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Dammann O, Stansfield BK. Neonatal sepsis as a cause of retinopathy of prematurity: An etiological explanation. Prog Retin Eye Res 2024; 98:101230. [PMID: 37984792 PMCID: PMC10842718 DOI: 10.1016/j.preteyeres.2023.101230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Retinopathy of prematurity (ROP) is a complex neonatal disorder with multiple contributing factors. In this paper we have mounted the evidence in support of the proposal that neonatal sepsis meets all requirements for being a cause of ROP (not a condition, mechanism, or even innocent bystander) by means of initiating the early stages of the pathomechanism of ROP occurrence, systemic inflammation. We use the model of etiological explanation, which distinguishes between two overlapping processes in ROP causation. It can be shown that sepsis can initiate the early stages of the pathomechanism via systemic inflammation (causation process) and that systemic inflammation can contribute to growth factor aberrations and the retinal characteristics of ROP (disease process). The combined contribution of these factors with immaturity at birth (as intrinsic risk modifier) and prenatal inflammation (as extrinsic facilitator) seems to provide a cogent functional framework of ROP occurrence. Finally, we apply the Bradford Hill heuristics to the available evidence. Taken together, the above suggests that neonatal sepsis is a causal inducer of ROP.
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Affiliation(s)
- Olaf Dammann
- Dept. of Public Health & Community Medicine, Tufts University School of Medicine, Boston, USA; Dept. of Gynecology & Obstetrics, Hannover Medical School, Hannover, Germany; Dept. of Neuromedicine & Movement Science, Norwegian University of Science & Technology, Trondheim, Norway; Dept. of Philosophy, University of Johannesburg, Johannesburg, South Africa.
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Huang Q, Wang C, Yu H, Liu Y, Zhu H, Peng J, Yu J, Zhao P. Incomplete retinal vascularization with retinopathy of prematurity-like ridges in healthy full-term newborns. Int Ophthalmol 2023:10.1007/s10792-023-02729-8. [PMID: 37178407 DOI: 10.1007/s10792-023-02729-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023]
Abstract
PURPOSE To describe the characteristics and clinical course of retinopathy of prematurity (ROP)-like ridges in healthy full-term newborns. METHODS A retrospective medical record review was performed on newborns who underwent fundus photography within 72 h of birth between January 1st and December 31st, 2019 at Women & Children's Health Care Hospital of Huantai, China. The RetCam 3 wide-field digital imaging system was used for fundus photography. ROP-like ridges were discovered and described. RESULTS Total of 5507 full-term infants underwent fundus photography. ROP-like ridges were discovered in 90 eyes from 57 infants (1.0%). Stage 1 ROP-like was seen in 63 of the eyes (70%), Stage 2 ROP-like in 26 of the eyes (28.9%), and Stage 3 ROP-like in 1 eye (1.1%). These ROP-like ridges were found in Zone II (41.1%) and Zone III (58.9%), but not in Zone I. Eight (8.9%) of the eyes had pre-plus-like diseases. No eyes had plus disease. All ROP-like ridges and pre-plus-like diseases were spontaneously regressed with a mean duration of 39.0 ± 8.2 days. Male sex (P = 0.003) was positively associated with ROP-like changes. CONCLUSION Healthy full-term newborns may have incomplete retinal vascularization and ROP-like ridges at birth. These ROP-like ridges showed signs of spontaneous regression.
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Affiliation(s)
- Qiujing Huang
- Department of Ophthalmology, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Floor 11, No. 19 Building, 1665 Kongjiang Road, Shanghai, China, 200092
| | - Cui Wang
- Department of Ophthalmology, Women's & Children's Health Care Hospital of Huantai, 5066 Yuyang Street, Huantai, Shandong, China, 256400
| | - Han Yu
- Ophthalmology & Optometry Medical School, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Yixuan Liu
- Department of Ophthalmology, Women's & Children's Health Care Hospital of Huantai, 5066 Yuyang Street, Huantai, Shandong, China, 256400
| | - Hua Zhu
- Department of Ophthalmology, Women's & Children's Health Care Hospital of Huantai, 5066 Yuyang Street, Huantai, Shandong, China, 256400
| | - Jie Peng
- Department of Ophthalmology, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Floor 11, No. 19 Building, 1665 Kongjiang Road, Shanghai, China, 200092
| | - Junli Yu
- Department of Ophthalmology, Women's & Children's Health Care Hospital of Huantai, 5066 Yuyang Street, Huantai, Shandong, China, 256400.
| | - Peiquan Zhao
- Department of Ophthalmology, School of Medicine, Xinhua Hospital, Shanghai Jiao Tong University, Floor 11, No. 19 Building, 1665 Kongjiang Road, Shanghai, China, 200092.
