Ⅱ期人工晶状体(intraocular lens,IOL)植入常用于矫正先天性白内障摘除术后无晶状体眼状态。IOL屈光力计算是影响儿童Ⅱ期IOL植入术后视功能发育和改善的关键因素之一。现有IOL屈光力计算公式是基于成人有晶状体眼的数据研发，能准确预测成人眼IOL植入的屈光力，但是对儿童Ⅱ期IOL植入的屈光力预测准确性欠佳，主要原因包括：1)儿童II期植入术前为无晶状体眼，缺乏部分公式定义中的有晶状体眼的前房深度(是指从角膜前表面中央顶点到晶状体前表面的距离)和晶状体厚度。2)公式根据囊袋内植入IOL预测屈光力，但儿童Ⅱ期IOL睫状沟植入术在临床上应用更为广泛。当IOL植入睫状沟时有效晶状体位置发生前移，可能引起屈光预测误差。3)成人眼的发育已完成，目标屈光度多为正视或近视眼(-3.00 ~ +1.00 D)，但是儿童眼仍在发育，需针对其特性测算合适的远视目标屈光度(+0.50 ~ +12.00 D)以适应眼球发育引起的屈光变化。为使Ⅱ期IOL植入患儿达到术前预设的目标屈光度，对现有公式进行选择与优化至关重要。
Secondary intraocular lens (IOL) implantation is a common treatment for pediatric aphakia. The accurate prediction of IOL power calculation plays a pivotal role in the postoperative development and improvement of visual function for pediatric secondary IOL implantation. Current IOL power calculation formulas were developed based on data from adult phakic eyes and displayed good performance in adult population. However, the formulas showed poor performance in pediatric aphakic population due to the following reasons: 1) In these pediatric aphakic patients, the unavailability of phakic anterior chamber depth (the distance from corneal epithelium to the anterior surface of the lens) and lens thickness (LT) greatly limits the application of some IOL power calculation formulas. 2) IOL power calculation formulas predict the effective lens position on the basis of in-the-bag IOL implantation, whereas sulcus implantation is more widely used in pediatric secondary implantation. Effective lens position in capsular placement is more posterior to ciliary sulcus IOL placement. When applying the initial IOL power calculated for capsular implantation to sulcus implantation, it can lead to refractive errors. 3) Adult eyes have completed their development, with target refractions often being emmetropic or myopic (-3.00 ~ +1.00 D), while pediatric eyes are still developing, necessitating the calculation of an appropriate hyperopic (+0.50 ~ +12.00 D) target refraction to accommodate refractive changes due to ocular growth.To achieve the predetermined target refractive outcomes, the selection and optimization of IOL power calculation formulas is critically important for pediatric secondary IOL implantation.
目的：评估白内障人工智能辅助诊断系统在社区筛查中的应用效果。方法：采用前瞻性观察性研究方法对白内障人工辅助诊断系统的应用效果进行分析，结合远程医疗的模式，由社区卫生人员对居民进行病史采集、视力检查和裂隙灯眼前节检查等，将数据上传至云平台，由白内障人工智能辅助诊断系统和人类医生依次进行白内障评估。结果：受检人群中男性所占比例为35.7%，年龄中位数为66岁，裂隙灯眼前节照片有98.7%的图像质量合格。该白内障人工智能辅助诊断系统在外部验证集中检出重度白内障的曲线下面积为0.915。在人类医生建议转诊的病例中，有80.3%也由人工智能系统给出了相同的建议。结论：该白内障人工智能辅助诊断系统在白内障社区筛查的应用中具有较好的可行性和准确性，为开展社区筛查疾病提供了参考依据。
Objective: To evaluate the effectiveness of an artificial intelligence-assisted diagnostic system for cataract screening in community. Methods: A prospective observational study was carried out based on a telemedicine platform. Patient history, medical records and anterior ocular segment images were collected and transmitted from community healthcare centers to Zhongshan Ophthalmic Center for evaluation by both ophthalmologists and artificial intelligence-assisted cataract diagnostic system. Results: Of all enumerated subjects, 35.7% were male and the median age was 66 years old. Of all enumerated slit-lamp images, 98.7% met the requirement of acceptable quality. This artificial intelligence-assisted diagnostic system achieved an AUC of 0.915 for detection of severe cataracts in the external validation dataset. For subjects who were advised to be referred to tertiary hospitals by doctors, 80.3% of them received the same suggestion from this artificial intelligence-assisted diagnostic system.Conclusion: This artificial intelligence-assisted cataract diagnostic system showed high applicability and accuracy in community-based cataract screening and could be a potential model of care in community-based disease screening.
