暗适应
- dark adaptation;scotopia
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在暗适应条件下,蓝圆鲹幼、成鱼对蓝、绿色光的趋光率最高,对红光的趋光率最低。
Under dark adaptation , phototactic ratio of round scad ( both juvenile-and adult ) towards blue and green light is the highest , while that towards red light is the lowest .
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暗适应视网膜电图a波、b波振幅和峰时和正常对照比较无显著差异。
The a-wave and b-wave of the dark adaptation electroretinogram had little change .
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经过暗适应的晶体柱可以对不同物距的目标形成清晰的正重叠像,像的大小随物距的增大而减小。
A real optical superposition image was formed by dark-adapted crystalline cones for an object at different distances and its size decreased as the object distance increased .
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基于DSP嵌入式系统的视网膜电图暗适应仪设计
DSP Based Instrument Design for Recording ERG Signal and Plotting Dark-Adaptation Curves
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13例暗适应白光b波波幅下降或(和)潜伏期延长(P<0001)。
Thirteen had scotopic b-wave amplitudes reduction or prolonged implicit time with bright-white flash stimulus ( P < 0 001 ) .
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暗适应及明适应状态下正常SD大鼠视觉诱发电位的比较
Difference between the dark and light adapted flash visual evoked potentials recorded from normal SD rats
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暗适应测定显示有VA缺乏。
Display Measurement of dark adaptation showed that Vitamin A was deficient .
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对于完全暗适应的眼,强度约为绝对阈10~3倍的弥散光照射全部视域,卽足以引起可被察觉的b波。
In the fully dark-adapted eye , stimulating the whole visual field with diffuse light at an intensity about 10 ~ 3 times the absolute threshold is capable of eliciting a perceptible b-wave .
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结果当兔眼玻璃体注入的双氯芬酸钠大于或/和等于700μg时,ERG检查发现暗适应和明适应b波波幅明显下降。
Results The b wave amplitudes of light and dark adaptation ERG were significantly reduced when the dosage of diclofenac sodium was more than 700 μ g.
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分别在注射前及注射后第2、第4、第7、第10天对暗适应ERGB波进行检查。
Before injection and on the 2nd , 4th , 7th , and 10th day after injection the scotopic b-waves of the ERG were measured .
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方法对一组白内障患者手术前后暗适应ERG、闪烁ERG检查。
Method The dark adaptation ERG and the Flicker ERG were performed before and after the cataractous surgery .
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白天和夜晚暗适应一定时间,在相同的相对光强度下,雄成虫的ERG值大于雌成虫;
In the same conditions , the ERG value of the male adult was larger than the female ;
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实验证实,在适当的酸度调节下暗适应菌紫质(BR)的光致变色反应由B→蓝膜→P→Q→B的循环转换构成。
It was shown experimentally that the photochromism of the bacteriorhodopsin ( BR ) consists of circulative state-transformations , B → blue membrane → P → Q → B , under an appropriate control of acidity .
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对11例已得到病理证实的视网膜母细胞瘤的暗适应ERG作了分析。其中8只眼为无波型,3只眼为降低型。
Dark adaptation ERGs of11 cases with retinoblastoma demonstrated pathologically were analysed . 8 eyes were extinguish , 3 eyes were subnormal .
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方法采用YAKⅠ型暗适应客观检查仪,检查9例(9眼)中心性浆液性脉络膜视网膜病变患者快速暗适应时间,并与健眼进行对照。
Methods YAK-I darkness adaption apparatus was used to detect the adaption time in 9 cases ( 9 eyes ) with cardio-serous chorioretinopathy and then was compared with that of the healthy eyes .
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目的:观察65~75岁正常老年人暗适应闪光视网膜电图(FERG),评价其视网膜功能。
HT5SS ] [ WT5BZ ] [ ST5BZ ] Objective : To observe the scotopic flash electroretinogram ( F ERG ) in 65 ~ 75 years old normal senile people and evaluate their retinal functions .
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方法所有SD大鼠经循环光环境适应7天,实验前暗适应36小时,分别于光照3、6、9、12、15、18小时,灌流固定,摘除眼球。
Methods All Sprague-Dawley rats were maintained under cyclic light environment for 7 days , the rats were kept in darkness for 36 hours before experiment . The rats were killed after 3,6,9,12,15 and 18 hours continuous intense white light exposure .
