AIM:To explore the changes of intraocular pressure measured by noncontact tonometer (IOPNCT) with high myopia and analyze the relative fators after small incision lenticule extraction(SMILE).METHODS:A retrospective study.Totally 108 cases (216 eyes) with high myopia received SMILE during March 2015 to October 2016 were involved.The IOPNCT, corneal central thickness (CCT) and corneal curvature for 3mo were recorded and analyzed by ANOVA, LSD t test.The Pearson correlation analysis and multiple linear regression model analysis were used to evaluate the relationship between IOPNCT and its influence factors.RESULTS:(1) There was significant statistical difference in IOPNCT after SMILE at 1d, 1wk, 1 and 3mo compare with preoperative (t=17.785, P=0.019;t=17.981, P=0.016;t=18.841, P=0.012;t=19.364, P=0.001);the IOPNCT after SMILE decreased.The IOPNCT values at every time after SMILE was no statistical difference (t=1.871, P=0.818;t=3.062, P=0.328;t=1.143, P=0.373).(2) The IOPNCT in high myopia were positive correlated with CCT and corneal curvature after SMILE (r=0.4356, 0.295;P<0.05), respectively.(3) The multiple linear regression model analysis revealed that Y=-14.601+0.348X1+0.03X2 (Y was IOPNCT, X1 was corneal curvature, X2 was CCT,P<0.001);Y=3.679+0.28X1+0.012X2 (Y was△IOPNCT,X1 was variation of corneal curvature,X2 was△CCT, P<0.001).CONCLUSION:The IOPNCT decreased after SMILE in high myipia, and it showed that there was no significant influence to use glucocorticoid eye drops in short terms.There was positive correlation among IOPNCT, CCT and corneal curvature after SMILE.

AIM:To analyze the recovery of visual cortex activation range of color vision in anisometropia amblyopia children after treatment by using blood oxygen level dependence-functional magnetic resonance imaging ( BOLD- fMRI ) and SPM8 software.
METHODS:Self-control study. This fMRI study directly compared activity in visual cortex produced by color monocular stimulation in 13 monocular anisometropia amblyopia children. The project of study was blocked design. The data of functions and anatomical MRI was stimulated by three-primary colors and was preprocessed and analyzed by SPM8 that based on MATLAB software. According to the data, we compared the change of the central area of color vision when first visit and 1, 2 ,4wk after treatment.
RESULTS: The BA17, BA18, BA19 and BA37 of amblyopia children were different activated after they accepted the three-primary colors stimulation (P<0. 01). After 4wk treatment, amblyopia children accepted red stimulation, the visual cortex activation range without expanding; after accepting green stimulus, on the left side of the visual cortex BA37, BA19, BA20, the average t value were 3. 5210, 3. 2716, 3. 1534 ( P< 0. 01 ); after accepting blue stimulation, the scope of the right side of visual cortex at BA19, BA18 were expanded to different extent, the average t value were 3. 7345, 3. 2701 (P<0. 01).
CONCLUSION: After 4wk treatment, visual cortex activation of color vision of anisometropia amblyopic children is expanded, but with low extent, after the short-term treatment of amblyopia, visual cortex activation of color vision has a certain degree of recovery but not obvious.

Red cell immunologic adherent function and Se quantity were measured in 48 normal children of Keshan disease area and the reaction of red cell C3bR to these children. The results showed that the Se quantity and the rosette formation rate of red cell C3bR of normal children in Keshan disease area were significantly lower than that in the control(P0.05).

Objective To investigate the mechanism and effect of TMP on melanocytes.Methods MTT method, NaOH-assay and Takahashi method were employed to measure the proliferation, melanin synthesis, tyrosinase activity of melanocytes. Results TMP induced a mild effect on melanocytic proliferation ( p

?The small incision lenticule extraction ( SMILE ) with femtosecond laser is a new mode of corneal refractive surgeryrecently. The safety, efficacy, stability and predictability of SMILE lead the corneal refractive surgery to a new world that only use femtosecond laser to correct myopia.With the development and popularity of SMILE, the clinical effect has aroused much concern.But there remain exited disputes in refractive stability, visual quality and corneal biomechanical property, contrast sensitivity and glare symptoms, corneal sensitivity and dye eye, corneal endothelial cells and intraocular pressure.These will be summarized in this review.

Objective To investigate the bid gene expression and cell death in brain after cerebral hypoxia-ischemia in neonatal rats and the effects of dexamethasone(DEX)on bid gene expression,so as to elucidate the possible mechanism of the neuroprotective effect of DEX pretreatment on rats following cerebral hypoxia-ischemia.Methods Twenty-four SD neonatal rats were divided randomly into hypoxia-ischemia brain damage(HIBD),normal,dexamethasone-pretreated and 9 g/L NaCl(NS)control group.The animal models of HIBD were made.Total RNA from ipsilateral cerebral hemisphere was extracted.Reverse transcription polymerase chain reaction(RT-PCR)was used to evaluate the level of bid gene expression after hypoxia-ischemia.Cerebral apoptosis was determined by terminal-deoxynucleotidy transferase mediated d-UTP nick end labeling(TUNEL).Results The levels of bid mRNA were higher in HIBD rats than those in normal rats.The number of positive apoptosis cells significantly increased in HIBD group(P

