Karyn Jonas

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PURPOSE To examine the usefulness of fluorescein angiography (FA) in identifying the macular center and diagnosis of zone in patients with retinopathy of prematurity (ROP). DESIGN Validity and reliability analysis of diagnostic tools. METHODS Thirty-two sets (16 color fundus photographs and 16 color fundus photographs paired with the corresponding FA(More)
PURPOSE To examine the influence of fluorescein angiography (FA) on the diagnosis and management of retinopathy of prematurity (ROP). DESIGN Prospective cohort study. PARTICIPANTS Nine recognized ROP experts (3 pediatric ophthalmologists and 6 retina specialists) interpreted 32 sets (16 color fundus photographs and 16 color fundus photographs paired(More)
PURPOSE To characterize the frequency of and clinical indications for which experts treat retinopathy of prematurity (ROP) milder than type 1 disease, the recommended threshold for treatment from established consensus guidelines. DESIGN Descriptive analysis. METHODS setting: Multicenter. STUDY POPULATION A database of 1444 eyes generated prospectively(More)
PURPOSE We developed and evaluated the performance of a novel computer-based image analysis system for grading plus disease in retinopathy of prematurity (ROP), and identified the image features, shapes, and sizes that best correlate with expert diagnosis. METHODS A dataset of 77 wide-angle retinal images from infants screened for ROP was collected. A(More)
PURPOSE To identify any temporal trends in the diagnosis of plus disease in retinopathy of prematurity (ROP) by experts. DESIGN Reliability analysis. METHODS ROP experts were recruited in 2007 and 2016 to classify 34 wide-field fundus images of ROP as plus, pre-plus, or normal, coded as "3," "2," and "1," respectively, in the database. The main outcome(More)
PURPOSE To determine the feasibility and safety of bilateral simultaneous vitreoretinal surgery in pediatric patients. DESIGN International, multicenter, interventional, retrospective case series. PARTICIPANTS Patients 17 years of age or younger from 24 centers worldwide who underwent immediate sequential bilateral vitreoretinal surgery (ISBVS)-defined(More)
PURPOSE To determine expert agreement on relative retinopathy of prematurity (ROP) disease severity and whether computer-based image analysis can model relative disease severity, and to propose consideration of a more continuous severity score for ROP. DESIGN We developed 2 databases of clinical images of varying disease severity (100 images and 34(More)
PURPOSE To evaluate a tele-education system developed to improve diagnostic competency in retinopathy of prematurity (ROP) by ophthalmologists-in-training in Mexico. DESIGN Prospective, randomized cohort study. PARTICIPANTS Fifty-eight ophthalmology residents and fellows from a training program in Mexico consented to participate. Twenty-nine of 58(More)
Importance Telemedicine is becoming an increasingly important component of clinical care for retinopathy of prematurity (ROP), but little information exists regarding the role of mosaic photography for ROP telemedicine diagnosis. Objective To examine the potential effect of computer-generated mosaic photographs on the diagnosis and management of ROP. (More)
PURPOSE To describe the design, implementation, and evaluation of a tele-education system developed to improve diagnostic competency in retinopathy of prematurity (ROP) by ophthalmology residents. METHODS A secure Web-based tele-education system was developed utilizing a repository of over 2,500 unique image sets of ROP. For each image set used in the(More)