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眼科学报 1997年第3期13卷 164-166,161页

作者： george c woo Brian Brown University of Waterloo WaterlooHong Kong Polytechnic University CanadaHong Kong

Objective: To investigates the clinical application value of hyperacuity test for evaluating vision through dense ***: Ten normal subjects (20 years) were tested both with Bailey-Lovie type chart and three points vernier acuity test (one of the hyperacuity test) ; and retinometer test were performed preoperatively and postoperatively in 30 patients (31 eyes) with senile cataract. These patients' lens opacity was classified with LOGS III ***: The correlation of vernier acuity and visual acuity of normal subjects is significant. The result of difference compression of pre-surgical and post-surgical vernier acuity of 30 cataract patients is not significant. The correlation of retinometer findings with post-surgical visual acuity shows not statistically significant. Our result shows that there is good correlation between vernier acuity and post-surgical visual ***: It appears that hyperacuity is a good test for foveal function behind dense cataract and other ocular

关键词：听觉过敏视网膜病白内障视力评估

Subjective refractions determined by Dyop® and LogMAR chart as fixation targets

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Annals of Eye Science 2022年第4期7卷 19-26页

作者： Rita W.Sum george c.woo School of Optometry The Hong Kong Polytechnic UniversityHong KongChina

Background:Dyop®is a dynamic optotype with a rotating and segmented visual *** can be used for visual acuity and refractive error *** objective of the study was to compare refractive error measurement using the Dyop®acuity and LogMAR E ***:Fifty subjects aged 18 or above with aided visual acuity better than 6/12 were *** error was measured by subjective refraction methods using the Dyop®acuity chart and LogMAR E charts and the duration of measurement ***’s notation was used to represent the refractive error obtained for ***:There was no significant difference in terms of spherical equivalent(M)(P=0.96)or J0(P=0.78)and J45(P=0.51)components measured using the Dyop®acuity and LogMAR E ***,subjective refraction measurement was significantly faster using the Dyop®acuity chart(t=4.46,Pconds using the LogMAR E ***:Accuracy of refractive error measurement using a Dyop®chart was comparable with use of a LogMAR E *** dynamic optotype Dyop®could be considered as an alternative fixation target to be used in subjective refraction.

关键词： Dyop dynamic optotype visual acuity subjective refraction

使用棱镜重新定位双侧中心暗点患者视网膜物像的预试验

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中华眼视光学与视觉科学杂志 2016年第10期18卷 613-618页

作者： Matt Valdes Stanley woo Joshua Pratt george c. woo 美国圣道大学卢森堡视光学院美国Marshall B.Ketchum大学南加州视光学院美国华盛顿州双子港眼科中心香港理工大学视光学院

目的本研究使用激光扫描检眼镜（SLO）评价双侧中央暗点患者使用棱镜后的眼球运动反应。方法本预试验共招募6例有双侧中央暗点的年龄相关性黄斑变性（AMD）患者以及6例正常视力的志愿者。首先用Nidek MP-1微视野仪确认患者的中央暗点和... 详细信息

目的本研究使用激光扫描检眼镜（SLO）评价双侧中央暗点患者使用棱镜后的眼球运动反应。方法本预试验共招募6例有双侧中央暗点的年龄相关性黄斑变性（AMD）患者以及6例正常视力的志愿者。首先用Nidek MP-1微视野仪确认患者的中央暗点和优选视网膜注视点（PRL），然后用Rodenstock SLO，在将视标投射在优选视网膜注视点时拍下实时视网膜像，接着在受检者眼前加入6-8PD的棱镜，要求受检者保持注视视标，这时通过视网膜标记来测量视网膜像的移位量，以及随后发生的优选视网膜注视点的再次注视。过程中平均移位量和再次注视时间通过图像软件（ImageJ software）来计算。结果实验组再次注视时的移位量在3个像素点或11．66个弧分之内（x轴：2．90±3．92，y轴：2．53±4．18）。对照组再次注视时的移位会准确些（x轴：0．33±1．15，Y轴：0．89±2．50），但与实验组差异无统计学意义（tx=1.32，Px〉0．05；tx=0.80，P3〉0．05）。对照组再次注视时间（0．98±0．19）s较实验组（2．83±1．63）s要短，差距有统计学意义（t=5．03，P〈0．01）。其中有1例实验组受检者没有发生再次注视，其结果被排除并单独分析。结论研究发现，双眼中央暗点患者对棱镜物像转移后的再注视反应与正常人接近，但实验组再注视明显较对照组慢，并有1例受检者没有发生再注视。该数据说明双侧中央暗点患者无论眼前有没有棱镜，都会利用相同的视网膜位置视物，因此，通过棱镜物像再定位的意义不大。

