biostudies-literatureYoo KNEI NIH HHSNational Eye InstituteResearch to Prevent BlindnessNational Institutes of Health169-176https://www.ebi.ac.uk/biostudies/studies/S-EPMC9978040biostudies-literatureUnknown6(2)<h4>Purpose</h4>To assess rates of diagnostic conversion from anatomical narrow angle (ANA) to primary angle-closure glaucoma (PACG) in the United States and identify factors associated with diagnostic conversion.<h4>Design</h4>Retrospective case-control study.<h4>Participants</h4>Patients diagnosed with ANA between the years 2007 and 2019 were identified based on International Classification of Diseases (ICD) codes in the Optum Clinformatics Data Mart Database. Inclusion was limited to newly diagnosed ANA, defined as the following: (1) continuous enrollment during a 2-year look back period and 6-year study period from index (first) date of ANA diagnosis; (2) diagnosis by an ophthalmologist or optometrist and record of gonioscopy; and (3) no history of intraocular pressure (IOP)-lowering dOphthalmology. GlaucomaRates and Patterns of Diagnostic Conversion from Anatomical Narrow Angle to Primary Angle-Closure Glaucoma in the United States.PMC9978040K23 EY029763Toy BZhou SBurkemper BSong BWong BXu BApolo GLung KCamp AYoo KfalseRates and Patterns of Diagnostic Conversion from Anatomical Narrow Angle to Primary Angle-Closure Glaucoma in the United States.<h4>Purpose</h4>To assess rates of diagnostic conversion from anatomical narrow angle (ANA) to primary angle-closure glaucoma (PACG) in the United States and identify factors associated with diagnostic conversion.<h4>Design</h4>Retrospective case-control study.<h4>Participants</h4>Patients diagnosed with ANA between the years 2007 and 2019 were identified based on International Classification of Diseases (ICD) codes in the Optum Clinformatics Data Mart Database. Inclusion was limited to newly diagnosed ANA, defined as the following: (1) continuous enrollment during a 2-year look back period and 6-year study period from index (first) date of ANA diagnosis; (2) diagnosis by an ophthalmologist or optometrist and record of gonioscopy; and (3) no history of intraocular pressure (IOP)-lowering d2023-01-01T00:00:00Z2023 Mar-Apr2025-04-03T23:50:14.746Z2025-04-03T23:50:14.746ZS-EPMC99780403605853610.1016/j.ogla.2022.08.016