近视防控已经上升为国家战略，眼轴长度是近视防控的重要建档参数。眼轴长度的测量有多种方法，受到年龄、性别、脉络膜厚度等因素的影响。目前，眼轴长度的定义尚未统一，建议建立标准化的定义和方法学，以指导近视防控的临床和科研工作。

The prevention and control of myopia has become a national strategy, and the axial length is an important parameter in the documentation of myopia prevention and control. This review summarized the measurement technology and factors associated with axial length. Axial length can be measured in various ways and can be influenced by age, gender, choroidal thickness, and other factors. A standardized definition of axial length is warranted to be established for clinical and scientific purposes.

目的：运用Lea Symbols视力表、HOTV视力表对2.5~5.0岁正常儿童视力发育情况进行探究，并评价2种视力表的应用效果。方法：以随机顺序先后应用Lea Symbols视力表与HOTV视力表对广州地区2所早教中心及3所幼儿园共461例儿童(922只眼)进行单眼视力检查，所有儿童提前1 d行小瞳下检影验光、眼前节裂隙灯检查、眼底情况、眼球活动、眼位检查，筛选无器质性眼病、屈光度在正常范围的儿童作为研究对象。视力值采用5分记录方法表示。结果：1 )可测率(视力表使用配合程度)。407名儿童完成Lea Symbols视力检查，总体可测率92.08%；402名儿童完成HOTV视力检查，总体可测率90.95%；前者可测率高于后者，差异无统计学意义(χ² =0.417，P=0.580)。进一步研究发现2种视力的可测率随年龄增长不断提高，儿童3岁之后基本都能完成2种视力的检查。2)2种视力结果及比较(5分记录法表示)。Lea视力值：右眼为4.89±0.05，左眼为4.90±0.05；HOTV视力值：右眼为4.84±0.05，左眼为4.85±0.04；前者视力好于后者，差异有统计学意义(右眼：t=3.171，P=0.003；左眼：t=3.230，P=0.003)。3)视力发育与年龄的相关性。2种视力发育与年龄存在显著正相关(P<0.001)，即随着年龄的增长，视力水平逐渐提高。4)视力发育与眼别、性别的关系。左右眼之间的视力发育差异无统计学意义(P>0.05)；男性儿童的视力发育好于女性，且差异有统计学意义(P<0.05)。结论：Lea Symbols及HOTV视力表建议用于年龄大于3岁儿童的视力检查，且儿童更容易接受Lea Symbols视力表的检查。伴随年龄的增长，儿童的视力发育呈现提高的趋势；Lea视力优于HOTV视力。视力的发育与眼别无关，男性儿童的视力发育快于女性儿童。

Objective: To conduct a preliminary study of the Lea Symbols and HOTV charts to explore the visual development of children aged 2.5 to 5.0 years, and evaluate the application values of the two charts. Methods: A total of 461 children (922 eyes) in 2 early education centers and 3 kindergartens in Guangzhou were examined by using the Lea Symbols visual acuity chart and HOTV visual acuity chart in random order. All the children underwent low-pupil photometry, anterior section slit-lamp examination, retinal condition, eye movement, and eye position examination 1 day in advance. Children with no organic eye disease and normal diopter were selected as subjects. Visual acuity was recorded with 5 points. Results: 1) Measurable rate (visual acuity chart use degree of cooperation). 407 children completed visual examination of Lea Symbols, with an overall detectable rate of 92.08%; 402 children completed HOTV vision examination, with an overall detectable rate of 90.95%. The detectable rate of the former was higher than that of the latter, but the difference was not statistically significant (χ² =0.417, P=0.580). Further study found that the detectable rate of both visual acuities increased with age, and children were able to complete both visual acuity tests after the age of 3. 2) Results and comparison of two visual acuity (5-point recording method). The visual acuity of Lea was 4.89±0.05 in the right eye and 4.90±0.05 in the left eye. HOTV visual acuity was 4.84±0.05 in the right eye and 4.85±0.04 in the left eye. The visual acuity of the former was better than that of the latter, the difference was statistically significant (right eye: t=3.171, P=0.003; left eye: t=3.230, P=0.003). 3) Correlation between visual development and age. There was a significant positive correlation between the two types of visual development and age (P<0.001), that is, visual acuity gradually improves with age. 4) The relationship between visual development and eye and sex. There was no difference in visual development between the left and right eyes, but male children had better visual development than female, and the difference was statistically significant (P<0.05). Conclusion: Lea Symbols and HOTV visual acuity charts are recommended for visual acuity examination of children over 3 years old, and children are more likely to receive examination of Lea Symbols visual acuity chart. With the growth of age, the visual development of children shows a trend of improvement. Lea vision is superior to HOTV vision. Vision development has nothing to do with the eye, male children’s vision development is faster than female children.

