目的：了解中国华南地区眼科患者近年术前四项指标的感染状况及阳性患者在不同眼病中的分布。方法：回顾性分析2017年1月~2023年12月在中山大学中山眼科中心进行乙型肝炎表面抗原(HBsAg)、丙肝肝炎病毒抗体(抗-HCV)、梅毒螺旋体抗体(抗-TP)、人类免疫缺陷病毒抗体(抗-HIV)指标筛查的门诊、手术和(或)住院患者资料，并记录和分析患者各项指标的阳性情况。结果：共纳入253 246例患者，HBsAg、抗-HCV、抗-TP和抗-HIV阳性率分别是9.00%、0.45%、1.55%、0.13%。两种或两种以上感染指标阳性的患者共有686例， HBsAg和抗HCV同时阳性的例数最高(57.29%)，其次为抗-HIV和抗-TP(15.74%)。2017~2023年HBsAg阳性率逐年递减，而抗-HCV、抗-HIV、抗-TP阳性率变化不明显。男性的HBsAg、抗-HCV、抗-TP、抗-HIV阳性率均高于女性，差异均有统计学意义(P <0.001)。HBsAg、抗-HCV、抗-TP、抗-HIV阳性率在不同年龄段比较差异均有统计学意义(P <0.001)。在HBsAg、抗-HCV、抗-TP阳性患者中，晶状体病的病例数占比最高，分别为36.72%、39.12%、46.97%。其次是玻璃体/视网膜疾病，占比分别为22.52%、19.65%、19.69%。在抗-HIV阳性患者中，玻璃体/视网膜疾病的病例数占比最高，为42.99%，其次是晶状体病，占26.17%，葡萄膜炎占8.72%。结论：本研究揭示了眼科患者术前四项指标的感染情况及感染患者在不同眼病中的分布，这对于评估眼科手术风险、制定感染控制措施具有重要意义。

Objective: To understand the infection status of four blood-borne pathogens among ophthalmology patients in South China and the distribution of positive patients across different eye diseases. Methods: A retrospective analysis of data from outpatient and inpatient or surgical ophthalmic patients who underwent screening for hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (anti-HCV), treponema pallidum antibody (anti-TP) and human immunodeficiency virus antibody (anti-HIV) at Zhongshan Ophthalmic Center of Sun Yat-sen University from January 2017 to December 2023. The positivity rates of these markers were recorded and analyzed. Results: A total of 253246 patients were included in the study, with positivity rates for HBsAg, anti-HCV, anti-TP, and anti-HIV at 9.00%, 0.45%, 1.55% and 0.13%, respectively. Among these, 686 patients tested positive for two or more markers, with the highest co-positivity observed for HBsAg and anti-HCV (57.29%), followed by anti-HIV and anti-TP (15.74%). The positivity rate of HBsAg showed a yearly decline, while the rates for anti-HCV, anti-HIV, and anti-TP remained relatively stable from 2017 to 2023. Males had significantly higher positivity rates for HBsAg, anti-HCV, anti-TP, and anti-HIV compared to females (P < 0.001). Significant differences in positivity rates for these markers were also observed across different age groups (P < 0.001). In patients with positive HBsAg, anti-HCV, and anti-TP, the proportion of cases with lens diseases were the highest, at 36.72%, 39.12%, and 46.97%, respectively. Vitreoretinal diseases followed, with proportions of 22.52%, 19.65%, and 19.69%, respectively. Among patients with positive anti-HIV, the proportion of cases with vitreoretinal diseases was the highest, at 42.99%, followed by lens diseases at 26.17%, and uveitis at 8.72%. Conclusions: This study reveals the infection status of four blood-borne pathogens in ophthalmology patients and the distribution of infected patients across different eye diseases, which is significant for assessing the risks of ophthalmic surgery and formulating infection control measures.

目的：回顾2型神经纤维瘤病(neurofibromatosis type 2, NF2)患者的眼部表现，分析NF2眼部病变的临床和影像学特征，以助该病的早期诊断。方法：收集来自深圳市眼科医院的1例和来自中山眼科中心的3例NF2患者完整的临床资料并进行总结分析。结果：这4例患者均因眼部异常首诊于眼科且符合曼彻斯特诊断标准。4例患者中，3例为NF2早发型(<20岁)，1例为晚发型(>20岁)，男女比例1∶1。3例患者因视力下降、1例患者因复视首诊于眼科。3例行眼底光学相干断层成像(optical coherence tomography, OCT)检查显示，视网膜错构瘤2例，视网膜前膜2例，视盘隆起2例，视网膜神经纤维层和节细胞层变薄1例。其他表现包括麻痹性斜视2例，复视1例，白内障1例，球后段视神经增粗1例，眼眶肿瘤1例。结论：NF2的眼部表现多种多样，可出现在神经症状和听力损失之前。详细的眼科检查及影像学检查对年轻患者的早期诊断非常有价值，有助于选择更好的治疗计划。

