Image-level tortuosity estimation in wide-field retinal images from infants with Retinopathy of Prematurity

2012 ◽  
Author(s):  
E. Poletti ◽  
E. Grisan ◽  
A. Ruggeri
Keyword(s):  
Retinopathy Of Prematurity ◽  
Retinal Images ◽  
Wide Field

scholarly journals Retinal vascular development in an immature retina at 33–34 weeks postmenstrual age predicts retinopathy of prematurity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Ji Hye Jang ◽  
Yu Cheol Kim
Keyword(s):  
Preterm Birth ◽  
Preterm Infants ◽  
Gestational Age ◽  
Retinopathy Of Prematurity ◽  
Retinal Images ◽  
Wide Field ◽  
Proliferative Phase ◽  
Postmenstrual Age ◽  
Zone Ii ◽  
Retinal Vascularization

Abstract In preterm birth, the immature retina can develop a potentially blinding disorder of the eye known as retinopathy of prematurity (ROP). The vaso-proliferative phase of ROP begins at an approximate postmenstrual age (PMA) of 32 weeks. There is little or no evidence of an association between ROP development and retinal status in the early vaso-proliferative phase. We aimed to evaluate the retinal vascular findings of infants at 33–34 weeks PMA to determine their risk of ROP. We reviewed 130 serial wide-field retinal images from 65 preterm infants born before the gestational age of 31 weeks. ROP occurred more frequently in infants having a leading vascular edge within posterior Zone II. This was in contrast to normal infants, who are characterized by complete retinal vascularization up to Zone II at 34 weeks PMA. The probability of ROP development in preterm infants with retinal edge hemorrhage was 24.58 times higher than in preterm infants without retinal edge hemorrhage. Eyes with ROP that required treatment showed significantly delayed retinal vascularization accompanied by pre-plus disease. In conclusion, retinal status in the early vaso-proliferation phase might determine the risk of ROP.

scholarly journals A study of risk factors and their correlation with severity of retinopathy of prematurity: a prospective study

2020 ◽  
Vol 7 (10) ◽  
pp. 1984
Author(s):  
Bhuvaneshwari C. Yelameli ◽  
Ramesh V. Neelannavar ◽  
Kiruthika Das
Keyword(s):  
Risk Factors ◽  
Birth Weight ◽  
Gestational Age ◽  
Retinopathy Of Prematurity ◽  
Survival Rates ◽  
Wide Field ◽  
Maternal Risk ◽  
Medical College ◽  
Stage 4 ◽  
A Prospective Study

Background: Recent advances in neonatal care in the last decade and improved survival rates have resulted in an apparent increase in the incidence of retinopathy of prematurity (ROP), which is the most important cause of preventable blindness in infants. This study was done to identify the risk factors which predispose to ROP and to assess its correlation with severity of ROP.Methods: A total of 140 neonates with gestational age ≤34 weeks, birth weight ≤2000 grams who were admitted at NICU, S. N. Medical College and HSK Hospital, Bagalkot from December 2018 to May 2019 were considered. Babies were assessed and recorded for the risk factors of ROP in a predesigned proforma. ROP screening was performed using wide-field digital imaging on a retcam shuttle (Clarity MSI, USA).Results: A total of 140 babies were examined, and an overall incidence of ROP was 52 (37.1%). 17 (32.7%) had stage 3, 3 (5.8%) had stage 4, and 1 (1.9%) had stage 5. Among the 52 babies with ROP, 19 (51.3%) underwent laser photoablation. Risk factors like gestational age, birth weight, maternal risk factors, apnea, intrauterine growth restriction (IUGR), hypoglycaemia, respiratory distress syndrome (RDS), sepsis, coronary heart disease (CHD), blood transfusion and oxygen requirement duration were significantly associated with ROP. Delay in the establishment of feeds has been associated with ROP (p<0.001).Conclusions: Screening should be intensified in the presence of risk factors which can reduce the incidence of severe stages of ROP as highlighted by this study.

Ultra-wide-field retinal images in an eye with a small-aperture corneal inlay

2015 ◽  
Vol 41 (1) ◽  
pp. 234-236 ◽  
Author(s):  
Reiji Yokota ◽  
Takashi Koto ◽  
Makoto Inoue ◽  
Akito Hirakata
Keyword(s):  
Retinal Images ◽  
Wide Field ◽  
Small Aperture ◽  
Corneal Inlay

Lesion detection in ultra-wide field retinal images for diabetic retinopathy diagnosis

2018 ◽  
Author(s):  
Anastasia Levenkova ◽  
Michael Kalloniatis ◽  
Angelica Ly ◽  
Arthur Ho ◽  
Arcot Sowmya
Keyword(s):  
Diabetic Retinopathy ◽  
Lesion Detection ◽  
Retinal Images ◽  
Wide Field

scholarly journals Training Hungarian neonatal transport nurses in screening for retinopathy of prematurity with telemedicine