目前对于成人圆锥角膜(keratoconus，KC)的研究已经很广泛，而对于儿童KC的研究则较少，其诊断和治疗常常基于成人KC的研究基础。与成人KC相比，儿童KC的发展更迅速、造成的后果更严重，其导致的儿童视觉障碍会追随其一生，对其生活质量以及教育发展产生严重的负面影响。为了对儿童KC的治疗有较全面的认识和理解，本文针对近几年儿童KC的治疗进展，对不同治疗方法的安全性、有效性和治疗时机等方面进行综述。

At present, the research on adult keratoconus has been extensive, while the research on pediatric keratoconus is few. The diagnosis and treatment of pediatric keratoconus are often based on the study of keratoconus in adults. Pediatric keratoconus is more aggressive than adult keratoconus, resulting in visual impairment that can follow throughout their lives and have a serious negative impact on their quality of life and educational development. In this paper, according to the treatment progress of pediatric keratoconus in recent years, the safety, effectiveness, and treatment timing of different treatment methods were summarized, in order to have a more comprehensive understanding of the treatment of pediatric keratoconus.

近视是危害儿童青少年视力最常见的眼部疾病，高度近视对视功能造成极大的威胁。近年来，我国近视发病率逐年升高，对近视筛查与防控的需求也不断增加，随着人工智能理论与技术的不断发展与成熟，可以辅助眼科医生进行近视筛查、诊断与治疗。本文将简要介绍人工智能在近视的筛查、预测、检测、病理性近视以及角膜屈光手术中的应用，浅谈了目前人工智能在研究中存在的可比度较低、影像要求较高、可解释性较低及隐私保护等问题，并展望人工智能在近视相关领域的应用前景。

Myopia is the most common ocular disease that harms the vision of children and adolescents. High myopia poses a great threat to visual function. The incidence of myopia in China has been increasing in recent years, and the demand for myopia screening, prevention and control has also expanded. With the continuous development of artificial intelligence theory and technology, Artificial intelligence can assist ophthalmologists in myopia screening, diagnosis and treatment. This review will briefly introduce artificial intelligence in the screening, prediction, and detection of myopia; also, the application in pathological myopia and corneal refractive surgery. This review will discuss some problems of current artificial intelligence research, such as low comparability, high image requirements, low interpretability, privacy protection, and the application prospects of artificial intelligence in myopia.

本文报告1例2 8岁男性青年患者，行飞秒制瓣准分子激光原位角膜磨镶术(laser-assisted situ keratomileusis，LASIK)术 后1个月视力进行性下降，小瞳下行电脑验光矫正视力，右眼为0.3(-0.25×86°)，左眼为0.2(-0.50×91°)。眼前节及眼底检查未见器质性病变，视觉电生理检查未见异常。视光专科检查示负相对调节/正相对调节(negative correlatione regulation/positive ccorrelation regulation，NRA/PRA)：+2.00 D/?10.00 D(行PRA时稍作停顿后又可看清)，Flipper拍检查：右眼(oculus dexter，OD) 10 cpm(+)，左眼(oculus sinister，OS) 22 cpm(+)，双眼(binocular，OU)12 cpm(+)，正镜片逐渐通过困难。隐斜检查：2△BO@D，13△BI@N。调节性集合与调节的比值(accommodation convergence/accommodation，AC/A)=1。患者PRA显著增高，Flipper检查正片通过困难，看近时外隐斜大于看远，提示可能存在“集合不足，调节超前”。给予托比卡胺滴眼液滴眼3次后验光：OD +1.00/-0.50×80°=1.0，OS +0.75/-0.25×65°=1.0，进一步证实了“调节痉挛”的诊断。给予托比卡胺滴眼液滴双眼，睡前1次，结合调节放松训练。4周后，裸眼视力及屈光度稳定在正常范围。临床上对于视力下降原因不明、排除眼部器质性疾病的患者，经过仔细询问病史、睫状肌麻痹检影和视功能检查“调节痉挛”不难诊断。除传统的睫状肌麻痹剂和近附加镜外，治疗方案建议加用视功能训练可使视力恢复并稳定。

