年龄相关性黄斑变性(age-related macular degeneration, AMD)是导致老年人失明的主要原因之一,其特征为光感受器的死亡和视网膜色素上皮细胞的变性。该病的发病机制复杂,涉及遗传、环境和代谢等多种因素。细胞衰老是AMD的重要危险因素,表现为细胞在经历有限次数的分裂后进入永久性细胞周期停滞状态。随着年龄增长,衰老细胞的数量增加,并与多种年龄相关的慢性疾病密切相关。细胞衰老的潜在机制包括氧化应激、DNA损伤、线粒体功能障碍、自噬/线粒体自噬缺陷以及表观遗传改变等。在AMD中,色素上皮细胞、血管内皮细胞、Bruch膜、感光细胞和小胶质细胞等不同类型的细胞均表现出衰老及其相关变化。细胞衰老在AMD的发病机制中起着关键作用,涉及多种视网膜细胞类型和血管系统的退化。通过深入研究这些机制,期望能开发出更有效的治疗方法,以帮助患者恢复和保护视力。本文回顾了细胞衰老的生物学机制及其在AMD中的作用,深入探讨了不同细胞衰老引发AMD发病的具体机制,旨在为AMD的发病机制和治疗研究提供新思路。
Age-related macular degeneration (AMD) is a leading cause of blindness among the elderly, characterized by the degeneration of retinal pigment epithelial cells and the death of photoreceptors. The pathogenesis of AMD is complex, involving a multitude of factors, including genetic, environmental, and metabolic influences. Cellular senescence serves as a significant risk factor for AMD, where cells enter a permanent state of cell cycle arrest after a limited number of divisions. As age increases, the accumulation of senescent cells is closely associated with various age-related chronic diseases. Key mechanisms underlying cellular senescence include oxidative stress, DNA damage, mitochondrial dysfunction, defects in autophagy and mitophagy, and epigenetic alterations. In the context of AMD, various cell types-including pigment epithelial cells, vascular endothelial cells, cells of Bruch's membrane, photoreceptors, and microglia-exhibit signs of senescence and related changes. Cellular senescence plays a pivotal role in the pathogenesis of AMD, contributing to the degeneration of different retinal cell types and supporting vascular systems. By thoroughly investigating these mechanisms, there is hope for the development of more effective therapies aimed at restoring and protecting vision in affected patients. This article reviews the biological mechanisms of cellular senescence and its role in AMD, exploring how different cell types contribute to the disease's onset, with the goal of providing new insights into the pathogenesis and treatment of AMD.
糖尿病性黄斑水肿(diabetic macular edema, DME)是糖尿病最常见和最严重的并发症之一,也是中青年劳动人群常见的致盲原因。DME病理生理机制复杂,是多种因素相互作用的结果,控制这些危险因素是降低发病率的关键。DME是全身病相关性眼病,其发生与发展受众多危险因素的影响,但此前文献对其总结不足,本文从全身因素及眼部因素两个方面就DME的危险因素进行综述。全身危险因素主要包括血糖控制欠佳、糖尿病病程长、高血压、血脂代谢紊乱、肥胖、肾功能异常、妊娠状态、降糖药物使用、贫血、阻塞性睡眠呼吸暂停低通气综合征、遗传因素、吸烟、饮酒、高血钙、低血镁等;而其眼部危险因素主要包括白内障、青光眼及玻璃体切割术、全视网膜激光光凝术、合并视网膜静脉阻塞和相关细胞因子等。深入认识和理解这些危险因素,有助于更好地预防和早期治疗DME,同时为治疗糖尿病视网膜病变过程中控制DME进展提供指引和参考。但是,其中一部分因素还存在一定争议,更多的DME危险因素仍有待进一步探索,期望在不久的将来,更多基础和前瞻性临床研究为DME危险因素及治疗提供高质量的证据。
Diabetic macular edema (DME) is one of the most common and severe complications of diabetes, and it is a leading cause of blindness in the working-age population. The pathophysiology of DME is complex, resulting from the interplay of various factors. Controlling these risk factors is crucial in reducing the incidence of DME. As a systemic diseaserelated ocular condition, the onset and progression of DME are influenced by numerous risk factors. However, previous literature has provided insufficient summaries of these factors. This review aims to summarize the risk factors for DME from both systemic and ocular perspectives. The systemic risk factors primarily include poor glycemic control, prolonged duration of diabetes, hypertension, dyslipidemia, obesity, renal dysfunction, pregnancy, the use of hypoglycemic medications, anemia, obstructive sleep apnea-hypopnea syndrome, genetic factors, smoking, alcohol consumption, hypercalcemia, and hypomagnesemia. On the other hand, ocular risk factors include cataracts, glaucoma and vitrectomy, panretinal photocoagulation, coexisting retinal vein occlusion, and related cytokines. A deeper understanding of these risk factors will aid in the better prevention and early treatment of DME, while also providing guidance and reference for controlling the progression of DME during the treatment of diabetic retinopathy. However, some of these factors remain controversial, and additional DME risk factors still need to be explored. It is hoped that, in the near future, morefoundational and prospective clinical studies will provide high-quality evidence on DME risk factors and treatments.
