At the beginning of the new year when China and Beijing were hidden in winter, the second ophthalmic equipment clinical application study class held by the Department of Ophthalmology of the First Medical Center was started On January 4^th.

In his opening remarks, Prof. Li Zhaohui, chairman of the conference and director of the Department of Ophthalmology of the First Medical Center, said that this conference is a rare academic one dedicated to ophthalmic equipment in the country so far. There are many kinds of ophthalmic equipment. How to use it well and correctly analyze the inspection results, so as to better improve the clinical diagnosis and treatment ability of ophthalmology, is a real problem currently faced.

The conference is divided into four periods according to the characteristics of ophthalmic equipment: ocular surface cornea period, refractive cataract period, fundus disease period and equipment practical skills period. The lecturers included not only domestic clinical celebrities, academic elites, but also engineers from manufacturers. Everyone conducted a comprehensive interpretation and in-depth discussion around the basic application and latest progress of ophthalmic examination equipment. In the Wetlab area, unlimited pig eye operation and experience use of phacoemulsification machine enable students to combine knowledge with practical operation, which benefits everyone a lot.

Confocal microscopy uses laser light source-assisted tomographic scanning technology to provide great help for the diagnosis of difficult corneal endothelial lesions. Professor Hong Jing from Peking University Third Hospital described the differentiation about the cellular morphology of endothelial lesions (eagle eye cells, Descemet's warts, etc.) under confocal microscope by showing confocal pictures of typical cases such as FUCHS corneal endothelial dystrophy, posterior pleomorphic corneal endothelial dystrophy and corneal endotheliitis. She also discovered cell size and cell count methods and diagnosis and treatment ideas, and put forward a new strategy for the diagnosis of corneal endothelial decompensation by combining aqueous humor virus detection and confocal microscopy, which provides a new idea for the analysis of the causes of corneal edema after cataract surgery.

With the popularity of electronic products and the stressful daily work, dry eye brings great trouble to many people. Professor Wang Liqiang from the First Medical Center systematically expounded dry eye from the epidemiology, definition, pathogenic factors and traditional inspection methods, and described the diagnosis process of dry eye in detail combined with the DEWS II dry eye classification. Subsequently, the advantages of the ocular surface comprehensive analyzer were explained through specific examples, including objective recording of tear film break-up time, quantitative determination of tear river height, a comprehensive meibomian gland analysis system, and objective analysis of the tear film lipid layer. , redness analysis, quantification of corneal epithelial defects, etc., so as to systematically evaluate and give personalized analysis and treatment.

How to determine the type of clinical study design? Professor Yin Weijing, director of the editorial department of "Chinese Journal of Experimental Ophthalmology", pointed out that the type of clinical research design and the correct determination of research purposes are to determine the rationality and integrity of biomedical design methods, sample size calculation methods, statistical methods, and selection of research outcome indicators. In order to deepen the understanding of different design types, Professor Yin also explained how to distinguish and determine the types of research designs and common problems when publishing clinical articles based on actual cases, providing ideas and guidance for clinicians to conduct clinical experiments more rigorously, efficiently and accurately

In the first lesson of the new year, the lecturer taught everything and the audience studied hard. They gave a detailed lecture on the progress of ophthalmology, and solved the difficult problems. The equipment application meeting held this time allowed online and offline ophthalmology colleagues to feel the charm of academics.