A 28-year-old man was referred to our hospital because of blurred vision in both eyes after LASIK flap made by femtosecond laser surgery for 1 month. The best corrected visual acuity based on computerized optometry was 0.3 (-0.25×86°) in the right eye and 0.2 (-0.50×91°) in the left eye. Routine examinations were conducted to exclude eye diseases. Visual electrophysiological examination showed no abnormalities. Optometry specialty examination: negative relative accommodation (NRA) and positive relative accommodation (PRA) were +2.00 D/?10.00 D (when doing PRA, the patient could see clear slowly after a pause). Flipper examination showed: OD 10 cpm(+), OS 22 cpm(+), OU 12 cpm(+). Phoria-measurement showed 2 prism degree BO@D and 13 prism degree BI@N. AC/A=1. The patient’s high PRA, flipper examination results and convergence insufficiency at near distance indicated the possibility of “convergence insufficiency and accommodative spasm”. Cycloplegic refraction was planned to assess the real diopter. After instillation of cycloplegic drops, the UCVA improved to 1.0 and the refractive error to -0.25×93 in the right eye, in the left eye to 1.0 and the refractive error to -0.25×75. the BCVA was 1.0 (+1.00/-0.50×80°) in the right eye and 1.0 (+0.75/-0.25×65°) in the left eye. A diagnosis of accommodative spasm was made. The patient was counseled and continued cycloplegic drops one time daily before bedtime, participated in vision training for 4 weeks. This patient was a rare occurrence of accommodative spasm after FSLASIK surgery. Young patients with poor gain in UCVA can be subjected to a corrective procedure accidentally. Relaxation exercises and cycloplegic drops may cure accommodative spasm. For patients with unexplained causes of vision loss and excluded organic diseases of the eye, it is not difficult to diagnose “accommodative spasm” by careful medical history inquiry, ciliary muscle paralysis optometry and visual function examination. In addition to traditional ciliary palsy agent and reading glasses, it is suggested that visual function training can restore and stabilize the treatment effect.

目的：探究特发性黄斑前膜(idiopathic macular epiretinal membrane，IMEM)患者在光学相干断层扫描(optical coherence tomography，OCT)的形态学改变与视力的相关性。方法：回顾性研究。基于OCT图像4级分级方案，纳入3级及以下的特发性黄斑前膜患者35例共37只眼进行OCT扫描，并借助第三方软件分析并获取每只眼在黄斑中心凹直径分别为1、3、6 mm共3个同心圆区域内视网膜各层的平均厚度值，并按照是否存在内核层(inner nuclear layer，INL)囊样改变分为两组。通过建立最小分辨角对数(minimum resolution angle in logarithmic，logMAR)最佳矫正视力(best corrected vision acuity，BCVA)与视网膜各层厚度值的多元线性回归方程，以及比较有INL囊样改变及无INL囊样改变两组的视力，分析视力与视网膜各层厚度值及INL囊样改变的关系。结果：多元线性回归分析显示，在直径1 mm的区域内，logMAR BCVA与神经纤维层(retina nerve fiber layer，RNFL)、INL的厚度值均呈正相关(均P<0.05)，而在直径3 mm和6 mm的区域内，logMAR BCVA仅与INL的厚度值呈正相关(均P<0.05)。与无INL囊样改变组相比，有INL囊样改变组视力及INL厚度差异均有统计学意义(均P<0.05)。结论：特发性黄斑前膜患者当前的视力主要与RNFL和INL厚度值相关。发生在INL层的囊样改变可能很好的提示INL增厚，其与视力具有相关性，具有这种囊样改变的患者往往视力也较差。

