Alzheimer’s disease (AD) is a degenerative disease of the central nervous system that occurs in old age or early old age. It is characterized by progressive cognitive dysfunction. With the world population aging, AD has become a global public health problem. The development of a more sensitive, convenient, and economic screening technology for AD is urgently needed. The eye movement function is closely related to cognitive function. Moreover, eye movement examination has advantages including non-invasiveness, low cost, and short examination time. Researches on the correlation between abnormal eye movement and cognitive dysfunction can help to develop a simple and easy-to-use screening tool for cognitive dysfunction. With the development of artificial intelligence technology, the dominant feature extraction and computing capabilities of machine learning algorithms have a significant advantage in processing eye movement inspection results. This article reviews the correlation between AD and eye movement abnormalities aiming to provide the research prospects of early screening technology development for cognitive dysfunction based on abnormal eye movement with the application of machine learning models.

In recent years, with the acceleration of digitalization and informatization in medical field, artificial intelligence (AI) is more and more widely applied, especially in ophthalmology. Infants are in the critical period of visual development, during which eye diseases can lead to irreversible visual impairment and bring heavy burden to family and society. Due to the particularity of infants and the shortage of pediatric ophthalmologists, it is challenging to carry out large-scale screening for eye diseases of infants. According to the latest studies, AI has been studied and applied in the fields of congenital cataract, congenital glaucoma, strabismus, amblyopia, retinopathy of prematurity, and evaluation of visual function, and it has achieved remarkable performance in the early screening, diagnosis stage and treatment suggestions, solving many clinical difficulties and pain points effectively. However, AI for infantile ophthalmology is not as developed as for adult ophthalmology, so it needs further exploration and development.

Neurotrophic keratopathy is a disease related to degenerative changes in corneal nerves, resulting in impaired sensory and nutritive functions of corneal nerves. This leads to corneal epithelial defects, corneal ulcers, and corneal perforation. Currently, the main treatment modalities include pharmacotherapy, non-surgical interventions, and surgical treatment. However, drug therapy and non-surgical interventions often yield unsatisfactory results for severe neurotrophic keratopathy patients. Performing corneal transplantation in patients with unrecovered corneal sensation may result in persistent epithelial defect. Therefore, the restoration of corneal sensation is a crucial prerequisite for visual rehabilitation. Corneal neurotization emerges as an important and effective therapeutic approach for severe cases of neurotrophic keratopathy, aiming to restore corneal sensation and enhance corneal transparency. The procedure involves transplanting nerves from a donor with normal sensory function to the paralyzed sub-Tenon perilimbal space, allowing nerve endings to regenerate into the corneal stroma and restoring corneal sensory function. With continuous improvements in the technique of corneal neurotization, its favorable postoperative outcomes and advantages are becoming increasingly evident. This article, based on the team's experience in corneal neurotization, elaborates on the treatment modalities for neurotrophic keratopathy and the application and prospects of various surgical techniques in corneal neurotization.

Objective: To systematically analyze the related studies on intervention schemes for patients with visual field defects after stroke, and to identify, summarize, and summarize the specific content, outcome indicators, and intervention effects, thereby providing a reference for clinical practice and future research in this field. Methods: Utilizing the scoping review method, a systematic search was conducted in 9 databases: CNKI, CQVIP, Wanfang Database, China Biomedical Literature Database, PubMed, Web of Science, Embase, CINAHL and the Cochrane Library. The search encompassed the period from the inception of each database to April 10, 2024. The selected literature was subsequrently screened, summarized, and analyzed. Results: A total of 12 articles were finally included, summarizing the intervention methods and outcome indicators for patients with visual field defects after stroke. The intervention methods comprised alternative intervention, compensatory intervention, and rehabilitative interventions. Outcome indicators include daily living activities, daily living extended activities, reading performance and visual field examination. Conclusion: Current intervention schemes for patients with visual field defects after stroke exhibit diverse content, charaterized by low evidence quality and inconsistent outcome indicators. Further high-quality research is needed to explore optimal training plans and standardize the outcome indicators. In the future, continuous improvement and optimization of rehabilitation strategies should be carried out to establish the best multidisciplinary framework and formulate scientific, systematic and individualized plans.

