title: [Introduction to the IX Retinological Symposium (author's transl)].
mesh_terms: D003226:Congresses as Topic; D049672:History, 19th Century; D049673:History, 20th Century; D009885:Ophthalmology / Q000266:history*; D009887:Ophthalmoscopy / Q000266:history; D011044:Poland; D012160:Retina / Q000033:anatomy & histology; D012425:Russia (Pre-1917); D009626:Terminology as Topic; D015022:Yugoslavia
vernacular_title: Słowo wprowadzajqce do IX sympozjonu retinologicznego.