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Sun L, Yan W, Huang L, Li S, Liu J, Lu Y, Su M, Li Z, Ding X. ROP-like retinopathy in full/near-term newborns: A etiology, risk factors, clinical and genetic characteristics, prognosis and management. Front Med (Lausanne) 2022; 9:914207. [PMID: 36035399 PMCID: PMC9399493 DOI: 10.3389/fmed.2022.914207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
PurposeRetinopathy of prematurity (ROP) like retinopathy (ROPLR) could occur in full/near-term newborns. The causes and clinical features are still largely elusive. This study focused on the risk factors, clinical and genetic characteristics, treatment and outcome, and prognosis of ROPLR.MethodsA total of 47 consecutive full/near-term newborns during 2016–2017 with ROPLR were included. The clinical and genetic characteristics, treatment and outcome, prognosis, and potential underlying etiology of ROPLR were were analyzed.Results91 eyes of 47 infants were found to have ROPLR. The ROPLR regressed completely in 65.9% and partially in 20.9% of eyes without any interventions. Retinal changes of family exudative vitreoretinopathy (FEVR) were allocated in 12 neonates (group A), perinatal hypoxia-ischemia were categorized in 17 neonates (group B), and the other 18 neonates were categorized in group C. Compared to those in group B/C, infants in group A had significantly more severe retinopathy (stage 4/5, p < 0.001) and more treatments (p < 0.00 risk factor 1).ConclusionsPerinatal hypoxia-ischemia might be a major risk factor for ROPLR, in which spontaneous regression was common. FEVR, confirmed by positive family findings and genetic testing, might be the second risk factor of ROPLR, in which retinopathy is more severe and treatment is needed.
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Affiliation(s)
- Limei Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Wenjia Yan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Li Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Songshan Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Jia Liu
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China
| | - Yamei Lu
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, China
| | - Manxiang Su
- Zhuhai Maternity and Child Health Hospital, Zhuhai, China
| | - Zhan Li
- Zhuhai Maternity and Child Health Hospital, Zhuhai, China
| | - Xiaoyan Ding
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Xiaoyan Ding
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Zhang H, She K, Lu F. A case of anterior persistent hyperplastic primary vitreous associated with morning glory disc anomaly and retinopathy of prematurity like retinopathy in a term-born child. BMC Ophthalmol 2021; 21:455. [PMID: 34963467 PMCID: PMC8715584 DOI: 10.1186/s12886-021-02200-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 12/05/2021] [Indexed: 02/08/2023] Open
Abstract
Background Association of morning glory disc anomaly (MGDA) with persistent hyperplastic primary vitreous (PHPV) has been reported earlier. Retinopathy of prematurity (ROP) like retinopathy in preterm babies with optic disc anomalies has also been published. Our case is unique in terms of presence MGDA, PHPV, unilateral ROP like retinopathy in a term infant with normal birth weight. Case presentation A 5-month-old girl, born at term with a birth weight of 3750 g, presented with anterior PHPV, MGDA and ROP like retinopathy. In order to prevent retinal detachment, she received 360 degree barrage laser photocoagulation at the edge of the optic disc excavation of the left eye. In the follow-up a month later, laser scars were found in her left fundus without other complications. Conclusion PHPV and MGDA with ROP like retinopathy in term and normal weight baby is rare. The peripheral avascular retinal area, caused by the dragging of the defected optic disc, might have been more vulnerable to the oxygen change after birth which resulted in ROP like retinopathy. High sensitivity to oxygen results in a series of changes such as upregulation of VEGF and IGF-1 may cause ROP-like retinopathy.