关键词：黄斑变性图像再定位棱镜棱镜扫描激光扫描检眼镜

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动态视标与LogMAR视力表测定视敏度的一致性比较

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中华实验眼科杂志 2021年第6期39卷 534-537页

作者：岑穎雯胡志城香港理工大学眼科视光学院眼视觉研究中心810005

目的研究动态视标(Dyop■)与LogMAR视力表检测视敏度的一致性。方法采用横断面研究方法,纳入2017年5—11月在香港理工大学视光学院视光门诊检查的健康受试者150人150眼,均取右眼进行观察,平均年龄(58.7±14.3)岁。所有受试者均分别接受... 详细信息

目的研究动态视标(Dyop■)与LogMAR视力表检测视敏度的一致性。方法采用横断面研究方法,纳入2017年5—11月在香港理工大学视光学院视光门诊检查的健康受试者150人150眼,均取右眼进行观察,平均年龄(58.7±14.3)岁。所有受试者均分别接受距离3 m的传统LogMAR E视力表和在距离6 m的监视器上Dyop■视力表的远视力测定,测定后受试者采用5分Likert量表对Dyop■视力测定速度和易度进行评分。对2种视力表视力测定结果的一致性进行评估。结果LogMAR E视力与Dyop■视力平均差值为(0.05±0.07)LogMAR,2种方法的95%一致性界限为-0.09~0.19。2种方法测定视力的组内相关系数为0.957。70%(105/150)的受试者认为Dyop■视力测定速度较快,81%(121/150)的受试者认为测定方法容易学习。结论Dyop■视力测定与传统LogMAR视力测定在临床上可以互相替代。

关键词：视敏度视标动态视力一致性

视觉障碍患者病因分析及不同类型助视器的应用评估

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中华实验眼科杂志 2019年第7期37卷 522-526页

作者：杜蓓林娜娜胡志城韩丁张红天津医科大学眼科医院天津医科大学眼视光学院天津医科大学眼科研究所天津市视网膜功能与疾病重点实验室天津300384 香港理工大学眼科视光学院香港810005

目的分析视觉障碍的主要病因,探讨视觉障碍患者在助视器辅助下的视力改善情况及存在的问题。方法采用系列病例观察研究方法,选取2012年1月~2016年12月在天津医科大学眼科医院就诊的视觉障碍患者797例进行病因分析、视觉评估和助视器验配... 详细信息

目的分析视觉障碍的主要病因,探讨视觉障碍患者在助视器辅助下的视力改善情况及存在的问题。方法采用系列病例观察研究方法,选取2012年1月~2016年12月在天津医科大学眼科医院就诊的视觉障碍患者797例进行病因分析、视觉评估和助视器验配。6个月年后随机选取400例患者进行随访,就助视器的应用效果、日均使用时间以及弃用原因等问题进行评估和分析。结果797例视觉障碍患者前三位的致病原因分别为高度近视、先天性眼病和糖尿病视网膜病变。在远用光学助视器的辅助下,患者的远视力水平能得到显著改善;66.30%的患者每日使用助视器的持续时间并不多,仅为偶尔使用;在使用效果评价中,助视器验配的总体有效率为86.92%,其中电子助视器有效率明显高于其他近用光学助视器,并且电子助视器的使用效果评价也是最好。在助视器弃用的研究中发现,视力差、使用不方便和不会使用是常见影响因素,其中视力差是主要原因。结论高度近视已成为导致视觉障碍的主要疾病;专业的助视器验配能够大大提升患者的残余视觉状态以及助视器应用的有效性。在应用过程中,大多数视觉障碍患者因眼部疾患的原因并不会长时间持久地使用助视器,但只要在特定情况下助视器能够满足患者的视觉需求,即可有效地发挥其作用。

