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Shemesh R, Strauss T, Zaslavsky-Paltiel I, Lerner-Geva L, Reichman B, Wygnanski-Jaffe T. Perinatal and neonatal risk factors for retinopathy of prematurity in very low birthweight, very preterm twins: a population-based study. Eye (Lond) 2024; 38:902-909. [PMID: 37925560 PMCID: PMC10965998 DOI: 10.1038/s41433-023-02801-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 09/28/2023] [Accepted: 10/17/2023] [Indexed: 11/06/2023] Open
Abstract
OBJECTIVE To determine the effect of perinatal and neonatal risk factors on retinopathy of prematurity (ROP) and to examine the association of fertility treatments on the risk for ROP in very low birth weight (VLBW) preterm twins. METHODS The population-based observational study consisted of VLBW twins born at 24-29 weeks gestational age (GA). Data from the Israel national database (1995-2020) were applied. Univariate and multivariable logistic regression using the General Estimating Equation were used for assessment of risk factors. RESULTS The study population comprised 4092 infants of whom 2374 (58%) were conceived following fertility treatments. ROP was diagnosed in 851 (20.8%) infants. The odds for ROP approximately doubled with each week decrease in GA: at 24 weeks, Odds Ratio (OR) 58.00 (95% confidence interval (CI) 31.83-105.68); 25 weeks, OR 25.88 (95% CI 16.76-39.96); 26 weeks, OR 12.69 (95% CI 8.84-18.22) compared to 29 weeks GA. Each decrease in one birthweight z-score was associated with 1.82-fold increased risk for ROP (OR, 1.82, 95% CI 1.59-2.08). Infertility treatments were not associated with ROP. Neonatal morbidities significantly associated with ROP were surgical necrotizing enterocolitis (NEC) (OR, 2.04, 95% CI 1.31-3.19); surgically treated patent ductus arteriosus (PDA) (OR, 1.63, 95% CI 1.12-2.37); sepsis (OR, 1.43, 95% CI 1.20-1.71) and bronchopulmonary dysplasia (OR, 1.52, 95% CI 1.22-1.90). CONCLUSION Among preterm VLBW twins, poor intrauterine growth and surgical interventions for NEC and PDA were associated with high odds for ROP. This study does not support an association of fertility treatments with increased risk for ROP.
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Affiliation(s)
- Rachel Shemesh
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Goldschleger Eye Institute, Sheba Medical Center, Tel-Hashomer, Israel
| | - Tzipi Strauss
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Department of Neonatology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel-Hashomer, Israel
| | - Inna Zaslavsky-Paltiel
- Women and Children's Health Research Unit, Gertner Institute, Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Liat Lerner-Geva
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Women and Children's Health Research Unit, Gertner Institute, Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Brian Reichman
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Women and Children's Health Research Unit, Gertner Institute, Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Tamara Wygnanski-Jaffe
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
- Goldschleger Eye Institute, Sheba Medical Center, Tel-Hashomer, Israel.
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Lu F, Chen Q, Tang Y, Yao D, Yin Y, Liu Y. Image-free recognition of moderate ROP from mild with machine learning algorithm on plasma Raman spectrum. Exp Eye Res 2024; 239:109773. [PMID: 38171476 DOI: 10.1016/j.exer.2023.109773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 12/17/2023] [Accepted: 12/28/2023] [Indexed: 01/05/2024]
Abstract
The retinopathy of prematurity (ROP) can cause serious clinical consequences and, fortunately, it is remediable while the time window for treatment is relatively narrow. Therefore, it is urgent to screen all premature infants and diagnose ROP degree timely, which has become a large workload for pediatric ophthalmologists. We developed a retinal image-free procedure using small amount of blood samples based on the plasma Raman spectrum with the machine learning model to automatically classify ROP cases before medical intervention was performed. Statistical differences in infrared Raman spectra of plasma samples were found among the control, mild (ZIIIS1), moderate (ZIIIS2 & ZIIS1), and advanced (ZIIS2) ROP groups. With the different wave points of Raman spectra as the inputs, the outputs of our support vector machine showed that the area under the curves in the receiver operating characteristic (AUC) were 0.763 for the pair comparisons of the control with the mild groups, 0.821 between moderate and advanced groups (ZIIS2), while more than 90% in comparisons of the other four pairs: control vs. moderate (0.981), control vs. advanced (0.963), mild vs. moderate (0.936), and mild vs. advanced (0.953), respectively. Our study could advance principally the ROP diagnosis in two dimensions: the moderate ROPs have been classified remarkably from the mild ones, which leaves more time for the medical treatments, and the procedure of Raman spectrum with a machine learning model based on blood samples can be conveniently promoted to those hospitals lacking of the pediatric ophthalmologists with experience in reading retinal images.