Objective: Review the ocular manifestations of patients with neurofibromatosis type 2 (NF2), and analyze the clinical and imaging features of the ocular lesions in NF2, so as to facilitate the early diagnosis of this disease. Methods: The complete medical records of 1 case from Shenzhen Eye Hospital and 3 cases of NF2 from Zhongshan Ophthalmic Center were collected. Results: All four patients were first diagnosed in ophthalmology due to eye symptoms and met the Manchester diagnostic criteria. Of the four patients, three were NF2 early hairstyles (<20 years old), one was late hairstyle (>20 years old), and the male-to-female ratio was 1:1. Three patients were first diagnosed in the ophthalmology department due to decreased visual acuity, and one patient was first diagnosed due to diplopia. Optical coherence tomography (OCT) examinations were performed on three patients, which showed that there were two cases of retinal hamartoma, two cases of epiretinal membrane, two cases of optic disc elevation, and one case of thinning of the retinal nerve fiber layer and ganglion cell layer. Other manifestations included two cases of paralytic strabismus, one case of diplopia, one case of cataract, one case of thickening of the retrobulbar optic nerve, and one case of orbital tumor. Conclusions: The ocular manifestations of NF2 are diverse and can precede neurological symptoms and hearing loss. Detailed ophthalmic examinations and imaging studies are highly valuable for early diagnosis in young patients, aiding in the selection of a better treatment plan.

目的：通过计算机体层扫描（computed tomography，CT）平扫和三维重建等利用图像后处理系统软件，评估视网膜母细胞瘤（Retinoblastoma，RB）病灶的钙化水平，并探究其与患者性别、眼别、年龄及影像学分期之间的相关性。方法：选取2022年5月—2024年12月经我院眼眶病与眼肿瘤科手术病理证实及临床确诊的108例RB患者127眼进行分析。应用CT重建和工作站分割技术对眼球、肿瘤、钙化进行分割和采用容积定量分析方法，运用R语言进行统计学处理，比较不同性别（男/女）、眼别（左/右）、年龄分层及影像学分期间的钙化最高CT值、肿瘤钙化容积(calcified regional volume，CRV)、肿瘤容积(tumor volume，TV)、患侧容积(eyeball volume，EV)、CRV/EV、TV/EV、CRV/TV比值的差异。结果：不同性别组其EV比较差异有统计学意义（P<0.05）；不同年龄组RB其CRV、EV、CRV/EV比较差异有统计学意义（P<0.05）；影像分期（眼内期、青光眼期、眼外期组）和晶状体位置变化（位置改变、形态位置密度改变、无变化组）的CRV 、TV、CRV/EV、TV/EV差异均有统计学意义（P< 0.05）。结论：RB患者的钙化沉积水平随着病程推进，在眼球内期、青光眼期至眼外期的不同阶段呈现逐级升高的态势。晶状体位置变化随病情进展、RB患者钙化程度逐渐增加。

Objective: To evaluate the calcification level of retinoblastoma (RB) lesions using image post-processing system software, such as that for computed tomography (CT) noncontrast scanning and three-dimensional reconstruction. Additionally, this study aimed to explore the relationship between retinoblastoma (RB) and patient gender (male/female) , as well as the correlation among ocular (left/right), age, and radiographic stage (e.g., international intraocular RB stage).  Methods: The study enrolled 108 patients (127 eyes) with tumors confirmed by both surgical pathology and clinical diagnosis. These patients received treatment at the Orbital Disease and Ocular Oncology Department of Zhongshan Ophthalmic Center, Sun Yat-sen University (ZOC, SYSU) from May 2022 to December 2024. CT reconstruction and workstation segmentation techniques were used to delineate the eyeball, tumour, and calcification. A quantitative volumetric analysis method was applied, and statistical processing was conducted using R language (version 4.2.1). Comparisions were made across different genders (male/female), eye segmentation (left/right), age stratifications, and imaging stages. The t-test was applied to analyze the highest CT value, calcified regional volume (CRV), tumor volume (TV), eyeball volume (EV), CRV/EV ratio, TV/EV ratio, and CRV/TV ratio in these tumor patients. Results: There was no significant differences in CT value, CRV, TV,  CRV/EV ratio, TV/EV ratio, and CRV/TV ratio among patients with different eye sides, genders and age groups (P>0.05). Only EV showed statistical significant across different age groups. Statistically significant changes were observed in CRV, TV, CRV/EV ratio, TV/EV ratio , and CRV/TV ratio with respect to both intraocular stage (including intraocular stage, glaucoma stage, extraocular stage) and lens position changes (inculding position changes, morphological position density changes, no change groups) (P< 0.05), No other statistically significant differences were found (P>0.05). Conclusions: In this group of tumor patients, the level of calcification deposition gradually increased as the disease progressed through the intraocular stage, glaucoma stage, and extraocular stage. Lens positional changes were associated with a gradual increase in the degree of calcification in patients with retinoblastoma (RB) as the disease advanced.