2019 ◽  
Vol 2 (3) ◽  
pp. 65-71
Author(s):  
Zs Somogyvári ◽  
E Maka ◽  
J Németh ◽  
ZZ Nagy
Keyword(s):  
Retinopathy Of Prematurity ◽  
Selection Process ◽  
Theory And Practice ◽  
University Hospital ◽  
Wide Field ◽  
Artificial Eye ◽  
Neonatal Transport ◽  
Video Recordings ◽  
To Receive ◽  
Different Levels

Purpose Remote screening for retinopathy of prematurity by wide-field digital imaging and network telemedicine is increasingly used to prevent blindness without the unnecessary transport of infants. Our purpose was to train and license dedicated neonatal transport nurses to do this in Hungary. Materials and methods We developed a complex, four-step curriculum in mobile retinotelemetry. Using a robust selection process, we invited eight transport nurses (NtNP/RtN) to receive training during the 2008–2017 project. The curriculum started with the basics of ophthalmology. Using an artificial eye, it continued with the theory and practice of ophthalmologic exams. Then, supervised by an ophthalmologist, each nurse performed 50 video recordings of anaesthetized and non-anaesthetized infants. Results After demonstrating their competence, five of the eight candidate nurses received a license for retinotelemetry. During their subsequent practice, they had to undergo case reviews half-yearly by a specialist and renew their license every 2–3 years. During the 2008–2016 period, we analysed 7,177 remote screenings from a training perspective. During January 1–August 31 in 2017 period, we analysed extra data from 795 remote screenings of 332 infants from specific prevention perspectives. Conclusions With the cooperation of preexisting neonatal transport service and the ophthalmological reading centre of a university hospital, a mobile telemedicine screening network was successfully developed in Hungary. Our results demonstrate how retinotelemetry can support different levels of prevention medicine. The network should work effectively and efficiently with continuous professional development.

scholarly journals Ultra-wide field imaging of retinopathy of prematurity (ROP) using Optomap-200TX

2013 ◽  
Vol 2013 (oct08 1) ◽  
pp. bcr2013200734-bcr2013200734 ◽  
Author(s):  
S. Theodoropoulou ◽  
S. Ainsworth ◽  
A. Blaikie
Keyword(s):  
Retinopathy Of Prematurity ◽  
Wide Field ◽  
Field Imaging ◽  
Wide Field Imaging

scholarly journals Comparison of wide field imaging by nurses with indirect ophthalmoscopy by ophthalmologists for retinopathy of prematurity: a diagnostic accuracy study

BMJ Open ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. e036483
Author(s):  
Sam Ebenezer Athikarisamy ◽  
Geoffrey Christopher Lam ◽  
Stuart Ross ◽  
Shripada Cuddapah Rao ◽  
Debbie Chiffings ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Retinopathy Of Prematurity ◽  
Roc Curve ◽  
Image Interpretation ◽  
Wide Field ◽  
Index Test ◽  
Diagnostic Accuracy Study ◽  
Neonatal Nurses ◽  
Indirect Ophthalmoscopy ◽  
Accuracy Study

ObjectivesRetinopathy of prematurity (ROP) is a vasoproliferative disease of the preterm retina with the potential to cause irreversible blindness. Timely screening and treatment of ROP are critical. Neonatal nurses trained in wide field digital retinal photography (WFDRP) for screening may provide a safe and effective strategy to reduce the burden of ophthalmologists in performing binocular indirect ophthalmoscopy (BIO). The objective of the study was to determine the diagnostic accuracy of WFDRP in the diagnosis of referral warranting ROP (RWROP).DesignProspective diagnostic accuracy study.SettingA tertiary neonatal intensive care unit in Perth, Western Australia.ParticipantsPreterm infants who fulfilled the Australian ROP screening criteria (gestational age (GA) <31 weeks, birth weight (BW) <1250 g).InterventionSets of 5–6 images per eye (index test) were obtained within 24–48 hours prior to or after the BIO (reference standard), and uploaded onto a secured server. A wide field digital camera (RetCam, Natus, Pleasanton, California, USA) was used for imaging. A paediatric ophthalmologist performed the BIO. The ophthalmologists performing BIO versus reporting the images were masked to each other’s findings.Primary outcomeThe area under the receiver operating characteristic (ROC) curve was used as a measure of accuracy of WFDRP to diagnose RWROP.ResultsA total of 85 infants (mean BW; 973.43 g, mean GA; 29 weeks) underwent a median of two sessions of WFDRP. There were 188 episodes of screening with an average of five images per eye. WFDRP identified RWROP in 7.4% (14/188 sessions) of examinations. In one infant, BIO showed bilateral plus disease and WFDRP did not pick up the plus disease. WFDRP image interpretation had a sensitivity of 80%, specificity of 94.5% for the detection of RWROP. The ‘area under the ROC curve’ was 88% when adjusted for covariates.ConclusionsWFDRP by neonatal nurses was feasible and effective for diagnosing RWROP in our set up.Trial registration numberACTRN12616001386426.

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