2020
Ophthalmic Medication Expenditures and Out-of-Pocket Spending An Analysis of United States Prescriptions from 2007 through 2016
Chen EM, Kombo N, Teng CC, Mruthyunjaya P, Nwanyanwu K, Parikh R. Ophthalmic Medication Expenditures and Out-of-Pocket Spending An Analysis of United States Prescriptions from 2007 through 2016. Ophthalmology 2020, 127: 1292-1302. PMID: 32359935, PMCID: PMC7508869, DOI: 10.1016/j.ophtha.2020.04.037.Peer-Reviewed Original ResearchConceptsOphthalmic medicationsMedication expendituresOOP expenditureLongitudinal cohort studyOverall drug expendituresUnited States populationPrescription drug spendingGlaucoma medicationsCohort studyMedication useDry eyePrescription usePrescription expendituresPrescription medicationsOOP expensesMedicationsCopayment assistancePocket expenditureOOP spendingDrug expendituresPocket spendingDrug spendingIndirect costsMEPS participantsLinear regression
2019
Barriers to and Facilitators of Diabetic Retinopathy Screening Utilization in a High-Risk Population
Fairless E, Nwanyanwu K. Barriers to and Facilitators of Diabetic Retinopathy Screening Utilization in a High-Risk Population. Journal Of Racial And Ethnic Health Disparities 2019, 6: 1244-1249. PMID: 31463812, PMCID: PMC6880869, DOI: 10.1007/s40615-019-00627-3.Peer-Reviewed Original ResearchConceptsHigh-risk populationEye examDiabetic retinopathyVision lossQualified community health centersCommunity health centersLow socioeconomic statusUse of screeningBackgroundDiabetic retinopathyMedian ageEye careHealth centersClinic experienceDiabetesPatientsVision statusRetinopathyConclusionsThe factorsMethodsQualitative interviewsVisual symptomsSocioeconomic statusHealth insuranceImportant facilitatorsExamParticipants
2018
Spontaneous Rupture of an Iris Stromal Cyst
Hall LB, Nwanyanwu K. Spontaneous Rupture of an Iris Stromal Cyst. Ophthalmology 2018, 125: 30. PMID: 29268865, DOI: 10.1016/j.ophtha.2017.09.005.Peer-Reviewed Original Research
2016
Ocular Syphilis Presenting as Bilateral Acute Retinal Necrosis in an Immunocompetent Host.
Hussnain SA, Ketner S, Coady PA, Kombo N, Nwanyanwu K. Ocular Syphilis Presenting as Bilateral Acute Retinal Necrosis in an Immunocompetent Host. Connecticut Medicine 2016, 80: 533-536. PMID: 29772137.Peer-Reviewed Original ResearchMeSH KeywordsEye Infections, BacterialHumansImmunocompetenceMaleMiddle AgedNeurosyphilisRetinal Necrosis Syndrome, AcuteConceptsBilateral acute retinal necrosisAcute retinal necrosisOcular syphilisRetinal necrosisCases of syphilisOphthalmic testingOcular inflammationGreat masqueraderImmunocompetent hostsDiagnostic dilemmaClinical signsHigh indexSyphilisNecrosisSignsInflammationPatientsPresentingOphthalmologistsSymptomsCliniciansSuspicion
2014
Reduced Fluorescein Angiography and Fundus Photography Use in the Management of Neovascular Macular Degeneration and Macular Edema During the Past DecadeImaging Tests for Macular Diseases
