Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2167193438', 'doi': 'https://doi.org/10.1016/s0161-6420(94)31282-6', 'title': 'Krupin Eye Valve with Disk for Filtration Surgery', 'display_name': 'Krupin Eye Valve with Disk for Filtration Surgery', 'publication_year': 1994, 'publication_date': '1994-04-01', 'ids': {'openalex': 'https://openalex.org/W2167193438', 'doi': 'https://doi.org/10.1016/s0161-6420(94)31282-6', 'mag': '2167193438', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/8152759'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0161-6420(94)31282-6', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S207341048', 'display_name': 'Ophthalmology', 'issn_l': '0161-6420', 'issn': ['0161-6420', '1549-4713'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5081127627', 'display_name': 'Theodore Krupin', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Theodore Krupin', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5111547110', 'display_name': 'Lisa F. Rosenberg', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Lisa F. Rosenberg', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5061944349', 'display_name': 'Jon M. Ruderman', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Jon M. Ruderman', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5033254607', 'display_name': 'Marianne E. Feitl', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Marianne E. Feitl', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5029483652', 'display_name': 'Michael A. Kass', 'orcid': 'https://orcid.org/0000-0003-0862-5956'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Michael A. Kass', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5048202800', 'display_name': 'Allan E. Kolker', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Allan E. Kolker', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5033711503', 'display_name': 'Martin B. Wax', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Martin B. Wax', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5039302002', 'display_name': 'Carl B. Camras', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Carl B. Camras', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5082809595', 'display_name': 'Jeffrey M. Liebmann', 'orcid': 'https://orcid.org/0000-0002-5663-0533'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Jeffrey M. Liebmann', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5062127850', 'display_name': 'Robert Ritch', 'orcid': 'https://orcid.org/0000-0002-9368-7547'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Robert Ritch', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5110082191', 'display_name': 'Steven M. Podos', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Steven M. Podos', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5012671046', 'display_name': 'Janet B. Serle', 'orcid': 'https://orcid.org/0000-0002-0302-2438'}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Janet B. Serle', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5109154791', 'display_name': 'Robert A. Schumer', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Robert A. Schumer', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5111729599', 'display_name': 'Paul L. Kaufman', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Paul L. Kaufman', 'raw_affiliation_strings': [], 'affiliations': []}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5055607066', 'display_name': 'Todd W. Perkins', 'orcid': None}, 'institutions': [], 'countries': [], 'is_corresponding': False, 'raw_author_name': 'Todd W. Perkins', 'raw_affiliation_strings': [], 'affiliations': []}], 'institution_assertions': [], 'countries_distinct_count': 0, 'institutions_distinct_count': 0, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 4590, 'currency': 'USD', 'value_usd': 4590, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 6.225, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 74, 'citation_normalized_percentile': {'value': 0.939049, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 94, 'max': 95}, 'biblio': {'volume': '101', 'issue': '4', 'first_page': '651', 'last_page': '658'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10250', 'display_name': 'Glaucoma and retinal disorders', 'score': 1.0, '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'}}, 'topics': [{'id': 'https://openalex.org/T10250', 'display_name': 'Glaucoma and retinal disorders', 'score': 1.0, '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/T11377', 'display_name': 'Retinal and Macular Surgery', 'score': 0.9998, '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/T10563', 'display_name': 'Corneal surgery and disorders', 'score': 0.9994, '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'}}], 'keywords': [{'id': 'https://openalex.org/keywords/glaucoma-valve', 'display_name': 'Glaucoma valve', 'score': 0.70124096}], 'concepts': [{'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.9277547}, {'id': 