Glaucoma is the world's first irreversible blinding eye disease, characterized by degenerative changes in retinal ganglion cells (RGCs), which have a significant impact on the global economy and health. The molecular and biological mechanisms of its pathological changes are still unclear. At present, glaucoma surgery and drug therapy are still limited to controlling the intraocular pressure in the normal range. Three-dimensional culture technology can enable cells to form a certain spatial structure in vitro, which is conducive to cell-cell and cell-environment interactions. Compared with traditional two-dimensional culture, three-dimensional culture technology is closer to the physiological environment of cells in vivo, which is of great significance for the study of pathophysiological changes of diseases and high-throughput drug screening. This review discusses the application of trabecular mesh and three-dimensional culture of retinal cells in the basic research of glaucoma, aiming to provide new ideas for further exploring the pathophysiological mechanism of glaucoma.

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, more 

foundational and prospective clinical studies will provide high-quality evidence on DME risk factors and treatments.

Objective: To investigate the advances and trends of heat shock proteins (HSP) in ophthalmology published from  2003 to 2023. Methods: The Web of Science database was used to retrieve the literature on heat shock proteins in ophthalmology published from January 1, 2003 to December 26, 2023. Bibliometric methods and VOSviewer and CiteSpaces software were used to analyze and visualize data, including publication count, countries, organizations, journals, authors, keywords and subject categories. Results: A total of 1079 publications related to HSP in ophthalmology were included, and the overall number of publications was fluctuating. The United States (n =394) was the leading contributor among countries. Investigative Ophthalmology & Visual Science (n =80) was the journal with the largest number of publications. The pathogenesis of glaucoma, the pathogenesis of cataract and the mechanism of ophthalmic diseases at the genetic level of HSP were identified as the research hotspots. Glaucoma, cholesterol, and molecular chaperones were identified as frontier research topics. Biochemistry & molecular biology, multidisciplinary materials science, and cell biology have the highest betweenness centrality values of 0.60, 0.28, and 0.26, respectively. Multidisciplinary chemistry (burst years: 2017 to 2023; strength = 6.3) was a subject involved in the research frontier of this field. Conclusion: Research on heat shock proteins in ophthalmology mainly focuses on revealing the genetic background of the diseases and exploring the molecular mechanisms and therapeutic applications in glaucoma and cataracts. The advance in the study on molecular mechanisms in this field depends on multidisciplinary collaboration.

Iron ions are essential for normal metabolism, DNA synthesis, and cellular repair in corneal cells. Nevertheless, an excess of these ions can disrupt iron homeostasis, leading to cellular toxicity, damage, and death. Keratoconus, the most prevalent ectatic corneal disorder, is often marked by the Fleischer ring, which indicates an imbalance in iron homeostasis. A review of early studies on keratoconus and iron metabolism suggests that this imbalance may be a potential pathogenic mechanism contributing to the onset and progression of the disease. This article aims to provide a comprehensive overview of normal iron metabolism in the human body and cornea, highlighting the evidence of iron homeostasis imbalance in keratoconus. It also explores potential therapeutic strategies focused on maintaining iron homeostasis, thereby offering novel insights into the treatment of ectatic eye diseases. 