Objective To explore the cellular inhibitor of apoptosis protein 1(cIAP1)gene expression and Caspase-3 activity in brain after cerebral hypoxia-ischemia in neonatal rats and the influence of dexamethasone(DEX)on cIAP1 gene expression and Caspase-3 activity,so as to elucidate the possible mechanism of the neuro-protective effect of DEX pretreatment on rats following cerebral hypoxia-ischemia.Methods Twenty-four SD neonatal rats were divided randomly into hypoxic-ischemic brain damage group(HIBD group),normal group(NS group),dexamethasone-pretreated group(DEX group)and 9 g/L NaCl control group(NS group).The animal models of HIBD were made.Total RNA from ipsilateral cerebral hemisphere was extracted.Reverse transcription polymerase chain reaction(RT-PCR)was used to evaluate the level of cIAP1 gene expression after hypoxia-ischemia.Caspase-3 relative activity of brain tissue was determined by colorimetric assay.Results The levels of cIAP1 mRNA were lower in HIBD group than those in NS group.Caspase-3 relative activity significantly increased in HIBD group(P

Carcinoma ; Combined Modality Therapy ; Humans ; Nasopharyngeal Neoplasms ; radiotherapy ; therapy

Objective The objective was to discussing the difference between the Pemberton osteotomy and Salter osteot?omy which performed in patients between the ages of 2 and 3 years who suffered from developmental dislocation of the hip (DDH). Methods A retrospective review of the results of operation treatment for DDH in 59 children (84 hips) from January 1998 to De?cember 2008 was conducted. There are 10 boys (14 hips) and 49 girls (70 hips). The age of the patients was between 2-3 years old at the time of treatment 2.5±0.4 years. Surgery consist of open reduction of the hip, capsulorraphy, shortening and derotational oste?otomy of proximal femur, and innominate osteotomy which include Pemberton osteotomy (33 hips), Salter osteotomy (51 hips). McKay and Severin modified criteria were used to assess the function and radiographic results of the hip. Results The average follow?up time was 5.6±3.5 years ranging from 2 to 16 years. According to Severin criteria at final follow?up, 78 hips (93%) had ex?cellent and good results;4 hips were fair and 2 hips poor result. The radiology results in Salter osteotomy were better than Pember?ton osteotomy (rate of excellent and good results 100%vs. 82%,χ2=7.43, P=0.003). According to the McKay criteria Salter osteoto?my and Pemberton osteotomy have no significant difference in latest follow?up (the satisfactory rate 100%vs. 97%,χ2=1.56, P=0.39). 18 hips (21%) had proximal femoral growth disturbance which 10 hips in Pemberton group, 8 hips in Salter group. There is no significant difference (χ2=2.54, P=0.17). Conclusion Open reduction, innominate osteotomy and proximal femoral osteotomy were effective procedures for the treatment of DDH in children between 2-3 years old. More attention should be taken in Pember?ton osteotomy to prevent the acetabular bony edge absorption.

Objective To study the changes of iodine source and the nutritional status of iodine after termination of iodized salt supply in the areas with different water iodine concentrations in Shanxi province,in order to provide scientific bases for developing strategies on control and prevention of iodine deficiency disorders,and to study the cut-off value of water iodine level where iodized salt supply should be stopped.Methods In 2010 in Shanxi province,6 villages with 100％ of non-iodized salt consumption rate were selected as the survey spots based on the iodine concentration in drinking water of 0-,50-,100-,150-,300-,≥500 μg/L.Villages'iodized salt supply was terminated thoroughly.In each village,20 children aged 8 to 10 were selected.At the same time,women of childbearing age 18 to 50 years old and adult men aged 18 to 60 were selected from the same families as the children.Diet surveys were conducted by the method of 3 days recall on all subjects.Drinking water samples,staple foods,supplementary foods and urinary samples of all subjects were collected and the iodine concentration was determined by arsenic-cerium catalytic spectrophotometry.Results ①In the villages of water iodine 25.9,70.6 μg/L,the medians urinary iodine of children,women and men were all ranged from 100 to 199 μg/L,which meant their iodine nutrition levels were appropriate.In the village of water iodine 109.0 μg/L,the medians urinary iodine of children,women and men were all ranged from 200 to 299 μg/L,which meant their iodine nutrition levels were more than appropriate.In the villages of water iodine 225.8,430.0,581.2 μg/L,the medians urinary iodine of children,women and men were all ≥ 300 μg/L,which meant their iodine nutrition levels were too high.②)In all the 6 villages,the intaking amount of iodine met and exceeded the standard recommended intake of dietary iodine by ICCIDD/UNICEF/WHO (8 to 10-year-old children ≥ 120 μg/d,women of childbearing age and adult men ≥ 150 μg/d).But in the village of water iodine 581.2 μg/L,the iodine intake was exceeded the daily maximum safe intake (children aged 8 to 10 ≤800 μg/d,women of childbearing age and adult man ≤ 1000 μg/d).③The amount of iodine ingestion from drinking water was increased with the water content of iodine.When water iodine exceeded 100 μg/L,the amount of iodine ingestion from drinking water was higher than from food intaking,and became a main resource of iodine in the human body.Conclusions In the counties of iodine concentration in drinking water above 100 μg/L in high iodine areas of Shanxi province,the water iodine becomes the most important source of iodine,and iodine nutritional level is more than appropriate or possible excess.It is recommended that in areas of high water iodine of Shanxi province,the standard cut-point of water iodine value is set to 100 μg/L.