关键词：视觉障碍低视力助视器评估

Hepatocellular carcinoma recurrence after liver transplant:An Australian single-centre study

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World Journal of Transplantation 2025年第1期15卷 105-114页

作者： Matthew G Garas Luis calzadilla-Bertot Briohny W Smith Luc Delriviere Byron Jaques Lingjun Mou Leon A Adams Gerry c MacQuillan george Garas Gary P Jeffrey Michael c Wallace Medical School University of Western AustraliaNedlands 6009Western AustraliaAustralia Department of Hepatology Sir Charles Gairdner HospitalNedlands 6009Western AustraliaAustralia Department of Surgery Sir Charles Gairdner HospitalNedlands 6009Western AustraliaAustralia

BAcKGROUND Hepatocellular carcinoma(Hcc)is a leading cause of cancer-related deaths *** transplantation(LT)offers the most effective *** recurrence is the strongest risk factor that decreases post-LT survival in patients transplanted for *** rate of Hcc recurrence is generally reported as 8%-20%in the *** predictors of Hcc have already been researched,however,to our knowledge there are no published studies on this topic using Australian *** To determine the rate and identify predictors of Hcc recurrence in a contemporary Western Australian LT *** We performed a retrospective cohort study of all liver transplants in patients with Hcc at Sir charles Gairdner Hospital between 2006 and *** was collected from various health record databases and included recipient demographics,serum biochemistry,radiology,operation notes,explant histopathology and details of *** survival of Hcc patients post-LT,stratified for recurrence,was calculated by Kaplan Meier *** and multivariate cox regression was used to determine predictors of Hcc recurrence *** Between 1/1/2006 and 12/31/2021,119 patients were transplanted with Hcc.8.4%of subjects developed recurrent Hcc after LT with median follow-up time of 5.4 *** median time to recurrence was 2.9 years±0.75 *** comparing baseline characteristics,a greater proportion of subjects with recurrence had common characteristics on explant histopathology,including>3 viable nodules(P=0.001),vascular invasion(P=0.003)and poorly differentiated Hcc(P=0.03).Unadjusted survival curves showed lower 1-year,3-year,5-year and 10-year survival rates in subjects with Hcc recurrence compared to those without Hcc recurrence(90%vs 92%,70%vs 88%,42%vs 80%,14%vs 76%,respectively;log rank PcONcLUSION Hcc recurrence was low at 8.4%in this contemporary Australian cohort,however it significantly impacted post-LT *** studies are requir

关键词： Liver cancer Recurrence Liver transplantation Hepatocellular carcinoma Predictors Post-transplant survival Australian data

Traveling wave effect on the seismic response of a steel arch bridge subjected to near fault ground motions

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Earthquake Engineering and Engineering Vibration 2007年第3期6卷 245-257页

作者：徐艳 george c Lee McEER University at BuffaloNY 14260 USA Department of Bridge EngineeringTongji UniversityShanghai 200092China McEER University at BuffaloNY 14260USA

In the 1990s, several major earthquakes occurred throughout the world, with a common observation that near fault ground motion （NFGM） characteristics had a distinct impact on causing damage to civil engineering structures that could not be predicted by using far field ground motions. Since then, seismic responses of structures under NFGMs have been extensively examined, with most of the studies focusing on structures with relatively short fundamental periods, where the traveling wave effect does not need to be considered. However, for long span bridges, especially arch bridges, the traveling wave （only time delay considered） effect may be very distinct and is therefore important. In this paper, the results from a case study on the seismic response of a steel arch bridge under selected NFGMs is presented by considering the traveling wave effect with variable apparent velocities. The effects of fling step and long period pulses of NFGMs on the seismic responses of the arch bridge are also discussed.