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方法首先将肿瘤细胞LLC细胞悬液接种至已接受2周光暗适应的雄性C57BL/6J小鼠皮下。
Methods LLCs were cultured , harvested , made into cell suspension and planted into male C57BL / 6J mice which had been raised in 12h light and dark cycles for 2 weeks .
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以血清维生素A含量,相对剂量反应(RDR)和暗适应功能(暗适应恢复时间和绝对阈值)检查为指标,在严格膳食控制下,进行了60天实验。
The serum retinol , relative dose response ( RDR ) and dark adaptation function ( dark adaptation time , absolute threshold ) were determined .
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快速暗适应时间在1分钟以内,(3)视网膜光感绝对阈值,看到0.2×10~(-6)asb视标,时间不超过30分钟;
Dark adaptation time within one minute ; ( 3 ) retinal photosensitivity ( absolute threshold ) down to 0.2 × 10 - (?) asb within 30 minutes ;
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Phycomyces向光性中阈下光控制暗适应动态作用谱
Action spectrum for subliminal light control of dark adaptation kinetics in Phycomyces phototropism
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统计和分析了580眼视网膜色素变性患者的视力、视野、暗适应和ERG检查结果。
This paper presents the results of statistics and analysis of 580 eyes of patients with retinitis pigmentosa in which vision , visual field , dark adaptation and electroretinography ( ERG ) were examined .
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YA-2型暗适应计的设计及应用
The design and application of YA-2 dark adaptometer
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结果显示,晶体混浊及正常的AMD患者、除黄斑绿光阈值外,黄斑光阈值、色调分辨力及暗适应差异无统计学显著性。
The results showed that the light threshold 、 hue discrimination and dark adaptation threshold were not statistically significant difference between the patients with normal lens and lens opacity , except macular green light threshold in early AMD patients .
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结论:海拔5380m持续性慢性缺氧6个月光感系统可发生功能性的改变,暗适应时间延长,供氧后光觉功能在短时间内迅速恢复至平原水平。
Conclusion : Chronic hypoxia can led to a functional change of dark visual in youths but it quickly recover after inspiring oxygen .
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对视觉的影响主要表现在:暗适应时间延长,视力下降,色觉减退,甚至出现视网膜出血,引起高原视网膜病(high-altituderetinopathy,HAR)。
High altitude hypoxia has effects on visual function , for example , dark adaptation time prolonged , vision decreased , color vision decreased , severely retinal hemorrhage . Retinal damage at high altitude is called high-altitude retinopathy ( HAR ) .
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我们建议的RDA要求各种营养素的充分供给,特别是与暗适应密切相关的蛋白质、VA、核黄素、锌及硒。
We suggest the RDA characterized by sufficient nutrient supply , especially protein , vit A , riboflavin , Zn and Se , which are closely related to the function of dark adaptation , i. e. energy 2600 ~ 3000kcal , protein 100 ~ 110g , Vit .
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本研究对色温1800K&3000K范围内的三种白光与620nm红光仪表的短时暗适应进行了实验研究。
This is an experimental study on short term dark adaptation under instrument illumunation of white or red lights with color temperatures in the range of 1800K 3000K .
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用电子显微镜研究了家蝇(Muscadomestica)复眼小网膜的一般结构,特殊结构和小网膜细胞的对称性排列,并比较了在暗适应、明适应和强光适应状态下小网膜细胞的结构。
The common , particular structure and the arrangement pattern of the retinula in the compound eye of the housefly Musca domestica have been investigated , and the structures of the retinula cells here been compared with an electron microscope under dark , bright and high intensity light adaptation condition .
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方法对33例(60眼)干性AMD患者和18例(30眼)正常人应用稳态的闪烁光LERG和全视野暗适应闪光ERG检测,测量振幅和峰时。
Methods 33 patients ( 60 eyes ) with dry form AMD as well as 18 control subjects ( 30 eyes ) were tested with steady state flicker LERG and total visual field dark adaptation flash ERG amplitudes and implicit times of the responses were measured .