间歇性外斜视斜视角与辐辏参数相关性研究

目的 分析间歇性外斜视斜视角与辐辏各因素的关系,探讨间歇性外斜视斜视角与辐辏参数的相关性.方法 对48例不同程度的间歇性外斜视患者根据斜视角的大小分三组,分别进行斜视角、正负融合范围、正负聚散幅度、辐辏近点、调节性辐辏与调节的比值检查,将各项检查结果与间歇性外斜视斜视角进行相关性统计学分析.结果 48例间歇性外斜视5 m远距离斜视角的平均值为(-13.19±8.40)△,33 cm近距离平均值(-18.79±6.80)△.正融合范围平均值7.29±4.73,负融合范围平均值:-4.28±4.55.辐辏近点平均值:破裂点7.50±2.43,恢复点8.74±2.84.远正相对聚散幅度平均值:模糊点12.34±6.90,破裂点18.48±7.63,恢复点10.76±7.19;远负相对聚散幅度平均值:模糊点14.30±6.22,破裂点21.52±6.94,恢复点8.34±7.92.近正相对聚散幅度平均值:模糊点18.03±8.16,破裂点28.13±7.85,恢复点20.25±18.70;近负相对聚散幅度平均值:模糊点14.21±7.04,破裂点21.55±6.96,恢复点8.06±7.99.调节性辐辏与调节的比值平均值:1.89±1.03.负融合功能和负相对聚散幅度与间歇性外斜视斜视角差异有统计学意义(P＜0.01).结论 间歇性外斜视斜视角与负融合功能和负相对聚散幅度有显著相关性,正融合功能范围、正相对聚散幅度、辐辏近点、调节性辐辏与调节的比值与间歇性外斜视斜视角差异无统计学意义.     

Asthenopia as the presenting symptom in advance allergic fungal sinusitis

A 14-year-old male presented to the ophthalmology clinic with a history of asthenopia. Laboratory, radiological and histopathological studies confirmed the diagnosis of allergic fungal sinusitis resulting in lateral displacement of the medial rectus muscles. Symptoms improved and near point of convergence recovered after surgical endoscopic decompression of the ethmoidal and maxillary sinuses.     

A comparison of mount of preparation and finish lines used by dental students in Damascus University and Al Baath University using (CAD/CAM) scanner

IntroductionFixed prosthodontics is considered one of the most vital dental treatments that patients receive. Sometimes, however, complication is encountered along with limited information regarding the quality and precision of preparation. Which that led to the conception of this study in order to highlight the shortcomings and obstacles in an attempt to avoid them. This study aims to evaluate the quality of preparation by students of the faculty of dentistry in Damascus University and Al-Baath University by assessing the finish lines.Materials and methodsThe specimen of this study consists of 244 prepared abutments divided into two groups: the first group consists of 122 clinically prepared abutments conducted by fifth year students in Damascus University. The second group consists of 122 clinically prepared abutments conducted by fifth year students in Al-Baath University. The specimen also consists of gypsum casts containing replicas of the clinically prepared teeth in addition to the primary casts. All casts – primary casts and post preparation casts – were collected and 3D scans were conducted to each abutment – before and after preparation – and a 3D image was acquired. Statistical analysis was conducted using SPSS v.26 (IBM, USA) with a P-Value of 0.05.ResultsThe preparation with a simple finishing line at Al-Baath University was 103% greater than it with a statistically significant difference at 56% at Damascus University, by 38%, and the percentage of preparation with a semi-shoulder finish line at Al-Baath University was 5% and at Damascus University was 3% without there being a statistically significant difference Between the two universities, the percentage of preparation with a shoulder finish line in Al-Baath University 14% was lower by a statistically significant difference than in Damascus University 63% by 40% (P < 0.001).ConclusionThe percentage of preparation with a simple finishing line at Al-Baath University was 103% greater than it with a statistically significant difference at 56% at Damascus University, by 38%, and the percentage of preparation with a semi-shoulder finish line at Al-Baath University was 5% and at Damascus University was 3%.     

