视力

Higher levels of outdoor activity were associated with more hyperopic refractions and lower myopia prevalence in the 12-year-old students.

结果12岁龄儿童中，户外活动多则远视力和低度近视力者多。

Mild hyperopia in young people, because of its strong regulation, vision still capable of maintaining normal, so asymptomatic, highly hyperopic eyes have different degrees of impaired vision, but also prone to fatigue.

轻度远视是在青少年时，由于其调节力强，视力尚能维持正常，所以无症状，高度远视眼的视力有不同程度的减退，而且容易出现疲劳症状。

The improvement of visual disorder and incidence of pituitary hypofunction were compared between two groups.

开颅手术10例，其中视力完全恢复3例，明显恢复3例，略恢复2例，视力障碍加重2例；8例术后发生垂体功能低下，其中5例需长期激素替代治疗。

Intrastromal corneal ring segments (Intacs; Addition Technology Inc., Fremont, California) were designed to achieve a refractive adjustment by flattening the central corneal curvature while maintaining clarity in the central optical zone.

角膜基质环植入术（Intacs，Addition Technology Inc。， Fremont，加州）」的设计是利用拉平角膜中央的弧度，来维持角膜中央视力清晰，达到调整折射、改善视力的目的。

RESULTS: Among 200 cases operations, 7 cases posterior capsular rupture, 2 cases rupture of the iridodialysis, 52 cases corneal endothelial edema after 1 day, 11 cases hyphema., 3 cases IOL dislocation, 2 cases incision leakage.

结果：200例术眼中，后囊膜破裂7例，虹膜根部离断2例，术后1d角膜内皮水肿52例，前房积血11例，人工晶状体偏位3例，切口渗漏2例，术后1mo，视力均＞0.2，术后6～18mo视力≥0.5的181例，占90.5%，平均散光（0.97±0.52）D。

Operative effect and complications of intraoperative and postoperative were observed.RESULTS: Among 200 cases operations, 7 cases posterior capsular rupture, 2 cases rupture of the iridodialysis, 52 cases corneal endothelial edema after 1 day, 11 cases hyphema., 3 cases IOL dislocation, 2 cases incision leakage.

结果：200例术眼中，后囊膜破裂7例，虹膜根部离断2例，术后1d角膜内皮水肿52例，前房积血11例，人工晶状体偏位3例，切口渗漏2例，术后1mo，视力均＞0.2，术后6～18mo视力≥0.5的181例，占90.5%，平均散光（0.97±0.52）D。

PURPOSE: To investigate mesopic contrast sensitivity and night driving ability in eyes undergoing overnight orthokeratology, and to analyze the relationship among mesopic contrast sensitivity, ocular higher-order aberrations, and myopic correction.

目的：研究夜戴型角膜塑型术后的中间视力对比敏感度和夜间驾驶能力，分析中间视力对比敏感度、眼高阶像差和近视矫正之间的关系。

30 eyes of superficial corneal diseases including corneal dystrophy 12 eyes,scar after infection 7 eyes, dimmer nummular keratitis 6 eyes,scar after trauma 3 eyes and band degeneration 2 eyes were treated with PTK, and examined the uncorrected visual acuity,best corrected visual acuity and refraction respectively at one week,one month,three months and six months after PTK.The analysis of variance and chi-square test were used.

对角膜浅层病变30眼，包括角膜营养不良12眼，感染后角膜瘢痕7眼，钱币状角膜炎6眼，外伤性角膜瘢痕3眼和角膜带状变性2眼行PTK治疗，于术后1周、1、3、6月分别检查裸眼视力、最佳矫正视力和屈光状态等并回顾分析其疗效。

METHODS:The data of 306 patients (612 eyes) were measured with ultrasonic pachymeter, noncontact tonometry, automatic refractor, A scan ultrasonography and corneal topography, and the patients were analyzed on age, sex, race, occupation, address, family history of myopia, history of corneal contact lenses, left or right eye, naked vision and corrected vision.

近视眼306例612眼用超声角膜测厚仪、电脑验光仪、非接触眼压计、A超和角膜地形图分别测量其数据。并分析其年龄、性别、民族、职业、住址、近视家族史、配戴角膜接触镜史、眼别、裸眼视力、矫正视力。

Three of the four patients with papillitis and four of the six patients with normal optic disc examinations regained good vision.

四个视神经乳头浮肿的病人中，有三位有好的视力恢复；而六个视神经乳头正常的病人中，有四位有好的视力恢复。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。