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Objective To evaluate the assistant effect ofintraoperative OCT (iOCT) in vitreous retinal surgery for macular disease.Methods A retrospective case study.A total of 71 patients (71 eyes) with macular disease who underwent vitrectomy in Eye Hospital of Wenzhou Medical University at Hangzhou from June 2015 to September 2016 were collected.There were 24 males (24 eyes) and 47 females (47 eyes),aged from 25 to 78 years,with the mean age of 63.35± 10.01 years.Among 71 eyes,there were 26 eyes with idiopathic macular hole,42 eyes with idiopathic epiretinal membrane,3 eyes with vitreomacular traction syndrome.The examination of iOCT was performed on the patients during 23G minimally invasive vitreoretinal surgery combined with internal limiting membrane peeling.Use observational method to compare the difference between result of iOCT and observation under the microscope,record the change of treatment strategy.Results Eight eyes (11.27％) iOCT results were different from the surgeon's observation,which including 5 eyes (62.50％) with idiopathic macular hole,2 eyes (25.00％) with idiopathic epiretinal membrane,1 eye (12.50％) with vitreomacular traction syndrome.The treatment strategy was changed in 8 eyes (11.27％) based on iOCT result,which including 5 eyes (62.50％) with idiopathic macular hole,2 eyes (25.00％) with idiopathic epiretinal membrane,1 eye (12.50％) with vitreomacular traction syndrome.Conclusions iOCT can help the surgeon find some subtle morphological changes which can hardly be seen by eyes.The surgeon can change and optimize the treatment strategy based on the result of iOCT.
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Increasing e-waste has become a major problem for global environment and public health. In the process of dismantling and recycling of disordered electronic waste, heavy metals such as lead and brominated flame retardants and organic substances are released into environmental media such as air, soil, dust and water, which is harmful to the health of local residents. Taking an e-waste dismantling area in Guangdong Province as an example, this paper reviews exposure levels of heavy metals and organic matters in e-waste recycling areas in China, as well as the health effects of local residents. Previous studies have found that e-waste recycling activities led to serious environmental pollution and high exposure levels of heavy metals and organic matters in local residents, which has a certain impact on the physiological functions of various human systems. The establishment of a centralized dismantling zone can effectively reduce the load level of various pollutants.
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Objective To observe the preliminary application of intraoperative optical coherence tomography (iOCT) in vitreous retinal surgery and the influencing factors of the imaging quality.Methods A retrospective case study.A total of 132 subjects were chosen in June 2015 and April 2016 in our hospital.All the subjects were taken vitreous retinal surgery and iOCT scanning.The patients included 46 males and 86 females,with an average age of 61.7 years.111 cases had macular diseases and 21 cases had vitreous hemorrhage.Cases are divided into high myopia and non high myopia group according to ocular axial length (AL),28 eyes in high myopia group (AL≥26 mm),104 eyes in non-high myopia (AL＜26 mm).The scanning time,image quality and eye conditions were observed during the operation.The discordance between surgeon microscope visualization of the pathology and the findings of the iOCT and the postoperative adverse reactions were also observed.Results The iOCT images were identified in 124 of 132 subjects,while were not identified in 8 eyes.For the macular area morphology change,iOCT tips and surgeon judgment rate was inconsistent in 22 eyes (16.7％).For the operation guidance value,change the operation rate of 12/132,accounted for 9.1％.The iOCT imaging quality of high myopia groups was lower than the non-high myopia groups (x2-17.13,P=0.001).Corneal edema and operation time were considered as influencing factors on the quality of the imaging in the non-high myopia groups (r =3.75,6.18;P 0.049,0.013).There were no complications such as endophthalmitis.Conclusions The surgeon can observe morphological changes in the macular area through iOCT which is difficult to be observed by operating microscope and selected reasonable operation method during the surgery.High myopia,corneal edema and operation time affect the image quality.
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The lumbar part of the sympathetic trunk in 206 sides of cadavers was observed. The results were outlined as follows:1. The average length of the lumbar sympathetic trunk in the adults is 17.58?4.51 cm on the left side and 16.60?5.14 cm on the right side respectively.2. In most cases (40.29?3.42%), there are 4 lumbar sympathetic ganglia on each side. They may fuse with each other between themselves, or the 1st lumbar ganglion fuses with the lowest thoracic ganglion (12.60?2.31%), or the lowest lumbar ganglion fuses with the 1st sacral ganglion (6.31?1.69%).3. The lumbar sympathetic ganglion gives off ramus communicans connecting the corresponding spinal nerve. The number of the ramus communicans of each ganglion varies from 0 to 6, but in most cases, 2～3, and decreases from above downwards along the trunk. There are frequently two or more rami in the upper lumbar ganglia, but only one in the lower ganglia.4. The number and sites of the lumbar ganglia on both sides of an individual are rarely symmetric (1.98?1.37%). One of these ganglia is situated constantly near the brim of pelvis or the common iliac artery, and accordingly it can be found easily.Most of the lumbar arteries are situated deep to the lumbar sympathetic trunk, only in a few cases, they are situated superficially, and all of them occur on the left side. In 25.75?3.05%, the lumbar veins are likewise located superficially. This can be found in any pair of the veins, but frequently at 3rd or 4th ones.The observation may be helpful to surgical operation.
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The intertubercular grooves of 212 humerus were studied. The statistical results showed that the depth of intertubercular grooves is highly correlated with the slope of the medial wall of the groove (r=0.116, p=0.05, lineal regression: =50.01+9.04x). It means that the deeper the groove the bigger the slope of the medial wall is, and the shallower the smaller. Their functional relationship has practical significance. The normal surface contour of the intertubercular groove is the important condition that keeps the long head tendon working normally. Therefore internal or external causes, e. g. fracture of the surgical neck, hyperplasia of the bone in aged people, may alter the normal anatomical relation of the intertubercular groove, which precipitated to tendosynovitis of the biceps. By observation of the compactness of the surgical neck cortex in three different levels, we found that it is in a transitional zone of from thin to thick, which agrees with the explanation of why fracture occurs frequently at the surgical neck.