{"id":"https://openalex.org/A5111553458","orcid":null,"observed_orcids":[],"display_name":"Takahisa Koga","raw_author_names":["Koga, Takahisa","Takahisa Koga"],"full_name":"Koga, Takahisa","works_count":25,"cited_by_count":757,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":16,"i10_index":17},"ids":{"openalex":"https://openalex.org/A5111553458","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I22299242","ror":"https://ror.org/02kpeqv85","display_name":"Kyoto University","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},"years":[2002]},{"institution":{"id":"https://openalex.org/I39422238","ror":"https://ror.org/02mpq6x41","display_name":"University of Illinois Chicago","country_code":"US","type":"education","lineage":["https://openalex.org/I39422238"]},"years":[2009,2007]},{"institution":{"id":"https://openalex.org/I96036126","ror":"https://ror.org/02cgss904","display_name":"Kumamoto University","country_code":"JP","type":"education","lineage":["https://openalex.org/I96036126"]},"years":[2008,2007,2005,2004,2003,2002]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10250","display_name":"Glaucoma and retinal disorders","count":16,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10170","display_name":"Retinal Diseases and Treatments","count":5,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11131","display_name":"Proteoglycans and glycosaminoglycans research","count":5,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10563","display_name":"Corneal surgery and disorders","count":4,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10691","display_name":"Retinal Development and Disorders","count":4,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10250","display_name":"Glaucoma and retinal disorders","value":5.5e-05,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11480","display_name":"Connexins and lens biology","value":4.37e-05,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T13467","display_name":"Drug-Induced Ocular Toxicity","value":4.23e-05,"subfield":{"id":"https://openalex.org/subfields/2731","display_name":"Ophthalmology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11131","display_name":"Proteoglycans and glycosaminoglycans research","value":3.68e-05,"subfield":{"id":"https://openalex.org/subfields/1307","display_name":"Cell Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11828","display_name":"Corneal Surgery and Treatments","value":2.28e-05,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9231925010681152},{"id":"185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","score":0.5799710750579834},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.5126689672470093},{"id":"153911025","wikidata":"https://www.wikidata.org/wiki/Q7202","display_name":"Molecular biology","score":0.4867746829986572},{"id":"55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","score":0.47977858781814575}],"counts_by_year":[{"year":2002,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":7,"oa_works_count":1,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":2008,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":44},{"year":2013,"works_count":1,"oa_works_count":0,"cited_by_count":37},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":41},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":41},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":34},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":22},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":32},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":29},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":36},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":17},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":13}],"display_name_alternatives":["Koga, Takahisa","Takahisa Koga"],"block_key":"t koga","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111553458","updated_date":"2026-10-28T12:34:19","created_date":"2016-06-24T00:00:00"}