Objective: To investigate the morphological changes detected by spectral domain optical coherence tomography (OCT) and their relevance to vision in patients with idiopathic macular epiretinal membranes (IMEM). Methods: This is a retrospective study. OCT recorded 37 eyes with stage 3 and below IMEM according to the 4-level grading system based on OCT images among 35 patients. We managed to obtain thickness of all retina layers in three concentric circular regions with a diameter of 1 mm, 3 mm and 6 mm across macular fovea with the help of a third-party software. Plus we divided all 37 eyes into two groups according to whether there were cystic changes in the inner nuclear layer (INL). Multiple linear regression analyses were performed between thickness of all retina layers and current minimum resolution angle in logarithmic (logMAR) best corrected visual acuity (BCVA). The difference of BCVA between groups with cystic changes and without was also compared. Thus, the relationships between visual acuity and thickness of retina layers, cystic changes in INL were analyzed. Results: Multiple linear regression analyses revealed that thickness of both retina nerve fiber layer (RNFL) and inner nuclear layer have positive correlation with logMAR BCVA in the region with a diameter of 1 mm (P<0.05), while in regions of a diameter of 3 mm and 6 mm, only INL thickness remained positively relevant (all P<0.05). There were significant differences in BCVA and thickness of INL between groups with INL cystic changes and without (all P<0.05). Conclusion: Current visual acuity among preoperative IMEM patients was mostly associated with thickness of RNFL and INL. Cystic change in INL layer may be a good indicator of INL thickening and was visually correlated. Those with this change tend to have worse vision.

目的：调查引导式教育训练对视力障碍学生生活质量的影响。方法：前瞻性随机对照临床研究。选取2020年在泉州特殊教育学校就读视力障碍学生，按照入组条件随机分为引导式教育训练组和对照组，引导式教育训练组进行引导式教育训练，对照组进行常规康复训练。采用中文版低视力者生活质量量表(Chinese-version low vision quality of life questionnaire，CLVQOL)评估视力障碍学生的基线和训练3个月的生活质量，并进行比较分析。结果：72例视力障碍学生全部完成了基线和随访时的生活质量问卷调查。进行基线检查时，各组CLVQOL评分总分差异无统计学意义(P>0.05)。3个月后，各组CLVQOL评分总分均增加，引导式教育训练组从基线59(48.5，80.5)上升到105(97.5，119.5)，差异有统计学意义(Z=?4.781，P<0.001)；对照组从基线69(56，85)上升到106(80，112)，差异有统计学意义(Z=?4.438，P<0.001)；引导式教育训练组在CLVQOL评分总分(P=0.021)及阅读和精细工作维度(P=0.004)、日常生活能力维度(P=0.003)的评分差值均高于对照组。结论：引导式教育训练是一种重要的低视力康复训练方法，可以明显提高患者的生活质量。

Objective: To investigate the effect of conductive education training on the quality of life in visually impaired students. Methods: It was a prospective randomized controlled trial. The visual impairment students who had registered in Quanzhou Special Education School in 2020 were selected and randomly divided into two groups: conductive education training group and control group. The conductive education training group received conductive education training, while the control group received routine rehabilitation training. Chinese version low vision quality of life questionnaire (CLVQOL) was used to assess the quality of life of low vision students at baseline and 3 months after training, and comparative analysis was conducted. Results: All 72 students with visual impairment completed CLVQOL surveys. At baseline, there was no significant difference in total CLVQOL scores between groups. After 3 months, overall CLVQOL scores increased in both groups, from baseline 59 (48.5, 80.5) to 105 (97.5, 119.5) in the conductive education group (Z=-4.781, P<0.001), and 69 (56, 85) to 106 (80, 112) in the control group (Z=-4.438, P<0.001). The total score of CLVQOL (P=0.021), reading and fine work subscale (P=0.004), and daily activities subscale (P<0.003) in the conductive education training group were higher than those in the control group. Conclusion: Conductive education training is an important method of low vision rehabilitation training, which can significantly improve the quality of life of patients.