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Affiliation(s)
- Fang Lu
- Department of Ophthalmology, West China Hospital, Sichuan University, 37# Guo Xue Xiang Rd, Chengdu, China
| | - Qin Chen
- Department of Ophthalmology, West China Hospital, Sichuan University, 37# Guo Xue Xiang Rd, Chengdu, China
| | - Yezhong Tang
- Chengdu Institute of Biology, Chinese Academy of Sciences, 4-9 South Renmin Rd, Chengdu, China
| | - Dezhong Yao
- University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, Chengdu, China
| | - Yu Yin
- Chengdu Pano AI Intelligent Technology Co., Ltd., 200 Tianfu Fifth Street, Chengdu, China.
| | - Yang Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences, 4-9 South Renmin Rd, Chengdu, China.
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Rasoulinejad SA, Kiyamehr P. The Determinative Role of Cytokines in Retinopathy of Prematurity. Curr Mol Med 2023; 23:36-43. [PMID: 35078395 DOI: 10.2174/1566524022666220117114920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 12/16/2022]
Abstract
Retinopathy of prematurity (ROP) is a neonatal disease corresponding to vision impairment and blindness. Utilizing the pathogenesis of ROP and the risk factors affecting its progression can help prevent and reduce its incidence and lead to the emergence and development of new treatment strategies. Factors influencing retinopathy include growth and inflammatory factors that play an essential role in the pathogenesis of the ROP. This review summarizes the most critical factors in the pathogenesis of ROP.
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Affiliation(s)
- Seyed Ahmad Rasoulinejad
- Department of Ophthalmology, Ayatollah Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran
| | - Pegah Kiyamehr
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Iran University of Medical Sciences, Tehran, Iran
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[Risk factors for recurrence after intravitreal anti-vascular endothelial growth factor injection for retinopathy of prematurity]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2022; 24:1207-1212. [PMID: 36398545 PMCID: PMC9678068 DOI: 10.7499/j.issn.1008-8830.2205011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVES To investigate the efficacy of intravitreal anti-vascular endothelial growth factor (anti-VEGF) injection in the treatment of retinopathy of prematurity (ROP) and the risk factors for recurrence. METHODS A retrospective analysis was performed on the medical data of 159 infants with ROP who were born in the First Affiliated Hospital of Zhengzhou University and underwent anti-VEGF treatment from January 2016 to December 2021. According to the presence or absence of recurrence within the follow-up period after initial anti-VEGF treatment, they were divided into a recurrence group with 24 infants and a non-recurrence group with 135 infants. The medical data were compared between the two groups, and a multivariate logistic regression analysis was used to investigate the risk factors for the recurrence of ROP after anti-VEGF treatment. RESULTS After one-time anti-VEGF treatment, all 159 infants showed regression of plus disease. Recurrence was observed in 24 infants (15.1%) after anti-VEGF treatment, with a mean interval of (8.4±2.6) weeks from treatment to recurrence. The multivariate logistic regression analysis showed that preoperative fundus hemorrhage and prolonged total oxygen supply time were risk factors for the recurrence of ROP (P<0.05), while gestational hypertension was a protective factor (P<0.05). CONCLUSIONS Intravitreal anti-VEGF injection is effective for ROP. Preoperative fundus hemorrhage and long duration of oxygen therapy may increase the risk of ROP recurrence, and further studies are needed to investigate the influence of gestational hypertension on the recurrence of ROP.
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Dysregulated genomic and coding-transcriptomic factors in retinopathy of prematurity. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Association of Microalbuminuria and Bevacizumab Therapy Outcomes in Diabetic Retinopathy Patients. Nephrourol Mon 2021. [DOI: 10.5812/numonthly.118972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Diabetic retinopathy (DR) is a visual impairment-related eye disease developed by long-term hyperglycemic status. Diabetic condition in DR patients leads to diabetic organopathies (e.g., renal failure). Albuminuria, as a hallmark of renal failure, can be correlated with visual indicators in DR patients. Objectives: This study aimed to investigate the role of albuminuria status in visual acuity (VA) and bevacizumab therapy outcomes in DR patients. Methods: In this retrospective study, 48 DR patients were admitted to the Ophthalmology Center of Ayatollah Rouhani Hospital, affiliated with Babol University of Medical Sciences, Babol, Iran. The retinopathy status and VA were identified before and after treatment through 45 days of bevacizumab therapy. In addition, fast blood sugar, hemoglobin A1c, urine albumin, and urine creatinine were evaluated using standard laboratory methods. Results: The VA value before treatment in microalbuminuric DR patients (0.106 ± 0.036) was significantly lower than non-microalbuminuric DR patients (0.347 ± 0.286; P < 0.001). Furthermore, VA value after treatment in microalbuminuric DR patients (0.115 ± 0.071) was significantly lower than non-microalbuminuric DR patients (0.355 ± 0.272; P < 0.001). There was no significant difference in the percentage of VA increase between microalbuminuric and non-microalbuminuric patients. Moreover, the albumin-to-creatinine ratio (ACR) was correlated with a lower VA level before and after treatment (P < 0.001 for both). There was no correlation between the percentage of VA increase with ACR, albumin, and creatinine. Conclusions: The current study results showed that different VA before and after bevacizumab therapy status was correlated with microalbuminuria status. Additionally, microalbuminuria status did not affect the percentage of VA increase in the treatment of DR patients.