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Affiliation(s)
- Hao Zhang
- Department of Ophthalmology, West China Hospital, Sichuan University, No.37, Guoxue xiang, Chengdu, 610041, Sichuan, China
| | - Kaiqin She
- Department of Ophthalmology, West China Hospital, Sichuan University, No.37, Guoxue xiang, Chengdu, 610041, Sichuan, China
| | - Fang Lu
- Department of Ophthalmology, West China Hospital, Sichuan University, No.37, Guoxue xiang, Chengdu, 610041, Sichuan, China.
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Fundus Examination of 23,861 Newborns by Digital Imaging in Ningbo. J Ophthalmol 2021; 2021:6620412. [PMID: 34012681 PMCID: PMC8102127 DOI: 10.1155/2021/6620412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 03/24/2021] [Accepted: 04/23/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose To perform fundus examinations of full-term and premature infants to identify common congenital ocular diseases and determine the incidence and additional risk factors in Ningbo, China. Methods Fundus examinations were performed on newborns between January 2017 and July 2020 in Ningbo using a RetCam3 or PanoCam LT wide-field digital imaging system. The neonates' birth weight, gestational age, gender, delivery mode, oxygen intake, and other conditions were recorded. We compared the incidence of ocular abnormalities in both full-term newborns and premature infants. Results There were 23,861 newborns in this study comprising 12,605 (52.8%) male and 11,256 (47.2%) female infants, 20,938 full-term babies, and 2,923 premature babies. The average gestational age was 37.9 ± 5.6 weeks, and the average birth weight was 3,189 ± 417 g. Overall, we found ocular abnormalities in 6,645 (27.8%). The most common abnormality in full-term newborns was retinal hemorrhage (RH), which we found in 3,827 (18.3%) cases. Other diseases identified included familial exudative vitreoretinopathy (FEVR), retinoblastoma (RB), and congenital cataracts. The delivery method had a significant impact on the incidence of neonatal RH (P < 0.001). Retinopathy of prematurity (ROP) was observed in 617 newborns accounting for 21.1% of all screened premature infants. Logistic analysis showed that gestational age and birth weight were important risk factors for ROP (P < 0.001). For treatable diseases, such as ROP, FEVR, congenital cataract, glaucoma, and RB, early identification allows for active treatment or referral to a specialized hospital for further treatment. Conclusion Early examination and prompt treatment of ocular disorders in newborns are important to avoid lifelong visual impairment. Eye examinations should be performed during the neonatal period and at regular follow-up visits.
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Normal aging changes in the choroidal angioarchitecture of the macula. Sci Rep 2020; 10:10810. [PMID: 32616774 PMCID: PMC7331638 DOI: 10.1038/s41598-020-67829-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 06/10/2020] [Indexed: 11/12/2022] Open
Abstract
The choroidal vascularity index (CVI) has been shown to be sensitive in detecting changes in choroidal angioarchitecture in a range of ocular diseases. However, changes in CVI in association with normal physiological aging and spatial distribution remains to be determined. This is significant as a range of ocular conditions with choroidal degeneration are associated with aging. In this study, we assessed CVI for 106 healthy eyes from 106 individuals (range 21–78 years old, ~ 20 individuals/decade) at 15 eccentricities across the macula (0, 230 µm, 460 µm, 690 µm, 1,150 µm, 1,380 µm and 2,760 µm from the fovea in the superior and inferior direction). Total choroidal area, luminal area and stromal area were all significantly decreased with age (p < 0.001 for all parameters). CVI was also significantly decreased with age (p < 0.01) and eccentricity. Fitting of quadratic regression curves to CVI as a function of age yielded a good fit for all eccentricities (r2 = 0.55–0.80) and suggested a decrease in CVI from the ages of 33–43 years at a rate of 0.7–2.7% per decade. CVI was lower in the inferior versus superior retina at matching eccentricities and a significant difference in age-related decline of CVI with eccentricity only occurred in inferior locations. These findings suggest choroidal angioarchitecture declines from the 4th decade of life with potential eccentricity differences in the inferior and superior retina. Considering the number of age-related diseases with choroidal dysfunction, these results provide foundational knowledge to understand choroidal involvement in these diseases.