目的：分析眼科护理对人工智能技术应用的内在需求，为眼科医院临床的人工智能技术开发及应用提供导向与依据。方法：采用整群抽样和单纯随机抽样相结合的方法，于2019年7月至2019年8月，对抽取的中山大学中山眼科中心，中山大学附属第一医院、珠海市人民医院、无锡人民医院、新疆维吾尔族自治区人民医院等目标医院其中的眼科护理人员进行问卷调查，内容包括一般资料及人工智能需求等。结果：调查对象绝大部分来自三级甲等医院(89.2%)，以华南地区为主(87.2%)，人工智能在眼科临床护理应用的需求多种多样，其中以健康教育、接诊与分诊、患者回访领域需求最强烈，分别占比95.7%、93.5%、93.2%。结论：人工智能在眼科临床护理应用有较强及多样化的需求，应结合实际需求为导向，重点推进人工智能在眼科患者健康教育等相关应用的研发。

Objective: To analyze the internal demands of the application of artificial intelligence technology to ophthalmic care, and provide guidance and basis for the development and application of artificial intelligence technology in ophthalmic hospitals. Methods: Using the method of combining cluster sampling with simple random sampling, a questionnaire survey was conducted on the ophthalmic nursing staff in the selected target hospitals from July to August 2019, which included general information and artificial intelligence needs. Results: Most of the respondents came from the third-class hospitals (89.2%), and hospitals in South China account for 87.2% of them. There are diverse demands of artificial intelligence in ophthalmology clinical nursing applications, including health education, clinical reception and triage, patients return visits, which have the strongest demand for the artificial intelligence, accounting for 95.7%, 93.5%, and 93.2%, respectively. Conclusion: The application of artificial intelligence in ophthalmic clinical nursing has strong and diversified demands, and the research and development of artificial intelligence in the health education of ophthalmic patients and other related applications should be promoted according to the actual demands.

青光眼睫状体炎综合征(Posner-Schlossman syndrome，PSS)表现为单眼反复发作性非肉芽肿性前葡萄膜炎，伴有眼压升高，可发展为慢性继发性青光眼，最终导致视神经损伤。尽管PSS总体预后良好，但仍有部分患者因反复眼压骤升造成视神经损伤持续进展，甚至导致失明。目前，PSS的确切病因尚不明确，治疗方式以控制炎症及眼压为主。本文将从病因及治疗两方面阐述PSS的研究现状，以期为PSS相关基础研究及临床诊治提供思路及参考。

Posner-Schlossman syndrome (PSS), also called glaucomatocyclitic crisis, is characterized by recurrent non-granulomatous anterior uveitis, accompanied by elevated intraocular pressure. It is able to develop into chronic secondary glaucoma and eventually lead to optic nerve injury. Although the overall prognosis of PSS is favourable, there are still some patients whose optic nerve injury continues to progress and even lead to blindness due to recurrent attacks of ocular hypertension. At present, the exact cause of PSS is not clear, and the treatment is mainly to control inflammation and intraocular pressure. This article will elaborate the research status of PSS from two aspects of etiology and treatment to provide ideas and reference for the basic research clinical diagnosis and treatment of PSS.

目的：了解八年制医学生对全程导师的教学需求与满意度。方法：将中山大学八年制临床医学生分为低年级、高年级两组，均进行匿名线上问卷调查。分析问卷结果，并比较两组间的不同。结果：回收问卷352份。学生对导师个人“比较满意”占比高(低年级45.56% vs 高年级37.79%，P=0.087)，对全程导师制度“比较满意”占比高(低年级 36.67% vs 高年级33.14%，P=0.806)。对全程导师制度“很了解”与“比较了解”的学生在低年级中明显低于高年级的占比(16.67% vs77.91%，P<0.001)。低年级学生期待全程导师在职业规划、临床思维、科研思维、心理健康发挥较大影响的占比均高于高年级的实际评估(构成比4个方面均P<0.001，选择“有很大影响”及“比较有影响”在低、高年级占比分别为83.33% vs 36.63%，92.22% vs 29.07%，91.67% vs 31.39%，62.78% vs 38.37%)。结论：学生对全程导师个人及制度均较满意，但存在低年级对该制度了解少、师生联系少、导师实际作用低于学生预期、科研训练机会不足等问题。亟需完善全程导师制，推动临床医学高水平人才的培养。