Problems of integrated palliative care: a Dutch case study of routines and cooperation in the region of Arnhem

Cooperation in networks of providers of palliative care in Europe is problematic. Based on the concept of routines (patterns of behavior) and data about a Dutch network, we developed an explanation of this problem, in order to better understand the conditions for cooperation. Although more research is needed, the study suggests that disparate matches (divergence) between routines of the network members hampers cooperation. To promote cooperation, divergence, and legislation that stabilizes existing routines, must be identified. Divergence must be overcome and negotiations and transformational leadership, which require power sources, may be useful for this.     

琼脂印模材料对不同聚合度铸造桩适合性的影响

目的探讨琼脂印模材料对不同聚合度铸造桩适合性的影响。方法黄铜模拟标准尺寸的上中切牙牙根10个,依根管聚合度0°和6°分为两组。用琼脂印模材料制取根管印模,灌注模型,模拟临床制作铸造桩,玻璃离子水门汀粘固后,从标准件外围定位沟处横向剖开,将横剖面置于扫描电镜下观察,以粘固剂厚度为观察指标,进行测量。结果聚合度0°组的粘固剂厚度平均值为35．22±3．05um,聚合度6°组的粘固剂厚度平均值为29．09±5．52um,两者之间有统计学差异（P〈0．05）。结论用琼脂印模材料制取根管印模时,聚合度6°组的标准件铸造桩适合性优于聚合度0°组。     

对小度数集合不足型间歇性外斜视手术疗效分析

目的 探讨单纯单眼内直肌截除术和2.5～3.0mm单眼外直肌后徙+单眼内直肌截除术对视近时斜视度在15△～25△之间的小度数集合不足型间歇性外斜视的手术疗效.方法 对10例患者行2.5～3.0mm单眼外直肌后徙+单眼内直肌截除术(A组),15例患者行单纯单眼内直肌截除术(B组),术后分别比较两组患者视远和视近的斜视度以及视远和视近的斜视度的差值,并比较两组患者术后的正位率、恢复双眼视例数和恢复近立体视例数.术后随访6至12个月.结果 两组术前和术后视远和视近的斜视度以及视远和视近的斜视度的差值比较经t检验差异均有统计学意义(t=1.73～9.73,P＜0.05),A、B两组术后正位率、术后恢复双眼视的例数和恢复立体视例数经x2检验差异具有统计学意义(x2=3.84～5.11,P＜0.05).结论 (1)2.5～3.0mm单眼外直肌后徙+内直肌截除术和单纯单眼内直肌截除术治疗视近时斜视度15△～25△的小度数集合不足型间歇性外斜视均有效.(2)在缩小视近和视远斜视度的差值、术后正位率、恢复双眼视和立体视功能方面,2.5～3.0mm单眼外直肌后徙+内直肌截除术优于单纯单眼内直肌截除术.

Abstract：

Objective To evaluate the surgical results of unilateral medial rectus muscle resection and 2.5mm-3.0mm unilateral lateral muscle recession with unilateral medial rectus muscle resection for the intermittent exotropia of the convergence insufficiency type with small-diopter exodeviation of 15 △ to 25 △ at near.Methods Ten cases received 2.5mm-3.0mm unilateral lateral muscle resection with unilateral medial rectus muscle resection (group A),15 cases received unilateral medial rectus muscle resection (group B).The distance and near deviations and differences in the deviations were compared separately for the two groups;besides,the positioning rates,number of patients with restoration of binocular and stereoscopic visions were compared in the two groups after surgery.They were followed-up for 6 to 12 months after surgery.Results There was statistically significant difference (t =1.73-9.73,P ＜0.05) in the angle at near and distance,the angle near-distance difference.There also was statistically significant difference (x2=3.84-5.11,P ＜0.05) in the orthophoria rate,biocular vision recovery,stereopsis recovery after operation were compared between group A and B.Conclusions Both of the unilateral medial rectus muscle resection and 2.5mm-3.0mm unilateral lateral muscle recession with unilateral medial rectus muscle resection are an effect surgical treatment for the intermittent exotropia of the convergence insufficiency type with small-diopter exodeviation of 15△ to 25△ at near.2.5mm-3.0mm unilateral lateral muscle recession with unilateral medial rectus muscle resection is superior to unilateral medial rectus muscle resection in reducing the angle difference of near-diatance,orthophoria rate,biocular vision recovery,stereopsis recovery.     