目的：了解干眼患者相关知识、管理态度及防治行为的现状及影响因素，为临床制定针对性的干预措施提供依据。方法：采用便利抽样法，选取2025年1—3月在中山大学中山眼科中心干眼与眼表疾病门诊就诊的患者为研究对象。调查工具为一般资料调查表、中国干眼问卷及干眼患者知信行问卷。知信行问卷包括知识（16个条目）、态度（7个条目）、行为（9个条目） 3个维度，共32个条目。使用单因素分析及多元线性回归分析确定影响因素。 结果：有效回收调查问卷325份，325例干眼患者的知信行问卷平均得分为（62.89±9.00）分；标准分为（78.61±11.25）分，处于中等水平。其中知识维度平均得分为（9.89±4.88）分，134例（41.2%）处于较差水平；态度维度得分较高，总均分为（26.92±2.24）分，标准分（96.16±8.03）分，处于较高水平；行为维度总均分为（26.06±5.43）分，标准分（72.41±15.09）分，处于中等水平。单因素分析结果显示，不同年龄、文化程度、家庭人均月收入、是否经常使用电子设备、是否主动查询疾病知识的干眼患者，其知信行得分比较差异有统计学意义（P<0.05）。年龄、文化程度、是否主动查询疾病知识是干眼患者知信行得分的影响因素（P<0.05）。 结论：干眼患者知信行水平处于中等，表现为疾病知识掌握片面、防治态度较积极但行为水平有待提高，且受多因素影响，应制订精准、个性化健康教育内容，以提高干眼患者的知信行水平。

Objective: To investigate the current status and identify the influencing factors regarding the knowledge, attitudes, and practices related to dry eye disease (DED) among patients. This study aims to provide a solid foundation for the development of targeted clinical interventions. Methods: With convenience sampling, patients diagnosed with DED were selected at the Dry Eye and Ocular Surface Disease Clinic of Zhongshan Ophthalmic Center from January to March 2025 as study subjects. The survey tools consisted of a general information questionnaire, the Chinese Dry Eye Questionnaire, and the Knowledge, Attitudes, and Practices (KAP) Questionnaire for DED patients. The KAP questionnaire was structured into three dimensions: knowledge (16 items), attitudes (7 items), and practices (9 items), making a total of 32 items. Univariate analysis and multiple linear regression were employed to identify influencing factors. Results: A total of 325 valid questionnaires were collected. Among the 325 DED patients, the average KAP score was 62.89±9.00, and the standardized score was 78.61±11.25, indicating a moderate level. In the knowledge dimension, the average score was 9.89±4.88 and 134 patients (41.2%) had poor scores. The attitudes dimension showed a relatively high level, with a total mean score of 26.92±2.24 and a standardized score of 96.16±8.03, reflecting that the patients generally held positive attitudes towards the prevention and treatment of DED. For the practices dimension, the total mean score was 26.06±5.43, and the standardized score was 72.41±15.09, indicating a moderate level of behaviorial practices. Univariate analysis revealed significant differences in KAP scores among patients with different ages, education levels, monthly household income per capita, frequencies of electronic device use, and whether they actively sought disease-related knowledge (P<0.05). Further, age, education level, and proactive information-seeking behavior were identified as significant influencing factors for KAP scores (P<0.05). Conclusions: The KAP level of DED patients is moderate. Their disease knowlege is fragmented, while they exhibit positive attitudes toward prevention and treatment. However, their behavioral practices are subptimal and are influenced by multiple factors. Therefore, it is essential to develop tailored and personalized health education programs to enhance the KAP level of DED patients.