球形晶状体是一种罕见的先天性晶状体悬韧带疾病,表现为晶状体前后径增加,赤道半径减小,类似球形。临床特点包括浅前房、晶状体源性高度近视、晶状体脱位及继发青光眼等。治疗上早期可以通过验光配镜提高视力,当继发晶状体脱位及青光眼时需尽早进行手术治疗。本例报道一例72岁男性患者,因右眼视力下降2年入院。既往近视,近视逐渐加深,近2年患者双眼配镜-10D,视力无明显改善。就诊后考虑球形晶状体所致晶状体不全脱位合并白内障,入院后行囊袋拉钩固定下白内障超声乳化+人工晶状体悬吊+前段玻璃体切除术。患者术后1个月后复诊,发现黄斑水肿,予以复方平地木颗粒口服,溴芬酸钠滴眼液滴眼。2周后复诊视力及黄斑水肿明显好转。
Microspherophakia (MSP) is a rare congenital zonular dysplasia characterized by increased anteroposterior lens thickness and reduced equatorial diameter, resembling a spherical shape. The related ocular manifestations of MSP include shallow anterior chamber, lens derived high myopia, ectopia lentis and secondary glaucoma. In the early stage of MSP, vision acuity may be improved by glasses. Cataract surgery is necessary once secondary lens dislocation and glaucoma occur. A 72-year-old male hospitalized patient was reported who complained increased blurred vision of his right eye for 2 years. In the past 2 years, the power of his binocular glasses was increased to -10 diopters without significant improvement in visual acuity. Lens dislocation and phakic insufficiency caused by MSP was diagnosed after he attending clinics at the Eye and ENT Hospital of Fudan University, Shanghai, China. Phacoemulsification with scleral sutured intraocular lens (IOL) implantation surgery and anterior vitrectomy were performed. One month after operation, macular edema was found at first follow-up. Compound pingdingmu granule was taken orally and Bromfenac sodium eye drops were applied three times a day. Two weeks later, visual acuity of his right eye was improved significantly and macular edema was eliminated dramatically.
目的:了解湿性老年性黄斑变性(age-related macular degeneration,AMD)患者自我感受负担(self-perceived burden,SPB)现状及其影响因素。方法:采用方便抽样法选取2021年1月至11月在中山大学中山眼科中心就诊的204例湿性AMD患者为研究对象,采用一般资料调查表、SPB量表、家庭支持自评量表、医学应对问卷对其进行测评。结果:患者SPB得分是(21.98±6.68)分,总体属于轻度SPB。湿性AMD患者的SPB水平与家庭支出(r=?0.326, P<0.001)和面对应对(r=?0.365, P<0.001)呈负相关,与回避(r=0.456, P<0.001)及屈服(r=0.310, P<0.001)应对方式呈正相关性。多重线性回归显示,独居、高龄、自费、双眼患病及采用回避应对的患者的SPB更高,而高文化水平、高家庭支持的患者SPB较轻。结论:湿性AMD患者有轻度SPB,但仍存在改善空间,医护工作者在工作中应重点关注高龄、文化程度低、家庭收入低、自费、独居、双眼患病及低视力的患者,及时进行心理疏导,减轻患者的SPB水平。
Objective: To understand the current status and influencing factors of self-preceived burden (SPB) in patients with wet age-related macular degeneration (AMD). Methods: 204 patiens with wet AMD who were treated in Zhongshan Ophthalmic Center, Sun Yat-sen University from January to November 2021 were enrolled as the study subjects with convenience sampling method. A general information questionnaire, SPB scale, family support self-assessment scale, and medical coping questionnaire were collected from the subjects for assessment. Results: The patient’s SPB score was 21.98±6.68, which is generally mild SPB. The SPB level of patients with wet AMD was negatively correlated with family support (r=-0.326, P<0.001) and coping (r=?0.365, P<0.001), and were positively correlated with avoidance (r= 0.456,P<0.001), and surrender (r=0.310, P<0.001) coping style. Multiple linear regression showed that the patients who lived alone, were elder and self-funded, had binoclur diseases and used avoidance coping, had higher SPB. While the patients with high education and family support had lower SPB. Conclusions: It is still needed to pay attention to the patients with AMD having mild SPB. Medical workers should focus on patients with elder age, low education level, low family income, self-funded, living alone, binocular disease and low vision in their work, and provide timely psychological counseling to reduce the SPB level of patients.