Objective: To evaluate the teaching needs and satisfaction of the eight-year program medical students to the whole-course tutors. Methods: An anonymous online questionnaire survey was conducted among the eight-year program medical students at Sun Yat-sen University. All students were divided the junior group and the senior group, and the differences between the two groups were compared. Results: A total of 352 valid questionnaires were collected. The proportion of students who were fairly satisfied with their whole-course tutors was 45.56% in  the junior group and 37.79% in the senior group (P=0.087). The proportion of students who were fairly satisfied with the whole-course tutorial system was 36.67% in the junior group and 33.14% in the senior group (P=0.806). The proportion of students who “know well” and “know fairly well” about the whole-course tutorial system in the junior group was significantly lower than that in the senior group (16.67% vs 77.91%, P<0.001). The proportion of students in the junior group expecting their whole-course tutors “having a great impact” or “having some impact” on career planning, clinical thinking, scientific research thinking and mental health was significantly higher than that in the senior group (tests for proportions, all P<0.001, 83.33% vs 36.63%, 92.22% vs 29.07%, 91.67% vs 31.39%, 62.78% vs 38.37%). Conclusion: The eight-year program medical students are satisfied with their whole-course tutors and the whole-course tutorial system. However, some problems still exist, such as lower grade students lack of understanding of the whole-course tutorial system, insufficient contact between tutors and students, the actual influences of tutors failing to meet the students’ expectation, and insufficient opportunity of scientific research and training. It is urgent to improve the whole-course tutorial system and promote the cultivation of qualified medical talents.

目的：探讨急救护理技能规范化培训考核在眼科护士中的应用效果。方法：对暨南大学附属深圳眼科医院142名眼科护士实施急救护理技能的规范化培训考核，比较培训前后急救理论考核成绩及急救技能操作考核成绩的差异，并采用自制调查问卷进行培训评价的调查。结果：在实施急救护理技能规范化培训后，眼科护士的急救理论与技能操作考核成绩均高于培训前，差异有统计学意义(P<0.05)；90%以上的眼科护士对急救培训持肯定意见。结论：急救护理技能规范化培训考核提高了眼科护士的临床急救护理水平，培养了良好的急救护理意识和团队协作精神，同时增加了护士的自我价值及职业认同感，获得了较好的培训效果。

Objective: To explore the application effect of standardized training and assessment of emergency nursing skills in ophthalmology nurses. Methods: We implemented standardized training and assessment of emergency nursing skills for 142 ophthalmology nurses in our hospital, compared the difference between the first aid theory and the first aid skill operation before and after the training, and used a self-made questionnaire to conduct training evaluation surveys. Results: After implementing the standardized training of emergency nursing skills, the assessment scores of first aid theory and skill operation of ophthalmology nurses were higher than those of the pre-training assessment. And the difference was statistically significant (P<0.05). More than 90% of ophthalmology nurses had a positive opinion on first aid training. Conclusion: Standardized training and assessment of emergency nursing skills have improved the clinical emergency nursing level of ophthalmology nurses and cultivated a good emergency nursing awareness and teamwork spirit. At the same time, they have strengthened nurses’ self-worth and professional identity, and achieved better training results.

为较好地满足眼科诊疗的使用要求，提升医护人员的工作效率以及患者的治疗效果，笔者设计了一种眼科多功能尺。该眼科多功能尺主要采用PVC材料，其结构主要包括圆盘、主尺、第一副尺、第二副尺以及第三副尺；功能主要包括测量长度、视力检查、照明、患者体位角度测量等。该眼科多功能尺设计巧妙，功能较齐全，能够较好地满足眼科医疗和诊断过程的使用要求。

To meet the demands of ophthalmic medical diagnosis, and to improve the efficiency of medical staff and patients’ treatment, the authors designed an ophthalmological multifunctional ruler. Its main material is PVC, and mainly includes a circular disk and 4 rules (the main ruler, the first ruler, the second ruler and the third ruler). Its functions mainly contain the measurement of length, visual test, illumination, the angle measurement for patients position and so on. The ruler is ingenious in design and has complete functions, which can meet the requirements of ophthalmic medical treatment and diagnosis.