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Bahmani T, Karimi A, Rezaei N, Daliri S. Retinopathy prematurity: a systematic review and meta-analysis study based on neonatal and maternal risk factors. J Matern Fetal Neonatal Med 2021; 35:8032-8050. [PMID: 34256661 DOI: 10.1080/14767058.2021.1940938] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Retinopathy of prematurity is the abnormal development of retinal arteries in preterm neonates less than 32 weeks and weighing 1500 g, and less, which can lead to visual impairment during life and blindness. This study aims to investigate the relationship between some clinical characteristics of neonates and mothers with Retinopathy of prematurity in the world via a systematic review and meta-analysis. MATERIALS AND METHODS The present study is a systematic review and meta-analysis on the relationship between maternal and neonatal clinical variables with Retinopathy of prematurity in the world from the beginning of 2000 to the end of 2020. Accordingly, all English articles published on the topic were searched in scientific databases of Web of Science, PubMed, Google Scholar, Science Direct, and Scopus. The articles were searched independently by two researchers. Statistical analysis of data was performed using fixed and random effects model statistical tests in the meta-analysis, Cochran, meta-regression, I2 index, Funnel plot, and Begg's by STATA software program, version 14. RESULT A total of 191 studies with a sample size of 140,921 persons were including in the meta-analysis. Accordingly, Preterm delivery ≤28 weeks (OR:6.3, 95% CI:4.9-8.1), Birth Weight ≤1000 g (OR:5.8, 95% CI:4.8-6.8), Birth Weight ≤1500 g (OR:4.8, 95% CI:3.8-6.1), PROM (OR:1.2, 95% CI:1.0-1.4), induced fertility (OR:1.9, 95% CI:1.1-3.0) and Chorioamnionitis (OR:1.5, 95% CI:1.0-2.2) There was a statistically significant association with retinopathy. CONCLUSION Based on the results of the present meta-analysis, the risk of retinopathy of prematurity in neonates born at 28 weeks and less, LBW (weight 1500 g and less), neonatal hypotension, chorioamnionitis, and induced fertility increases.
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Affiliation(s)
- Tahereh Bahmani
- School Medicine, Ilam University of Medical Science, Ilam, Iran
| | - Arezoo Karimi
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nazanin Rezaei
- Department of Midwifery, Faculty of Nursing and Midwifery, Ilam University of Medical Sciences, Ilam, Iran
| | - Salman Daliri
- Clinical Research Development Unit, Imam Hossein Hospital, Shahroud University of Medical Sciences, Shahroud, Iran
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Yang MC, Hsiao HF, Tseng HL, Chiu YW, Weng YH. Aerosol therapy in relation to retinopathy of prematurity in mechanically ventilated preterm infants. BMC Pulm Med 2019; 19:145. [PMID: 31409326 PMCID: PMC6693186 DOI: 10.1186/s12890-019-0912-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 08/02/2019] [Indexed: 11/28/2022] Open
Abstract
Background Aerosol administration is increasingly being used as a therapeutic intervention for mechanically ventilated preterm infants. However, the effects of inhalation therapy on retinopathy of prematurity (ROP) have not yet been explored. Methods A retrospective cohort study was conducted in a tertiary level neonatal intensive care unit (NICU) from 2011 to 2013. All preterm infants with a gestational age (GA) of 24~29 weeks receiving invasive intubation for more than 1 week in the NICU were included. Infants with severe congenital anomalies were excluded. ROP was defined as stage II or greater according to medical records by ophthalmologists. A multivariate logistic regression model was used to estimate the risk of ROP in relation to inhalation therapy after adjusting for confounders. Results In total, 205 infants were enrolled in this study, including 154 with inhalation therapy and 51 without inhalation therapy. Univariate analyses showed an association of inhalation with the following characteristics: sex (p = 0.047), GA (p = 0.029), sepsis (p = 0.047), bronchopulmonary dysplasia (BPD) (p < 0.001), and ROP (p = 0.001). Furthermore, logistic regression analysis indicated that inhalation therapy was an independent risk factor for ROP (odds ratio (OR) = 2.639; 95% confidence interval (CI) = 1.050~6.615). In addition, infants with a GA of 24~25 weeks (OR = 6.063; 95% CI = 2.482~14.81) and 26~27 weeks (OR = 3.825; 95% CI = 1.694~8.638) were at higher risk of ROP than those with a GA of 28~29 weeks. Other factors – including sex, sepsis, BPD, and delivery mode – did not carry significant risk. Conclusion Aerosol therapy with pure oxygen delivery is associated with ROP. Clinicians should exercise great caution when conducting aerosol therapy with excess oxygen in mechanically ventilated preterm infants.
