نتایج جستجو برای: prethreshold

تعداد نتایج: 56  

Journal: :Archives of ophthalmology 2011
Kristi Washburn Tolsma Elizabeth N Allred Minghua L Chen Jay Duker Alan Leviton Olaf Dammann

OBJECTIVE To explore whether early or late and presumed or definite neonatal bacteremia are associated with an increased risk of severe retinopathy of prematurity (ROP). METHODS We evaluated 1059 infants born before week 28 of gestation for ROP. Infants were classified as having early (postnatal week 1) or late (weeks 2-4) definite (culture-proven) or presumed (antibiotics taken for >72 hours...

Journal: :Archives of ophthalmology 2006
Deborah K VanderVeen David K Coats Velma Dobson Douglas Fredrick Robert A Gordon Robert J Hardy Daniel E Neely Earl A Palmer Scott M Steidl Betty Tung William V Good

OBJECTIVE To present strabismus data for premature infants with prethreshold retinopathy of prematurity (ROP) enrolled in the Early Treatment for Retinopathy of Prematurity study. DESIGN The prevalence of strabismus was tabulated for all of the infants with high-risk prethreshold disease who participated in the randomized trial of the Early Treatment for Retinopathy of Prematurity study and w...

Journal: :Archives of ophthalmology 2010
William V Good Robert J Hardy Velma Dobson Earl A Palmer Dale L Phelps Betty Tung Maryann Redford

OBJECTIVE To compare visual acuity at 6 years of age in eyes that received early treatment for high-risk prethreshold retinopathy of prematurity (ROP) with conventionally managed eyes. METHODS Infants with symmetrical, high-risk prethreshold ROP (n = 317) had one eye randomized to earlier treatment at high-risk prethreshold disease and the other eye managed conventionally, treated if ROP prog...

Journal: :Archives of ophthalmology 2011
Velma Dobson Graham E Quinn C Gail Summers Robert J Hardy Betty Tung William V Good

OBJECTIVE To compare grating (resolution) visual acuity at 6 years of age in eyes that received early treatment (ET) for high-risk prethreshold retinopathy of prematurity (ROP) with that in eyes that underwent conventional management (CM). METHODS In a randomized clinical trial, infants with bilateral, high-risk prethreshold ROP (n = 317) had one eye undergo ET and the other eye undergo CM, w...

Journal: :The British journal of ophthalmology 2006
M F Chiang J Starren Y E Du J D Keenan W M Schiff G R Barile J Li R A Johnson D J Hess J T Flynn

BACKGROUND/AIMS Telemedicine offers potential to improve the accessibility and quality of diagnosis of retinopathy of prematurity (ROP). The aim of this study was to measure accuracy of remote image based ROP diagnosis by three readers using receiver operating characteristic (ROC) analysis. METHODS 64 hospitalised infants who met ROP examination criteria underwent two consecutive bedside proc...

2015
Yi Chen Jing Feng Clare Gilbert Hong Yin Jianhong Liang Xiaoxin Li

PURPOSE To investigate the postmenstrual (PMA) age at treatment of severe retinopathy of prematurity (i.e. Type 1 prethreshold or threshold) in infants in a tertiary referral center in China. PRINCIPAL FINDINGS 76.6% (359/469) of infants were treated for threshold disease. 67.5% (317/469) of infants had a birth weight (BW) of 1250 g or above and almost 30% (126) had a gestational age (GA) of ...

Journal: :Archives of ophthalmology 2007
Michael F Chiang Lu Wang Mihai Busuioc Yunling E Du Patrick Chan Steven A Kane Thomas C Lee David J Weissgold Audina M Berrocal Osode Coki John T Flynn Justin Starren

OBJECTIVE To prospectively measure accuracy, reliability, and image quality of telemedical retinopathy of prematurity (ROP) diagnosis. METHODS Two-hundred forty-eight eyes from 67 consecutive infants underwent wide-angle retinal imaging by a trained neonatal nurse at 31 to 33 weeks' and/or 35 to 37 weeks' postmenstrual age (PMA) using a standard protocol. Data were uploaded to a Web-based tel...

2013
Mohammad Mehdi Parvaresh Khalil Ghasemi Falavarjani Mehdi Modarres Hossein Nazari Nahid Saiepour

PURPOSE To report the outcomes of transscleral diode laser photocoagulation for treatment of type 1 prethreshold retinopathy of prematurity (ROP). METHODS In this prospective interventional case series, 139 eyes of 73 infants with type 1 prethreshold ROP underwent transscleral diode laser photocoagulation of the avascular retina under topical anesthesia without making a conjunctival incision....

Journal: :Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus 2008
Graham E Quinn Velma Dobson Bradley V Davitt Robert J Hardy Betty Tung Claudia Pedroza William V Good

PURPOSE Examine the prevalence of myopia and high myopia, at 6 and 9 months postterm and 2 and 3 years postnatal in preterm children with birth weights < 1251 g who developed high-risk prethreshold retinopathy of prematurity (ROP) in the neonatal period and participated in the Early Treatment for ROP Study. DESIGN Randomized controlled clinical trial. PARTICIPANTS Four hundred one infants w...

Journal: :Laser & Photonics Reviews 2021

The genesis of lasing, as an evolution the laser hybrid eigenstates comprised electromagnetic modes and atomic polarization, is considered. It shown that start coherent generation at threshold preceded by formation a special state lasing prethreshold. This characterized enhanced coupling among excited atoms modes. leads to increase in rate stimulated emission and, ultimately, lasing. At prethre...

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