Schneider EW, Mruthyunjaya P, Talwar N, Nwanyanwu K, Nan B, Stein JD. Reduced Fluorescein Angiography and Fundus Photography Use in the Management of Neovascular Macular Degeneration and Macular Edema During the Past DecadeImaging Tests for Macular Diseases. Investigative Ophthalmology & Visual Science 2014, 55: 542-549. PMID: 24346174, PMCID: PMC3907135, DOI: 10.1167/iovs.13-13034.Peer-Reviewed Original ResearchConceptsNeovascular age-related macular degenerationProportion of patientsMacular edemaFluorescein angiographyFundus photographyOptical coherence tomographyMacular degenerationDiagnostic testingIncident neovascular age-related macular degenerationAge-related macular degenerationRepeated-measures logistic regressionNeovascular macular degenerationTraditional diagnostic testingUse of OCT
2013
Smudge in My Vision
Nwanyanwu KH, Lim JI. Smudge in My Vision. JAMA Ophthalmology 2013, 131: 1637-1638. PMID: 24337560, DOI: 10.1001/jamaophthalmol.2013.7410.Peer-Reviewed Original ResearchPredicting Development of Proliferative Diabetic Retinopathy
Nwanyanwu K, Talwar N, Gardner TW, Wrobel JS, Herman WH, Stein JD. Predicting Development of Proliferative Diabetic Retinopathy. Diabetes Care 2013, 36: 1562-1568. PMID: 23275374, PMCID: PMC3661803, DOI: 10.2337/dc12-0790.Peer-Reviewed Original ResearchMeSH KeywordsAgedDiabetic RetinopathyFemaleHumansMaleMiddle AgedMultivariate AnalysisRetrospective StudiesConceptsNonproliferative diabetic retinopathyDiabetic retinopathy progressionRetinopathy progressionDiabetic retinopathyMultivariable Cox regression analysisProgression risk scoreHigh-risk patientsRetrospective cohort analysisCox regression analysisProliferative diabetic retinopathyFive-year probabilityLow-risk individualsCare recipient ageAdvanced diseaseRecipient ageDiabetes mellitusGlycemic controlClaims databaseVision lossDisease progressionCohort analysisRisk scoreManaged-care networkPredicting DevelopmentRetinopathyCost-Effectiveness of Various Interventions for Newly Diagnosed Diabetic Macular Edema
Stein JD, Newman-Casey PA, Kim DD, Nwanyanwu KH, Johnson MW, Hutton DW. Cost-Effectiveness of Various Interventions for Newly Diagnosed Diabetic Macular Edema. Ophthalmology 2013, 120: 1835-1842. PMID: 23642372, PMCID: PMC3737388, DOI: 10.1016/j.ophtha.2013.02.002.Peer-Reviewed Original ResearchMeSH KeywordsAngiogenesis InhibitorsAntibodies, Monoclonal, HumanizedBevacizumabCombined Modality TherapyCost-Benefit AnalysisDiabetic RetinopathyDiagnostic Techniques, OphthalmologicalDrug CostsFinancing, PersonalGlucocorticoidsHealth Care CostsHumansIntravitreal InjectionsLaser CoagulationMacular EdemaMarkov ChainsMiddle AgedQuality-Adjusted Life YearsRanibizumabTriamcinolone AcetonideVascular Endothelial Growth Factor AConceptsQuality-adjusted life yearsProbabilistic sensitivity analysesTime horizonSensitivity analysisCost-effectiveness analysisWTP valuesCost-effective treatment optionLife yearsIncremental costMedicare fee scheduleWTPHypothetical cohortFee scheduleCSDMECostHorizonFinancialMarkov modelWillingnessOptions
2012
Presumed choroidal metastasis secondary to clear cell sarcoma of the right knee
Nwanyanwu KH, Comer G, Demirci H. Presumed choroidal metastasis secondary to clear cell sarcoma of the right knee. International Ophthalmology 2012, 33: 163-165. PMID: 23053771, DOI: 10.1007/s10792-012-9642-1.Peer-Reviewed Original ResearchConceptsCell sarcomaClear cell sarcomaChoroidal metastasisLeft eyeRight kneeAmelanotic choroidal lesionsMultiple systemic metastasesTime of presentationChoroidal lesionsDay historyFundus examinationSystemic metastasesSubretinal fluidVisual acuitySarcomaMetastasisAponeurosisTendonEyesKneePatientsAcuityChoroidLesionsWomen