数字化训练系统对集合不足型视疲劳的疗效观察

目的 观察数字化训练系统对集合功能不足型视疲劳的疗效。方法 18位集合不足型视疲劳患者随机分2组,分别采用数字化训练系统和笔尖训练法进行12周的视觉训练,训练前后均进行CISS集合不足型视疲劳问卷评分并检测辐辏近点和正融像辐辏功能。比较两种方法对集合功能不足性视疲劳的治疗效果。结果 两种训练方法对治疗集合不足性视疲劳后辐辏近点均明显变近,正融像辐辏能力均明显加强,数字化训练法治疗效果较笔尖训练法效果更为明显。数字化训练组CISS评分视疲劳症状明显改善,而笔尖训练组症状改善不明显。结论 不论主观评价还是集合功能检测,数字化训练的治疗集合不足性视疲劳均较笔尖训练法更有效。     

Effectiveness of home-based pencil push-ups (HBPP) for patients with symptomatic convergence insufficiency

Purpose

To report the effectiveness of home-based pencil push-ups (HBPP) therapy for patients with symptomatic convergence insufficiency.

Methods

Data was collected prospectively on 16 patients who were diagnosed with convergence insufficiency beginning in January 2009. The study group was composed of ten male and six female patients. The duration of symptoms, refractive error, distant and near deviation angles, and near point of convergence (NPC) prior to and after 12 weeks of HBPP therapy were measured in all patients.

Results

The mean age of the patients was 19.3 years. The mean deviation angle of exophoria was 3 prism diopters (PD) at distant and 11.2 PD at near. The mean value of NPC prior to HBPP therapy was 36.3 cm; however, the near point of accommodation was within the normal range. After 12 weeks of HBPP therapy, the mean deviation angle of exophoria decreased to orthophoric at distant and 4 PD at near. The mean value of NPC decreased to 14.4 cm.

Conclusions

Twelve weeks of HBPP therapy appears to be an easy, cost-free and effective therapy for patients with symptomatic convergence insufficiency.     

百草枯中毒患者院前院内治疗13例分析

目的：探讨通过急救网络协作调动网络功能,加强院前院内衔接对百草枯中毒患者抢救的效果。方法：从120调度员接电话指导百草枯中毒患者家属的自救、当地卫生院的急救以及医务人员院前急救、医院急诊室到重病室的高度密切配合、紧密衔接、综合治疗对13例百草枯中毒患者的抢救模式。结果：13例患者中存活7例,死亡6例,成功率为53.8%,死亡率为46.2%。结论：通过急救网络协作充分调动120急救网络的功能,加强院前院内的衔接,能够明显提高百草枯中毒患者的抢救成功率。     

Influence of prelimbic and sensorimotor cortices on striatal neurons in the rat: electrophysiological evidence for converging inputs and the effects of 6-OHDA-induced degeneration of the substantia nigra

These studies were designed to investigate whether there are convergent prelimbic and sensorimotor cortical inputs onto striatal neurons in the rat and whether dopaminergic (DA) nigrostriatal fibers regulate these inputs. The influence of the nigrostriatal DA system was assessed in rats with either small or large 6-hydroxydopamine-induced lesions of the substantia nigra. In normal rats 39 out of 74 neurons (52.7%) were excited by stimulation of both the prelimbic and the sensorimotor cortex. No marked change in corticostriatal transmission was evident in rats with small 6-OHDA-induced lesions (defined as 10–35% decrease in [³H]DA uptake in striatal synaptosomes). In rats with large lesions (75–85% decrease in striatal [³H]DA uptake), however, a complete rearrangement of the corticostriatal transmission occurred. This was evident in a decrease of thresholds to obtain cortical responses, by modifications of the discharge properties of striatal neurons receiving input from cortices and by an increase in the number of neurons responding to cortical stimulation. In addition, a significantly higher percentage of striatal neurons responded to stimulation of both prelimbic and sensorimotor cortices in rats with large lesions than in rats with small lesions or in control rats. This data suggests that: (1) no functional separation of prelimbic and sensorimotor cortical inputs occurs in the rat striatum, (2) the nigrostriatal DA system exerts a focusing effect on these inputs, (3) the striatum is actively involved in the integrative processing of descending cortical information.