Browsing by Subject "Pediatric ophthalmology"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    International Classification of Retinopathy of Prematurity, Third Edition
    (Elsevier, 2021) Chiang, Michael F.; Quinn, Graham E.; Fielder, Alistair R.; Ostmo, Susan R.; Chan, R. V. Paul; Berrocal, Audina; Binenbaum, Gil; Blair, Michael; Campbell, J. Peter; Capone, Antonio, Jr.; Chen, Yi; Dai, Shuan; Ells, Anna; Fleck, Brian W.; Good, William V.; Hartnett, M. Elizabeth; Holmstrom, Gerd; Kusaka, Shunji; Kychenthal, Andrés; Lepore, Domenico; Lorenz, Birgit; Martinez-Castellanos, Maria Ana; Özdek, Şengül; Ademola-Popoola, Dupe; Reynolds, James D.; Shah, Parag K.; Shapiro, Michael; Stahl, Andreas; Toth, Cynthia; Vinekar, Anand; Visser, Linda; Wallace, David K.; Wu, Wei-Chi; Zhao, Peiquan; Zin, Andrea; Ophthalmology, School of Medicine
    Purpose: The International Classification of Retinopathy of Prematurity is a consensus statement that creates a standard nomenclature for classification of retinopathy of prematurity (ROP). It was initially published in 1984, expanded in 1987, and revisited in 2005. This article presents a third revision, the International Classification of Retinopathy of Prematurity, Third Edition (ICROP3), which is now required because of challenges such as: (1) concerns about subjectivity in critical elements of disease classification; (2) innovations in ophthalmic imaging; (3) novel pharmacologic therapies (e.g., anti-vascular endothelial growth factor agents) with unique regression and reactivation features after treatment compared with ablative therapies; and (4) recognition that patterns of ROP in some regions of the world do not fit neatly into the current classification system. Design: Review of evidence-based literature, along with expert consensus opinion. Participants: International ROP expert committee assembled in March 2019 representing 17 countries and comprising 14 pediatric ophthalmologists and 20 retinal specialists, as well as 12 women and 22 men. Methods: The committee was initially divided into 3 subcommittees-acute phase, regression or reactivation, and imaging-each of which used iterative videoconferences and an online message board to identify key challenges and approaches. Subsequently, the entire committee used iterative videoconferences, 2 in-person multiday meetings, and an online message board to develop consensus on classification. Main outcome measures: Consensus statement. Results: The ICROP3 retains current definitions such as zone (location of disease), stage (appearance of disease at the avascular-vascular junction), and circumferential extent of disease. Major updates in the ICROP3 include refined classification metrics (e.g., posterior zone II, notch, subcategorization of stage 5, and recognition that a continuous spectrum of vascular abnormality exists from normal to plus disease). Updates also include the definition of aggressive ROP to replace aggressive-posterior ROP because of increasing recognition that aggressive disease may occur in larger preterm infants and beyond the posterior retina, particularly in regions of the world with limited resources. ROP regression and reactivation are described in detail, with additional description of long-term sequelae. Conclusions: These principles may improve the quality and standardization of ROP care worldwide and may provide a foundation to improve research and clinical care.
  • Thumbnail Image
    Item
    Low- and Very Low-Dose Bevacizumab for Retinopathy of Prematurity: Reactivations, Additional Treatments, and 12-Month Outcomes
    (Elsevier, 2022) Freedman, Sharon F.; Hercinovic, Amra; Wallace, David K.; Kraker, Raymond T.; Li, Zhuokai; Bhatt, Amit R.; Boente, Charline S.; Crouch, Eric R.; Hubbard, G. Baker; Rogers, David L.; VanderVeen, Deborah; Yang, Michael B.; Cheung, Nathan L.; Cotter, Susan A.; Holmes, Jonathan M.; Pediatric Eye Disease Investigator Group; Ophthalmology, School of Medicine
    Purpose: Low-dose and very low-dose intravitreal bevacizumab (IVB) have been reported to be successful in short-term treatment of type 1 retinopathy of prematurity (ROP), down to an initial dose of 0.004 mg. We now report 12-month outcomes for these infants. Design: Masked, multicenter, dose de-escalation study. Participants: One hundred twenty prematurely born infants with type 1 ROP. Methods: A cohort of 120 infants with type 1 ROP in at least 1 eye from 2 sequential dose de-escalation studies of low-dose IVB (0.25 mg, 0.125 mg, 0.063 mg, and 0.031 mg) or very low-dose IVB (0.016 mg, 0.008 mg, 0.004 mg, and 0.002 mg) to the study eye; the fellow eye (if also type 1) received 1 dose level higher of IVB. After primary success or failure at 4 weeks, clinical management was at investigator discretion, including all additional treatment. Main outcome measures: Reactivation of severe ROP by 6 months corrected age, additional treatments, retinal and other ocular structural outcomes, and refractive error at 12 months corrected age. Results: Sixty-two of 113 study eyes (55%) and 55 of 98 fellow eyes (56%) received additional treatment. Of the study eyes, 31 (27%) received additional ROP treatment, and 31 (27%) received prophylactic laser therapy for persistent avascular retina. No trend toward a higher risk of additional ROP treatment related to initial IVB doses was found. However, time to reactivation among study eyes was shorter in eyes that received very low-dose IVB (mean, 76.4 days) than in those that received low-dose IVB (mean, 85.7 days). At 12 months, poor retinal outcomes and anterior segment abnormalities both were uncommon (3% and 5%, respectively), optic atrophy was noted in 10%, median refraction was mildly myopic (-0.31 diopter), and strabismus was present in 29% of infants. Conclusions: Retinal structural outcomes were very good after low- and very low-dose IVB as initial treatment for type 1 ROP, although many eyes received additional treatment. The rate of reactivation of severe ROP was not associated with dose; however, a post hoc data-driven analysis suggested that reactivation was sooner with very low doses.