[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-441104-105":59,"doc-detail-441104-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","on-slit-lamp-microscopy-theory-and-practice","On Slit-Lamp Microscopy - Theory and practice","","A scholarly ophthalmology paper presenting the theory and practical use of the slit-lamp microscope for examining the eye by focal illumination. It explains historical development from early focal illumination methods and the Gullstrand lamp, including optical design changes based on illumination principles. The work outlines biomicroscopic examination approaches for the anterior segment and further techniques for vitreous and fundus evaluation, emphasizing controlled light reflection and measurement 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","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-03","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the slit-lamp microscope used for in ophthalmological examination?","Question",{"text":112,"@type":113},"It is used to examine the whole eye in focal illumination, enabling observation of cornea and lens reflections while controlling the lighting conditions for clearer biomicroscopic assessment.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How did the illumination device evolve in the development of slit-lamp microscopy?",{"text":117,"@type":113},"The development moved from a Nernst-rod light source to low-voltage bulbs, and then to ray-path modifications such as Henker and Vogt’s approach to avoid projecting the filament onto the slit and to achieve a more homogeneous slit image.",{"name":119,"@type":110,"acceptedAnswer":120},"Why is precise positioning of the slit and condenser important?",{"text":121,"@type":113},"Small gaps between the slit and the condenser can create heterogeneity that upsets slit-lamp measurements, so the slit must be directly in front of the condensor to maintain uniform 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\nhttps://archive.org/details/onslitlampmicros0000unse  \nTheodor A.F.Schmidt,M.D.Privat Docent of Ophthalmology,University of Berne,Switzerland  \nOn Slit-Lamp Microscopy/Theory and practice  \nThis paper was first published in 《Documenta Ophthalmologica》  \n39,1:117-153,1975  \nReprinted with permission of Dr.W.Junk B.V.Publishers,The Hague  \nCONTENTS  \nA.History of the development of the slit lamp microscope .........  7  \nIntroduction..................  \nIllumination device.........:....Microscope.......................10Slit lamp microscope(Biomicroscope)..................  10Head rest.............................14  \nB.Basic principles of the slit lamp microscope...................16  \nC.Biomicroscopic methods of examination .....................19  \n1.Preparation of the slit lamp microscope ...................19  \n2.Examination of the anterior segment of the eye with the slitlamp microscope without accessories(Vogt)...............20Examination with a clear optical section..................20Examination in reflected light ..........................22Examination in indirect illumination.....................23Examination in the zone of specular reflexion ..............23Summary ..........................................23  \n3.Examination of the anterior segment of the eye with the slitlamp microscope and additional optical accessories ..........24Examination of the angle of the anterior chamber=gonioscopy 24Linear and depth measurements with the slit lamp microscope.26  \n4.Biomicroscopy of the vitreous and the fundus with slit illumina-tion ..............................................28Introduction........................................28Theory of the auxiliary concave lenses....................31Theory of the auxiliary convex lenses ....................31Auxiliary lenses for biomicroscopic examination of vitreous andfundus ..........................33Goldmann three mirror contact lens .....................35Indentation lenses ...................................36Pre-set Hruby lens .............38  \n·             +Pre-set Bayadi lens ...........…41Examination of vitreous and fundus41Summary....................44Acknowledgment ..............................  45Literature ..................................45  \n## A.HISTORY OF THE DEVELOPMENT OF THESLIT-LAMP MICROSCOPE\n\nIntroduction  \nOne of the oldest methods of ophthalmological examination is theexamination by focal illumination.  \n'There is no known substance which is absolutely transparent,although theaqueous of the anterior chamber among some other media,permits thetransmission of enough light so that no absorption or diffuse reflection oflight seems to take place.Normal ophthalmoscopic methods,however,haveshown that the cornea and the lens reflect diffuse light quite considerably.Inorder to apply these reflections for the observation of cornea and lens,onehas on the one hand to make the physical conditions of light reflection asadvantageous as possible and on the other hand to facilitate the observationof the reflected light.An intensive illumination with lateral or at leastoblique angle of incidence of the light is the best medium with anon-illuminated background.'(Gullstrand,1914).  \nThe primitive examination by focal illumination is described in a fewwords as follows:As perfect an image as possible is projected by a smallintense light source through a good,perhaps aplanatic,condensing lens of15-20 dioptres onto the cornea,the anterior chamber,and the lens.Anelectrical ophthalmoscope or a good pocket flashlight is the most suitablesource of light.Observation is carried out through a lens of 6x to 10x or abinocular loupe of 2.8x to 5x magnification.  \nIn the course of the years the slit-lamp microscope has become theinstrument for examination of the whole eye in focal illumination.  \nIllumination device  \nThe principle of the Gullstrand lamp(1911)","cbCaiv10axLD1lOR","https://ap.wps.com/l/cbCaiv10axLD1lOR","pdf",2831401,52,"English","# Contents\n## A. History of the development of the slit-lamp microscope\n## B. Basic principles of the slit lamp microscope\n## C. Biomicroscopic methods of examination\n## 1. Preparation of the slit lamp microscope\n## 2. Examination of the anterior segment without accessories (Vogt)\n## 3. Examination with additional optical accessories\n## 4. Biomicroscopy of the vitreous and the fundus with slit illumination","[{\"question\":\"What is the slit-lamp microscope used for in ophthalmological examination?\",\"answer\":\"It is used to examine the whole eye in focal illumination, enabling observation of cornea and lens reflections while controlling the lighting conditions for clearer biomicroscopic assessment.\"},{\"question\":\"How did the illumination device evolve in the development of slit-lamp microscopy?\",\"answer\":\"The development moved from a Nernst-rod light source to low-voltage bulbs, and then to ray-path modifications such as Henker and Vogt’s approach to avoid projecting the filament onto the slit and to achieve a more homogeneous slit image.\"},{\"question\":\"Why is precise positioning of the slit and condenser important?\",\"answer\":\"Small gaps between the slit and the condenser can create heterogeneity that upsets slit-lamp measurements, so the slit must be directly in front of the condensor to maintain uniform illumination.\"}]","On Slit-Lamp Microscopy - Theory and practice | PDF",1790694669,131]