目的:评估内界膜翻瓣术联合空气填充在黄斑裂孔手术应用中的有效性。方法:回顾性分析中山眼科中心2016—2019年入院,因黄斑裂孔行内界膜翻瓣术联合空气填充术治疗的患者71例71眼,术后俯卧位1~3 d且随访达6个月以上。通过OCT判断患者黄斑裂孔闭合率,比较患者术前及术后最佳矫正视力(best corrected visual acuity, BCVA),通过MAIA微视野计检查评估术前与术后黄斑平均光敏度、黄斑完整指数、固视稳定性P1及P2等指标。结果:在总的71只眼中,有91.5%达到了黄斑裂孔的完全闭合。患者术前及术后BCVA提升(P<0.001),黄斑平均光敏度增加(P<0.000 1)、黄斑完整指数降低(P<0.000 1)、固视稳定性P1(P<0.000 1)及P2(P<0.001)均提升。结论:内界膜翻瓣术联合空气填充是治疗黄斑裂孔有效的手术方式,空气填充可有效地辅助黄斑裂孔愈合,可作为优先考虑的术中填充物,减轻患者因长时间保持面向下体位带来的痛苦。微视野计参数可用作评估黄斑结构及功能恢复的良好指标。
Objective: To assess the efficacy of the inverted internal limiting membrane (ILM) flap technique with air tamponade for macular holes (MHs). Methods: A retrospective analysis was conducted on 71 patients (71 eyes) who underwent inverted ILM flap surgery combined with air tamponade for macular holes at Zhongshan Ophthalmic Center from 2016 to 2019. Patients were positioned face down for 1-3 days postoperatively and followed up for more than 6 months. OCT was used to determine the closure rate of macular holes, and the best corrected visual acuity (BCVA) before and after surgery was compared. The MAIA microperimeter was used to assess the average macular sensitivity, macular integrity index, and fixation stability P1 and P2 before and after surgery. Results: Of the total 71 eyes, 91.5% achieved complete MH closure. The best corrected visual acuity (BCVA) significantly improved before and after surgery (P < 0.001), average macular sensitivity significantly increased (P < 0.000 1), macular integrity index significantly decreased (P < 0.000 1), and fixation stability P1 (P < 0.000 1) and P2 (P < 0.001) both significantly improved. Conclusions: Inverted ILM flap technique combined with air tamponade provides an effective approach for the management of MHs. The air tamponade should be considered as the preferred in MH surgeries, reducing the discomfort caused by prolonged face-down positioning. Parameters in microperimetry can serve as good indicators for assessing the recovery of macular structure and function.
年龄相关性黄斑变性(age-related macular degeneration, AMD)是老年人视力丧失的主要原因之一,其中新生血管性AMD (neovascular AMD, nAMD)以其进展迅速、严重损伤视力的特点,成为全球眼科研究的焦点。随着人口老龄化加剧,nAMD的疾病负担日益沉重,对其发病机制的深入研究和有效治疗策略的探 索迫在眉睫。近年来,高通量组学技术的蓬勃发展为解析nAMD复杂的分子病理机制提供了前所未有的机遇。基因组学、转录组学、蛋白质组学、代谢组学以及多组学整合分析,不仅有助于深入挖掘疾病相关的关键分子、通路和网络,也为发现新的生物标志物和潜在治疗靶点提供了新的视角。文章系统综述了近年来分子组学技术在nAMD研究中的最新进展,重点关注不同组学方法在各类生物样本研究中 的发现,分析多组学整合在揭示疾病机制和筛选生物标志物方面的优势,以期为该领域的未来研究提供参考。
Age-related macular degeneration (AMD) is one of the leading causes of vision loss in elderly population. Among its subtypes, neovascular AMD (nAMD) has become a global focus in ophthalmological research due to its rapid progression and severe vision impairment. With the acceleration of population aging, the disease burden of nAMD is increasingly heavy, making it urgent to conduct in-depth research on its pathogenesis and explore effective therapeutic strategies. In recent years, the rapid development of high-throughput omics technologies has provided unprecedented opportunities to decipher the complex molecular pathological mechanisms of nAMD. Genomics, transcriptomics, proteomics, metabolomics, and multi-omics integration analyses have not only helped to deeply explore disease-related key molecules, pathways, and networks but also provided new perspectives for discovering novel biomarkers and potential therapeutic targets. This review systematically summarizes the recent advances in molecular omics technologies in nAMD research, focusing on findings from different omics approaches across various biological samples, and analyzes the advantages of multi-omics integration in revealing disease mechanisms and screening biomarkers, aiming to provide references for future research in this field.