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Huang HB, Chen YH, Wu J, Hicks M, Yi YZ, Zhang QS, Chow CB, Cheung PY. Early Risk Factors for Retinopathy of Prematurity in Very and Extremely Preterm Chinese Neonates. Front Pediatr 2020; 8:553519. [PMID: 33178651 PMCID: PMC7593333 DOI: 10.3389/fped.2020.553519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 08/27/2020] [Indexed: 12/14/2022] Open
Abstract
Objective: To investigate the incidence and risk factors of retinopathy of prematurity (ROP) in very and extremely preterm (28+0- <32+0, and <28+0 weeks gestation, respectively) neonates, and the predictive factors for ROP in the early hours after birth and during hospitalization. Methods: Using a prospective database supplemented with a retrospective chart review, we identified preterm neonates born at gestation <32 weeks at the University of Hong Kong-Shenzhen Hospital between January 2015 and August 2018. Demographic and clinical variables were studied including indicators of disease acuity in the first 24 h after birth. We also compared the difference in risk factors between survivors with ROP and survivors without ROP. Results: During the study period, there were 529 preterm neonates admitted to our neonatal intensive care unit with 120 (23%) born at <32 weeks' gestation. Thirteen (11%) neonates died. Among the 107 survivors, 23 (21%) had ROP, of whom five (22%) received laser and/or medical therapy for severe ROP. Compared with survivors without ROP, infants with ROP had lower mean blood pressure in the first 12 and 24 h after birth, respectively. Using multivariate regression, gestation age, mean blood pressure in the first 12 h after birth, hospital length of stay, and total days of blood gases pH <7.2 were independent risk factors for ROP. Conclusions: In this small cohort of Chinese neonates born <32+0 weeks' gestation, survivors with ROP had a lower blood pressure in the early hours after birth, younger gestation, longer hospital stay, and duration of acidosis when compared to those without ROP.
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Affiliation(s)
- Hai-Bo Huang
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Yi-Hua Chen
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Jing Wu
- Department of Ophthalmology, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Matt Hicks
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - Yan-Zhi Yi
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Qian-Shen Zhang
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Chun-Bong Chow
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Po-Yin Cheung
- Department of Pediatrics, University of Hong Kong-Shenzhen Hospital, Shenzhen, China.,Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
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Risk of hospitalization for common neonatal morbidities in preterm and term infants: assessing the impact of one or more major congenital anomalies. J Perinatol 2019; 39:1602-1610. [PMID: 31395956 DOI: 10.1038/s41372-019-0460-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To analyze the impact of ≥1 major congenital anomaly (CA) on risk and hospitalization for common neonatal morbidities. STUDY DESIGN Retrospective infant cohort: 241,033 preterm and 3,446,156 term singletons in the US Premier Healthcare database (2006-2013) with up to 1-year follow-up. Discharge records were searched for ≥1 CA and neonatal morbidities. RESULTS Five morbidities demonstrated strong increasing rates as GA decreased. RRs in preterm infants with CAs relative to those without CAs were: RDS (2.17, 95% CI 2.14-2.21), sepsis (2.42, 95% CI 2.37-2.46), apnea (2.04, 95% CI 2.01-2.07), infectious diseases (2.37, 95% CI 2.34-2.41), and hyperbilirubinemia (1.25, 95% CI 1.24-1.26). Median length of NICU stay (days) was consistently longer in infants with ≥1 CA relative to infants without CA during each GA period. CONCLUSIONS Preterm infants with ≥1 major CA have increased risk of hospitalization for common morbidities, implying compromised neonatal health regardless of CA type.
