A5025964583- Glaucoma and retinal disorders
- Ophthalmology and Visual Impairment Studies
- Intraocular Surgery and Lenses
- Retinal Diseases and Treatments
- Retinal Imaging and Analysis
- Corneal surgery and disorders
- Respiratory Support and Mechanisms
- Pediatric Pain Management Techniques
- Retinal and Optic Conditions
- Healthcare Policy and Management
- Ophthalmology and Visual Health Research
- Ocular Infections and Treatments
- Health Systems, Economic Evaluations, Quality of Life
- Neonatal Respiratory Health Research
- Treatment of Major Depression
- Tryptophan and brain disorders
- Healthcare Systems and Reforms
- Intensive Care Unit Cognitive Disorders
- Global Health Care Issues
- Blood Pressure and Hypertension Studies
- Cancer, Stress, Anesthesia, and Immune Response
- Diabetes Management and Research
- Retinal and Macular Surgery
- Mobile Health and mHealth Applications
- Electronic Health Records Systems
Johns Hopkins University
2008-2024
Wilmington University
2022-2024
Johns Hopkins Medicine
2003-2023
Potomac Institute for Policy Studies
2004-2023
NeuroRx Research (Canada)
2020-2023
Methodist Hospital
2021-2022
Columbia University
2022
NeuroBioTex (United States)
2020
University of Baltimore
1988-2016
Arlington Free Clinic
2016
To describe the development and performance of a brief questionnaire designed to measure functional impairment caused by cataract (the VF-14).Observational cross-sectional study. Patients were recruited between July 15 December 15, 1991.Patients from practices 70 ophthalmologists, located in Columbus, Ohio (N = 21), St Louis, Mo 26), Houston, Tex 23).Seven hundred sixty-six patients undergoing surgery for first time.Preoperative best corrected visual acuity each eye; scores on VF-14, new...
Bilateral blindness unrelated to simple refractive error is twice as prevalent among blacks whites, although the difference narrows elderly. The reasons for this race- and age-related pattern are uncertain.
To evaluate the association of vascular factors with primary open-angle glaucoma (POAG).A population-based prevalence survey ocular disease among black and white residents.Communities east Baltimore, Md.A stratified cluster sample 5308 residents 40 years age or older.Primary as defined by demonstrable glaucomatous optic nerve damage based on visual fields and/or disc findings. Intraocular pressure level was not a criterion for diagnosis.Systolic diastolic blood showed modest, positive POAG....
The Baltimore Eye Survey was a population–based survey conducted from January 1985 to November 1988 among residents of east Baltimore, Maryland, who were 40 years age or older. A total 5,308 black subjects and white received comprehensive screening examination for glaucoma including tonometry, visual fields, stereoscopic fundus photography, detailed medical ophthalmic history. Based on definitive examination, diagnosis any type made 196 persons. Tonometry, cup:disc ratio, narrowest...
Objective: To determine, from the health insurer's perspective, cost of preventing vision loss in patients with diabetes mellitus through ophthalmologic screening and treatment to calculate cost-effectiveness these interventions as compared that other medical interventions. Design: Computer modeling, incorporating data population-based epidemiologic studies multicenter clinical trials. Monte Carlo simulation was used, combined sensitivity analysis present value savings. Results: Screening...
A near-total shift to cataract extraction on an outpatient basis occurred as a result of administrative ruling by the Health Care Financing Administration. No national study has been conducted assess possible effects that decision clinical outcomes surgery. The authors compared rates retinal detachment (RD) repair and hospitalization for endophthalmitis after extracapsular (ECCE) (including phacoemulsification) in 1986 1987 with those following inpatient 1984.Using 5% random sample Medicare...
OBJECTIVE Diabetic retinopathy, which leads to macular edema and retinal neovascularization, is the leading cause of blindness among working-age Americans. Previous research has demonstrated significant cost savings associated with detection eye disease in Americans type 1 diabetes. However, treatment those II diabetes was previously thought not be cost-saving. Our purpose estimate current potential federal resulting from screening retinopathy patients diabetes, based on recently...
