （P=0.010）, the abnormal results of noise were 39 eyes （69.90%）, 18 eyes （60.00%） and 5 eyes （62.5%） respectively （P=0.868）. In mild, moderate and severe refractive error children, the abnormal results of contract sensitivity were 33 eyes （70.21%）, 9 eyes （34.12%） and 17 eyes （62.96%） respectively （P=0.011）, the abnormal results of noise were 30 eyes （63.83%）, 15 eyes （57.69%） and 17 eyes （62.96%） respectively （P=0.868）, the abnormal results of crowding phenomenon were 30 eyes （63.83%）, 11 eyes （42.31%） and 17 eyes （62.96%） respectively （P=0.172）. Conclusion Contrast sensitivity, noise and crowding phenomenon in visual perception tests can be used to estimate the impairment of visual perception in amblyopia children. （Ophthalmol CHN, 2010, 19： 113-116）
出处
《眼科》
CAS
2010年第2期113-116,共4页
Ophthalmology in China
关键词
视知觉
弱视
视力
视觉噪声
对比敏感度
拥挤现象
visual perception
amblyopia
vision
visual noise
contrast sensitivity
crowding phenomenon