Background: The purpose is to investigate the relationship between full-thickness macular hole (MH) and retinal break (RB) and/or lattice degeneration.Methods: Patients diagnosed as full-thickness MH and referred to Dr. Lin Lu from January 2009 to December 2013 were evaluated. All patients underwent general ophthalmologic examinations, fundus examination and optical coherence tomography (OCT). The RB and/or lattice degeneration were recorded.Results: Totally 183 eyes of 167 patients were included. The sex ratio of men to women was 1:2.88. A total of 17 eyes were pseudophakic and 166 eyes were phakic. RB and/or lattice degeneration were found in 62 eyes (33.88%). The prevalence of RB and/or lattice degeneration was similar between men and women (P=0.344>0.05). There was no statistical diff erence between the pseudophakic eyes and phakic eyes (P=0.138>0.05). All of the RB and/or lattice degeneration were located near or anterior to the equator. The inferior quadrants and the vertical meridian were aff ected more often than the superior quadrants and the horizontal meridian.Conclusions: We identified a high incidence of RB/lattice degeneration in cases of full-thickness MH. Carefully examination of the peripheral retina and prophylactic treatment of RB and/or lattice degeneration are critical.
Background: The purpose is to investigate the relationship between full-thickness macular hole (MH) and retinal break (RB) and/or lattice degeneration.Methods: Patients diagnosed as full-thickness MH and referred to Dr. Lin Lu from January 2009 to December 2013 were evaluated. All patients underwent general ophthalmologic examinations, fundus examination and optical coherence tomography (OCT). The RB and/or lattice degeneration were recorded.Results: Totally 183 eyes of 167 patients were included. The sex ratio of men to women was 1:2.88. A total of 17 eyes were pseudophakic and 166 eyes were phakic. RB and/or lattice degeneration were found in 62 eyes (33.88%). The prevalence of RB and/or lattice degeneration was similar between men and women (P=0.344>0.05). There was no statistical diff erence between the pseudophakic eyes and phakic eyes (P=0.138>0.05). All of the RB and/or lattice degeneration were located near or anterior to the equator. The inferior quadrants and the vertical meridian were aff ected more often than the superior quadrants and the horizontal meridian.Conclusions: We identified a high incidence of RB/lattice degeneration in cases of full-thickness MH. Carefully examination of the peripheral retina and prophylactic treatment of RB and/or lattice degeneration are critical.
Diabetic macular edema (DME) is a major sight-threatening cause in diabetic patients. We review the long-term outcome of four approved pharmacotherapy for treating DME, including intravitreal injections of corticosteroids (dexamethasone implants and fl uocinolone acetonide inserts) and anti-vascular endothelial growth factor (VEGF) (ranibizumab and aflibercept). They all show superior ability to improve vision and reduce macular thickness, comparing with sham injections or macular focal/grid laser treatment. Anti-VEGF agents result in low incidence of severe ocular or systemic adverse effects, but glaucoma and cataract should be aware after intravitreal corticosteroids. Prompt treatment with these agents can lead to a better outcome.
Diabetic macular edema (DME) is a major sight-threatening cause in diabetic patients. We review the long-term outcome of four approved pharmacotherapy for treating DME, including intravitreal injections of corticosteroids (dexamethasone implants and fl uocinolone acetonide inserts) and anti-vascular endothelial growth factor (VEGF) (ranibizumab and aflibercept). They all show superior ability to improve vision and reduce macular thickness, comparing with sham injections or macular focal/grid laser treatment. Anti-VEGF agents result in low incidence of severe ocular or systemic adverse effects, but glaucoma and cataract should be aware after intravitreal corticosteroids. Prompt treatment with these agents can lead to a better outcome.