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Tang H, Li N, Li Z, Zhang M, Wei M, Huang C, Wang J, Li F, Wang H, Liu Z, He L, Cheng Y, Chen W, Jin L, Gong L, Lu J, Xue Y, Su M, Wang Y, Mo H, Chen Z, Guo W, Li Y, Pan H, Zhang W, Ma X, Jin X, Wang B. Fundus examination of 199 851 newborns by digital imaging in China: a multicentre cross-sectional study. Br J Ophthalmol 2018; 102:1742-1746. [DOI: 10.1136/bjophthalmol-2018-312366] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 12/20/2022]
Abstract
BackgroundThe prevalence of ocular abnormalities of newborn in China has seldom been reported. To report the implementation of digital imaging in ocular screening of all newborns in multiple centres in China and to describe the abnormal findings of fundus examination, we did the cross-sectional study.MethodsFundus examinations were performed on newborns within the 42 days after birth using a RetCam wide-field digital imaging system. Digital images of the posterior pole, superior, nasal and temporal retinal fields of each participant were taken. All newborns were from eights centres across China from January 2009 to July 2017.ResultsA total of 199 851 newborns were included in the study. We detected 18 198 (9.11%) abnormal cases. The most frequent abnormality was severe retinal haemorrhage (RH) found in 12 810 cases (6.41%). The other anomalies included familial exudative vitreoretinopathy, retinopathy of prematurity, abnormal fundus pigmentation, subconjunctival haemorrhage, choroidal coloboma, idiopathic retinal venous tortuosity, exudative changes and other anomalies with uncertain identities.ConclusionThis large-scale study of newborn fundus examination showed a relatively high prevalence of ocular abnormalities. Hundreds of neonates with rare disorders that severely impair ocular health were also detected at an early age. The long-term impact of other anomalies including RHs on the ocular system should be investigated by a perspective study. Our study suggested that fundus examination of newborns can play a beneficial role in ocular health.
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Azami M, Jaafari Z, Rahmati S, Farahani AD, Badfar G. Prevalence and risk factors of retinopathy of prematurity in Iran: a systematic review and meta-analysis. BMC Ophthalmol 2018; 18:83. [PMID: 29606108 PMCID: PMC5879798 DOI: 10.1186/s12886-018-0732-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 02/26/2018] [Indexed: 01/12/2023] Open
Abstract
Background Retinopathy of prematurity (ROP) refers to the developmental disorder of the retina in premature infants and is one of the most serious and most dangerous complications in premature infants. The prevalence of ROP in Iran is different in various parts of Iran and its prevalence is reported to be 1–70% in different regions. This study aims to determine the prevalence and risk factors of ROP in Iran. Methods This review article was conducted based on the preferred reporting items for systematic review and meta-analysis (PRISMA) protocols. To find literature about ROP in Iran, a comprehensive search was done using MeSH keywords in several online databases such as PubMed, Ovid, Science Direct, EMBASE, Web of Science, CINAHL, EBSCO, Magiran, Iranmedex, SID, Medlib, IranDoc, as well as the Google Scholar search engine until May 2017. Comprehensive Meta-analysis Software (CMA) Version 2 was used for data analysis. Results According to 42 studies including 18,000 premature infants, the prevalence of ROP was reported to be 23.5% (95% CI: 20.4–26.8) in Iran. The prevalence of ROP stages 1, 2, 3, 4 and 5 was 7.9% (95% CI: 5.3–11.5), 9.7% (95% CI: 6.1–15.3), 2.8% (95% CI: 1.6–4.9), 2.9% (95% CI: 1.9–4.5) and 3.6% (95% CI: 2.4–5.2), respectively. The prevalence of ROP in Iranian girls and boys premature infants was 18.3% (95% CI: 12.8–25.4) and 18.9% (95% CI: 11.9–28.5), respectively. The lowest prevalence of ROP was in the West of Iran (12.3% [95% CI: 7.6–19.1]), while the highest prevalence was associated with the Center of Iran (24.9% [95% CI: 21.8–28.4]). The prevalence of ROP is increasing according to the year of study, and this relationship is not significant (p = 0.181). The significant risk factors for ROP were small gestational age (p < 0.001), low birth weight (p < 0.001), septicemia (p = 0.021), respiratory distress syndrome (p = 0.036), intraventricular hemorrhage (p = 0.005), continuous positive pressure ventilation (p = 0.023), saturation above 50% (p = 0.023), apnea (p = 0.002), frequency and duration of blood transfusion, oxygen therapy and phototherapy (p < 0.05), whereas pre-eclampsia decreased the prevalence of ROP (p = 0.014). Conclusion Considering the high prevalence of ROP in Iran, screening and close supervision by experienced ophthalmologists to diagnose and treat the common complications of pre-maturity and prevent visual impairment or blindness is necessary.
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Affiliation(s)
- Milad Azami
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | - Zahra Jaafari
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | - Shoboo Rahmati
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | | | - Gholamreza Badfar
- Department of Pediatrics, Behbahan Faculty of Medical Sciences, Behbahan, Iran.
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