Objective: To analyze the application and testing of non-surgical routine blood test items in clinical diagnosis and treatment in a top-tier ophthalmic hospital over the past five years, providing ophthalmologists with insights into the overview of laboratory-assisted diagnosis, laboratory project management in specialized hospitals, and the basis for launching new projects. Methods: Relevant test records of 22,453 samples (totaling 94,081 test items) from 12,866 outpatient patients who applied for blood tests at the Zhongshan Ophthalmic Center of Sun Yat-sen University from January 1, 2018, to December 31, 2022, were retrieved from the medical laboratory information management system. The departments applying for tests and specialist physicians were divided into 10 subspecialties according to the recommendations of the Ophthalmology Branch of the Chinese Medical Association. Statistical analysis was performed on disease diagnosis and test items, and the results were described in the form of text, bar graphs, and line graphs. Results: Among the 12,866 outpatient patients who applied for blood tests over the five-year period, 6,356 (49.4%) were male and 6,510 (50.6%) were female. Based on the classification of first-visit ophthalmic diseases, the top three were ophthalmic plastic surgery/ocular tumor diseases (5,214 cases, 40.5%), fundus diseases (3,487 cases, 27.1%), and corneal diseases (1,711 cases, 13.3%). The number of samples applied for testing increased from 3,163 in 2018 to 5,903 in 2022, showing an overall upward trend. From the perspective of specialist physicians applying for tests, ophthalmic plastic surgery/orbital disease specialists had the highest number of applications, with 6,751 (30.1%), among which autoimmune disease testing accounted for the highest proportion, at 49.1%, and thyroid disease-related testing accounted for 41.9%. The number of applications from ophthalmic immunology specialists was 4,214 (18.8%), with autoimmune disease testing accounting for 55.7% and infectious disease testing accounting for 32.5%. The number of applications from fundus disease specialists was 3,629 (16.2%), with autoimmune disease testing and infectious disease testing accounting for 47.8% and 39.6%, respectively. The number of applications from corneal disease specialists was 1,436 (6.4%), with allergic disease testing accounting for 41.2%. Since multiple tests could be performed on a single application, the ophthalmic plastic surgery/orbital disease subspecialty had the highest total number of tests applied for, with 33,513 tests, of which thyroid disease testing accounted for 65.0%. The corneal disease subspecialty applied for 16,482 tests, with allergic disease testing accounting for 83.4%. The fundus disease subspecialty and ophthalmic immunology subspecialty respectively applied for 8,794 and 8,047 tests, both primarily focused on autoimmune disease testing, accounting for 42.5% and 40.4%, respectively. Conclusions: The number of applications for non-surgical routine test items in ophthalmic specialized hospitals is significantly unevenly distributed among various subspecialties, and the composition of the items is influenced by the characteristics of diseases in each subspecialty. Ophthalmic laboratories should strengthen the promotion and management of non-surgical routine test items in a targeted manner.

Objective: To investigate the distribution characteristics of corneal refractive power (CRP), and analyze the correlation between corneal refractive power and ocular biometric parameters in cataract patients. Methods: A retrospective cross-sectional study was conducted on 2,3035 eyes of cataract patients over 40 years old, who visited Fuzhou Eye Hospital during the period between March 2019 and July 2022. The subjects' examination results of axial length (AL), corneal refractive power (CRP), anterior chamber depth (ACD), lens thickness (LT), horizontal corneal diameter (WTW), central corneal thickness (CCT) were measured by OA-2000. Spearman correlation thermograms of bilological parameters and age for each eyes were worked out. The plot scatter fitting plots of CRP and AL, CRP and WTW were made. Spearman correlation analysis was made among CRP, above-mentioned parameters and age. Linear relationships of the segmented data were analyzed with Pearson and linear regression analysis. Results: In the cataract patients, CRP was (44.36 ± 1.52) D. There was a non-linear correlation between CRP and AL in the total data. However, there was a linear relationship in the segmented data. When AL ≤ 25.06 mm, CRP was negatively linearly correlated with AL (R² =0.397, P<0.001). When AL>25.06 mm, CRP was weakly positively correlated with AL (R² =0.045, P<0.001). Regardless of the length of AL, CRP was negatively correlated with WTW and CCT. There was also a nonlinear relationship between CRP and WTW in the total data. But there was a linear correlation in the segmented data.When 10.52 mm ≤ WTW ≤ 12.46 mm, the negative linear correlation was found between CRP and WTW (R² =0.149, P<0.001), while there was negative correlation among CRP, AL, ACD, and CCT. Conclusion: There is a non-linear correlation among CRP, AL and WTW. To optimize the calculation of intraocular lens (IOL) refractive power with CRP, it is necessary to consider the correlation between AL, WTW, and CRP.