医学生在不久的将来需担起保障人民健康的重任，必须坚持正确政治方向，思想政治教育(思政教育)融入医学课程显得格外重要。眼科疾病与全身疾病息息相关，眼科学是临床医学生的一门必修课程。思政教育与眼科学专业课相融合可激励学生自觉把个人的理想追求融入国家和民族的事业中，勇做走在时代前列的奋进者、开拓者。中山大学中山眼科中心因材施教，针对临床医学专业本科生，通过生动的例子将“防盲治盲责任”“近视防控国家需求”等思政内容融入眼科学本科教学的各个章节中，旨在培养学生树立为服务人民、服务国家健康战略而努力学习的理想和价值观。课程结束后，采用问卷调查了解学生对思政教育与眼科学专业课融合的接受度、课程建议及效果评估，发现学生对眼科学课程中融入思政教育接受度较高，效果较好。
Medical students must adhere to the correct political direction because they need to protect people's health in the near future. It is particularly important to integrate ideological education into medical curriculum. Ophthalmic diseases are closely related to systemic diseases. Ophthalmology is a compulsory course of clinical medicine for medical college students. The integration of ideological education into ophthalmology professional courses can encourage students to integrate their personal ideals into national undertaking, motivate students to become strivers and pioneers in the new era. Zhongshan Ophthalmic Center, Sun Yat-sen University taught students according to their aptitude and integrated the ideological contents such as “prevention of blindness” and “myopia prevention” into each chapter of ophthalmology teaching through vivid examples for clinical medical undergraduates. It would be helpful for the students to establish the ideal and values of “serve the people”. At the end of the course, the medical students were investigated by questionnaires to evaluate the effect of ideological education integration, as well as the acceptance and suggestion from the students. The results showed that studentswere satisfied with the teaching quality of ideological contents and the curriculum integration has achieved the desired effect.
眼睛是人体最重要的感觉器官之一，主要由角膜和晶状体构成的屈光系统和视网膜构成的视觉神经系统2个部分构成。眼睛各组织的发育和功能异常都可影响视功能，甚至致盲。现有的致盲眼病的治疗方式均存在各自瓶颈问题，新的诊治方法亟待开发。近年来，得益于干细胞和组织工程学的发展，结合现有眼各组织的发育理论知识，研究者们利用多种来源的干细胞在体外成功诱导出具有组织特异结构和功能的眼类器官。眼类器官研究为利用干细胞研究眼组织发育和眼病发病机制、药物筛选以及替代治疗创造了新机遇，将干细胞治疗眼病的转化研究推向了一个更高平台。本文将对现有眼类器官的技术发展及应用进行综述。
Being one of the most important sensory organs, the eye is composed of the cornea, the lens, which are responsible for refraction, and the retina, which is the neural sensory part of the eye. Various kinds of developmental abnormalities and functional defects could lead to visual dysfunctions, and even blindness. Current treatments for blindness-causing eye diseases all have their own limitations, awaiting new efficient diagnostic and treating methods. Thanks to the development in stem cell biology and bioengineering, taking advantage of the rich knowledge accumulated on the mechanisms governing eye development, researchers have successfully generated various ocular organoids using multiple sources of stem cells in vitro, which resemble their counterparts in vivo on both the structural level and functional level. Ocular organoids provide valuable material and models for studying eye development, pathology, drug screening, and cell replacement therapy, pushing translational studies of ocular stem cell to a new era. Here, the paper reviews the development and application of ocular organoid technologies.
目的：了解思政元素融入临床医学八年制眼科学整合课程的学生满意度与教学效果。方法：对中山大学临床医学八年制的五年级医学生进行匿名纸质版问卷调查，评估学生对思政教育的满意度与教育效果。对问卷结果进行描述性统计分析，计数资料以频率与百分比的形式表示。结果：共回收有效问卷90份，91%的学生认同在课程中融入思政元素，93%的学生认为思政与课程的融合度为好或者非常好，82%的学生认为思政课程对激发眼科学兴趣有帮助。思政题目的总体正确率高达92.9%，正确率从高到低依次为：医患沟通(100%)、眼科历史(98.9%)、政策要点(83.3%)、研究前沿(82.2%)。结论：临床医学八年制学生对眼科学整合课程的思政元素融合的满意度高。思政教育获得良好效果，学生对思政知识的掌握度高。后续课程在保持学生对医患沟通以及学科历史兴趣的同时，还应加强对于研究前沿和政策要点的教育。
Objective: To investigate the student satisfaction and educational effect of integrating ideological and political elements into the eight-year clinical medicine ophthalmology integrated curriculum. Methods: An anonymous paper questionnaire survey was administered to fifth-grade clinical medicine students ofthe eight-year clinical medicine program of Sun Yat-sen University to assess students’ satisfaction with ideological and political education as well as the educational effectiveness. Descriptive statistical analysis was performed on thequestionnaire results, and the qualitative data were represented by frequency and percentage. Results: Ninety valid surveys were collected. 91% of the students agreed with the incorporation of ideological and political elements into the curriculum, 93% of the students thought the incorporation of ideological and political elements into the curriculum was good or very good, and 82% of the students believed that the ideological and political curricula helped arouse their interest in ophthalmology. The overall correct rate for ideological and political questions reached 92.9%, with the following correct rates from most accurate to least accurate: doctor-patient communication (100%), history of ophthalmology (98.9%), policy (83.3%), and research frontier (82.2%). Conclusion: Eight-year clinical medicine students are highly satisfied with the integration of intellectual and political components into the ophthalmology integration curriculum. Ideological and political education has yielded favorable results, with students demonstrating a thorough grasp of ideological and political facts. Future curricula should expand students’ awareness of research frontiers and policy issues while maintaining their interest in doctor-patient communication and the history of ophthalmology.