To analyze the health benefits and economics of treating NIDDM with goal normoglycemia.Incidence-based simulation model was used. Hazard rates for complications were adjusted glycemia using risk gradients from Diabetes Control Complications Trial. Treatment costs estimated national survey data clinical trials. Incremental expressed in present value dollars (3% discount rate). Life-years quality life, yielding quality-adjusted life-years (QALYs).Comprehensive treatment that maintains an HbA1c...
The association of diabetes with primary-open angle glaucoma (POAG) has been controversial and often confused by varying definitions both POAG. purpose this study is to evaluate in a population-based sample subjects from the Baltimore Eye Survey.
The authors studied 57,103 randomly selected Medicare beneficiaries who underwent extracapsular cataract extraction in 1986 or 1987 to determine the possible association between performance of neodymium (Nd):YAG laser capsulotomy and risk subsequent retinal break detachment.Cases surgery were identified from claims submitted followed through end 1988. Episodes surgery, posterior capsulotomy, complications ascertained based on procedure diagnosis codes listed physician bills hospital...
Objective Two million cataract extractions are performed annually in the United States. The procedure is nearly always accompanied by implantation of a monofocal intraocular lens (IOL), which corrects patient's distance vision. authors' objective was to measure visual function and quality-of-life outcomes associated with bilateral multifocal IOL, near vision, compare those standard therapy. Design A prospective, randomized, double-masked, clinical trial conducted at eight sites States, seven...
Background: Although ophthalmologists have long recognized that visual acuity alone is an inadequate measure of impairment, the need for and outcomes cataract surgery historically been assessed in terms acuity.Purpose: To examine relation among different outcome measures, including a 14-item instrument designed to functional impairment caused by (the VF-14), at 4 months after surgery. Methods:The authors performed longitudinal study 552 patients undergoing first eye 1 75 practicing Columbus,...
Although the prevalence of blindness and visual impairment increases with age, most surveys ocular disease do not include nursing home residents.
OBJECTIVE To develop a model of NIDDM for analyzing prevention strategies NIDDM. RESEARCH DESIGN AND METHODS A Markov type with Monte Carlo techniques was used. Age, sex, and ethnicity cohort based on U.S. data. Incidence rates complications were also community population studies. RESULTS Nonproliferative retinopathy, proliferative macular edema are predicted in 79, 19, 52%, respectively, people NIDDM; 19% to legal blindness. Microalbuminuria, gross proteinuria, end-stage renal disease...
• We analyzed the likelihood of rehospitalization for endophthalmitis in 338 141 Medicare beneficiaries over age 65 years who were admitted to US hospitals cataract extraction 1984. This cohort represents approximately one half all persons underwent under program Extracapsular was performed 195 587 (58%) cases, intracapsular 99 971 (30%), and phacoemulsification 28 474 (8%). The risk year following surgery 0.17% compared with 0.12% extracapsular or (<i>P</i><.002). at 1 month higher than...
Although more than 1 million cataract surgeries are performed annually in the United States, little is known about frequency of use or cost various services provided connection with this procedure. To assess which ophthalmic, optometric, anesthesia, and medical conjunction surgery to estimate Medicare associated those services, we analyzed 1985 through 1988 claims records a nationally representative 5% sample beneficiaries. The experience 57 103 beneficiaries who underwent extracapsular 1986...
No previous study documents improvement in visual acuity and subjective function associated with cataract surgery the first eye, second both eyes. Measurement of aspects quality life provides information that cannot be obtained simple measurement Snellen acuity.From 76 ophthalmology practices three cities, patients undergoing extraction intraocular lens implantation (n = 613) comparison 408) were enrolled a prospective study. Questionnaires elicited before after surgery, was from...
Purpose: Previous analyses of Medicare claims data, as well clinical series, have suggested that performance neodymium:YAG (Nd:YAG) laser posterior capsulotomy after extracapsular cataract surgery increases significantly the risk retinal detachment.However, methodologic problems with previous research limit strength conclusions can be drawn from these earlier studies.This study was designed to resolve those methodological limitations while using a population-based approach for assessment...
Medicare claims databases have several advantages for use in constructing episodes of care outcomes research. They are population-based, relatively inexpensive to obtain, include large numbers cases, and can be used long-term follow-up. However, the sheer size these databases, along with their primarily administrative (as opposed clinical) nature, requires that researchers take special using them. The 10 PORTs provided information on approach key issues working data, including: 1)...