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Affiliation(s)
- Mei-Chin Yang
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Hsiu-Feng Hsiao
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Hsiu-Li Tseng
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Ya-Wen Chiu
- Master Program in Global Health and Development, College of Public Health, Taipei Medical University, Taipei, Taiwan
| | - Yi-Hao Weng
- Department of Respiratory Therapy, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan. .,Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 199 Dunhua North Road, Taipei, 105, Taiwan.
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Kim SJ, Port AD, Swan R, Campbell JP, Chan RVP, Chiang MF. Retinopathy of prematurity: a review of risk factors and their clinical significance. Surv Ophthalmol 2018; 63:618-637. [PMID: 29679617 DOI: 10.1016/j.survophthal.2018.04.002] [Citation(s) in RCA: 280] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/05/2018] [Accepted: 04/09/2018] [Indexed: 01/09/2023]
Abstract
Retinopathy of prematurity (ROP) is a retinal vasoproliferative disease that affects premature infants. Despite improvements in neonatal care and management guidelines, ROP remains a leading cause of childhood blindness worldwide. Current screening guidelines are primarily based on two risk factors: birth weight and gestational age; however, many investigators have suggested other risk factors, including maternal factors, prenatal and perinatal factors, demographics, medical interventions, comorbidities of prematurity, nutrition, and genetic factors. We review the existing literature addressing various possible ROP risk factors. Although there have been contradictory reports, and the risk may vary between different populations, understanding ROP risk factors is essential to develop predictive models, to gain insights into pathophysiology of retinal vascular diseases and diseases of prematurity, and to determine future directions in management of and research in ROP.
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Affiliation(s)
- Sang Jin Kim
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA; Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Alexander D Port
- Department of Ophthalmology, Weill Cornell Medical College, New York, New York, USA
| | - Ryan Swan
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon, USA
| | - J Peter Campbell
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - R V Paul Chan
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, Illinois, USA; Center for Global Health, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Michael F Chiang
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA; Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon, USA.
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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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Maroufizadeh S, Almasi-Hashiani A, Omani Samani R, Sepidarkish M. Prevalence of retinopathy of prematurity in Iran: a systematic review and Meta-analysis. Int J Ophthalmol 2017; 10:1273-1279. [PMID: 28861355 DOI: 10.18240/ijo.2017.08.15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 01/13/2017] [Indexed: 12/22/2022] Open
Abstract
AIM To estimate overall prevalence of retinopathy of prematurity (ROP) in Iran using a systematic review and Meta-analysis. METHODS A systematic review and Meta-analysis was performed of all published studies pertaining to prevalence of ROP using international and national electronic databases (ISI Web of Sciences, PubMed, Scopus, Google Scholar, SID, MagIran, and IranMedex) from their inception until May 2016 with standard keywords. Begg and Egger tests were used to examine the publication bias and Cochran test and I2 statistics were used to evaluate the statistical heterogeneity. Pooled estimate of the prevalence of ROP were calculated using random effects Meta-analysis. RESULTS The publication bias assumption was rejected by Egger tests with P-value equal to 0.024. The results of Cochran test and I2 statistics revealed substantial heterogeneity (Q=1099.02, df=25, I2=97.7%, P=0.001). The overall prevalence of ROP using the random effect model in Iran was 26.1% (95% CI: 20.3%-31.8%). CONCLUSION The prevalence of ROP is relatively high in Iran. Low birth weight and gestational age are significant risk factors for the disease. Improved care, including oxygen delivery and monitoring, for preterm babies in all facility settings would reduce the number of babies affected with ROP.
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Affiliation(s)
- Saman Maroufizadeh
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - Amir Almasi-Hashiani
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - Reza Omani Samani
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - Mahdi Sepidarkish
- Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
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