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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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ORIGINAL ARTICLE
Year : 2013  |  Volume : 20  |  Issue : 1  |  Page : 66-71

Type I retinopathy of prematurity in infants with birth weight less than 1251 g: Incidence and risk factors for its development in a nursery in Kuwait


1 Department of Ophthalmology, Al-Adan Hospital, Hadiya, Kuwait
2 Department of Neonatology, Al-Adan Hospital, Hadiya, Kuwait; Department of Paediatrics, Neonatal Division, McMaster University Medical Centre, Hamilton Ontario, Canada
3 Al-Bahar Ophthalmology Centre, Shuwaikh, Kuwait
4 Department of Neonatology, Al-Adan Hospital, Hadiya, Kuwait
5 Department of Ophthalmology, Al-Adan Hospital, Hadiya, Kuwait; Department of Ophthalmology, University of Toronto, Toronto, Canada
6 Department of Community Medicine, Faculty of Medicine, Kuwait University, Jabriya, Kuwait

Correspondence Address:
Vivek B Wani
PO Box 17672, Khaldiya, PC Code 72457
Kuwait
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-9233.106393

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Purpose: To report the rate of acute retinopathy of prematurity (ROP) and Type I ROP among infants with birth weight (BW) <1251 g and identify the risk factors for the development of Type I ROP. Materials and Methods: A retrospective review of ROP records of infants with BW <1251 g was performed to identify infants with acute ROP and Type I ROP. Infants with Type I ROP were compared with those without Type I ROP to assess the risk factors for the development of Type I ROP. P < 0.05 was statistically significant. Multivariate analysis was performed and odds ratio (OR) and 95% confidence intervals (CI) were calculated. Results: Among the 207 infants with BW <1251 g, acute ROP occurred in 154 infants (74.4%) and Type I ROP in 95 eyes of 50 infants (24.4%). The numbers of infants with BW <750 g and BW <1000 g were 19.3% and 58.4%, respectively, and the incidences of Type I ROP were 50% and 36.4%, respectively, among them. Forty-four (46.3%) eyes were treated at stage 2+ ROP in zone I or II. All the eyes treated for Type I ROP showed complete regression. Gestational age at birth (OR 0.657, 95% CI: 0.521-0.827; P < 0.0001) and number of ventilated days (OR 1.017, 95% CI: 1.005-1.029; P = 0.006) were identified as independent risk factors for the development of Type I ROP. Conclusions: The rate of Type I ROP in this study is higher than that in previous studies due to the higher number of infants with BW <1000 g in our cohort and the treatment of more eyes with stage 2+ ROP. However, all the treated eyes had a favorable outcome. Gestational age at birth and number of ventilated days were independent risk factors for the development of Type I ROP.


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