关键词： traveling wave effect arch bridge near fault ground motion fling step long period pulses

Biliary Mucinous cystadenoma: A Review of the Literature

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Journal of clinical and Translational Hepatology 2019年第2期7卷 149-153页

作者： Leon D.Averbukh David c.Wu woo cheal cho george Y.Wu Department of Medicine Division of Gastroenterology-HepatologyUniversity of Connecticut Health CenterFarmingtonCTUSA Department of Pathology Hartford HospitalHartfordCTUSA

Biliary mucinous cystadenomas are cystic neoplasms commonly mistaken for simple *** are rare and generally benign tumors,often incidentally found on imaging and during unrelated surgical *** tend to be slow growing though may reach symptomatic *** of biliary mucinous cystadenomas may have serious consequences secondary to their potential for malignant transformation into biliary mucinous ***,we review the epidemiology,etiology,pathology,diagnostic modalities,histology,and available treatment methods for mucinous cystadenomas reported in current literature.

关键词： Biliarymucinous cystadenoma Biliary mucinous cystadenocarcinoma cystic neoplasm

Time derivative of earthquake acceleration

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Earthquake Engineering and Engineering Vibration 2005年第1期4卷 1-16页

作者： george c. Lee Multidisciplinary center for Earthquake Engineering Research University at Buffalo Buffalo NY 14261-0025 USAProfessor

Unlike acceleration, velocity, and displacement, the time derivative ofacceleration (TDoA) of ground motion has not been extensively studied. In this paper, the basiccharacteristics of TDoA are evaluated based on records from the 1999 chi-chi, earthquake (Mw 7.6)and one of its aftershocks (Mw 6.2). It is found that the maximum TDoA at a free-field station wasover 31,200 cm/s3 (31.8 g/s); and the duration of 'strong' TDoA, between the first and the last timepoints exceeding 2,000 cm/s3 (2 g/s), was almost one minute near the epicenter area. Since groundTDoA sensors are not commonly available, the time series are calculated by direct numericaldifferentiation of acceleration time series. Relative error analysis shows that the error isnon-transitive and total error is within 4%. The density function of TDoA amplitude, frequencycontent and spatial distribution of peak ground jerk (PGJ) are evaluated. The study also includesexamination of some TDoA responses from a seven-story building and comparison of ground TDoA withthe limit TDoA used in the transportation industry for ride comfort. Some potential impacts of TDoAon humans have also been reviewed.

关键词： time derivation of acceleration peak ground jerk acceleration time series earthquake ground motion earthquake effect on human activities

Urban china in Transformation:Hybrid Economy,Juxtaposed Space,and New Testing Ground for Geographical Enquiries

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chinese Geographical Science 2011年第1期21卷 1-16页

作者： george c S LIN Department of Geography University of Hong Kong

History has brought us into a significant moment when the majority of the human kind has taken up resi-dence in urban settlements. The focus of global urbanization has shifted to the developing world and the center of manufacturing is no longer confined to the Global North. This paper provides a periodical assessment of the current status of china's urban transformation in the global context of a shifting emphasis of industrialization and urbaniza-tion. china's phenomenal urban transformation deserves a special attention not only because of its unparalleled scale and speed but also because of its distinct trajectory of growth that does not conform to normal theoretical ex-pectations. The results of assessment revealed an urban economy with remarkable hybridity, a society that is in-creasingly stratified, polarized, and segregated, and a juxtaposed urban space undergoing restless and pervasive transformation. A decentering world should entail a decentering knowledge production. A critical reflection upon the chinese patterns and processes of urban transformation has identified 4 main issues with great potentials for inno-vative knowledge production, namely: 1) privatization and economic development; 2) state, society, and space; 3) urbanization of capital, labor, and land; and 4) the environment and chinese political ecology. The paper closes with the remark that a rapidly transforming urban china has presented itself as a fertile and resourceful testing ground for critical and innovative geographic enquiries.

关键词： urban geography urbanization chinese cities political economy china