'https://openalex.org/C2781092963', 'wikidata': 'https://www.wikidata.org/wiki/Q650050', 'display_name': 'Intraocular pressure', 'level': 2, 'score': 0.7634783}, {'id': 'https://openalex.org/C2780819948', 'wikidata': 'https://www.wikidata.org/wiki/Q3117462', 'display_name': 'Glaucoma valve', 'level': 3, 'score': 0.70124096}, {'id': 'https://openalex.org/C2778527774', 'wikidata': 'https://www.wikidata.org/wiki/Q159701', 'display_name': 'Glaucoma', 'level': 2, 'score': 0.68929946}, {'id': 'https://openalex.org/C118487528', 'wikidata': 'https://www.wikidata.org/wiki/Q161437', 'display_name': 'Ophthalmology', 'level': 1, 'score': 0.57072717}, {'id': 'https://openalex.org/C2781411149', 'wikidata': 'https://www.wikidata.org/wiki/Q486975', 'display_name': 'Implant', 'level': 2, 'score': 0.54159635}, {'id': 'https://openalex.org/C141071460', 'wikidata': 'https://www.wikidata.org/wiki/Q40821', 'display_name': 'Surgery', 'level': 1, 'score': 0.5258021}, {'id': 'https://openalex.org/C2777235844', 'wikidata': 'https://www.wikidata.org/wiki/Q1294912', 'display_name': 'Endophthalmitis', 'level': 2, 'score': 0.48727906}, {'id': 'https://openalex.org/C2776148792', 'wikidata': 'https://www.wikidata.org/wiki/Q3041498', 'display_name': 'Eye disease', 'level': 2, 'score': 0.4327272}], 'mesh': [{'descriptor_ui': 'D005901', 'descriptor_name': 'Glaucoma', 'qualifier_ui': 'Q000601', 'qualifier_name': 'surgery', 'is_major_topic': True}, {'descriptor_ui': 'D019736', 'descriptor_name': 'Prostheses and Implants', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D012826', 'descriptor_name': 'Silicone Elastomers', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D014130', 'descriptor_name': 'Trabeculectomy', 'qualifier_ui': 'Q000379', 'qualifier_name': 'methods', 'is_major_topic': True}, {'descriptor_ui': 'D005260', 'descriptor_name': 'Female', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005500', 'descriptor_name': 'Follow-Up Studies', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D005901', 'descriptor_name': 'Glaucoma', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D006801', 'descriptor_name': 'Humans', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007429', 'descriptor_name': 'Intraocular Pressure', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008297', 'descriptor_name': 'Male', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008875', 'descriptor_name': 'Middle Aged', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011183', 'descriptor_name': 'Postoperative Complications', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011379', 'descriptor_name': 'Prognosis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014130', 'descriptor_name': 'Trabeculectomy', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D014792', 'descriptor_name': 'Visual Acuity', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1016/s0161-6420(94)31282-6', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S207341048', 'display_name': 'Ophthalmology', 'issn_l': '0161-6420', 'issn': ['0161-6420', '1549-4713'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/8152759', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 25, 'referenced_works': ['https://openalex.org/W1973162666', 'https://openalex.org/W1986004242', 'https://openalex.org/W1987806908', 'https://openalex.org/W1989215939', 'https://openalex.org/W1997573440', 'https://openalex.org/W2003158987', 'https://openalex.org/W2003219900', 'https://openalex.org/W2004835538', 'https://openalex.org/W2011755405', 'https://openalex.org/W2029997539', 'https://openalex.org/W2045986466', 'https://openalex.org/W2047382931', 'https://openalex.org/W2123960596', 'https://openalex.org/W2143453366', 'https://openalex.org/W2161082285', 'https://openalex.org/W2164755461', 'https://openalex.org/W2284184403', 'https://openalex.org/W2399829271', 'https://openalex.org/W2415310112', 'https://openalex.org/W2474295853', 'https://openalex.org/W272617585', 'https://openalex.org/W4251798398', 'https://openalex.org/W4251855411', 'https://openalex.org/W4285719527', 'https://openalex.org/W81263109'], 'related_works': ['https://openalex.org/W74963343', 'https://openalex.org/W4387094936', 'https://openalex.org/W2948409602', 'https://openalex.org/W2793996166', 'https://openalex.org/W23766661', 'https://openalex.org/W2239285033', 'https://openalex.org/W2109488902', 'https://openalex.org/W2078535487', 'https://openalex.org/W2056344052', 'https://openalex.org/W2022378535'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2167193438', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2023, 'cited_by_count': 2}, {'year': 2022, 'cited_by_count': 2}, {'year': 2019, 'cited_by_count': 2}, {'year': 2017, 'cited_by_count': 3}, {'year': 2016, 'cited_by_count': 2}, {'year': 2015, 'cited_by_count': 2}, {'year': 2014, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 2}], 'updated_date': '2025-01-05T11:15:36.993790', 'created_date': '2016-06-24'}