Prenatal and Postnatal Ocular Abnormalities Following Congenital Zika Virus Infections: A Systematic Review

Abstract

ABSTRACT Objective To assess fetal and neonatal eyes abnormalities and their progression during the last ZIKV outbreak and summarize learned lessons. Methods A systematic review and meta-analysis was conducted by a team of obstetricians and ophthalmologists. Results Studies reporting ocular abnormalities during the prenatal (n = 5) and postnatal (n = 24) periods were included in the analysis. In the prenatal period, the most common ocular findings were intraocular calcification cases (4/6, 66.6%) and microphthalmia (3/6, 50%). Postnatal ocular abnormalities of congenital ZIKV infection were described after birth in 479 cases. Among them microphthalmia was reported in 13 cases (13/479, 2.7%). Posterior segment (retina and optic nerve) was the most affected structure, consisting of pigmentary changes (229/479, 47.8%), macular chorioretinal atrophy (216/479, 45%), optic nerve atrophy (181/479, 37.8%), increased cup-to-disk ratio (190/479, 39.6.%), optic nerve hypoplasia (93/479,19.4%), vascular changes (26/479, 5.4%), and retinal coloboma (20/479, 4.1%). The anterior segment was involved in 4.6% (22/479) of cases, including cataract (9/479, 1.8%), lens subluxation (1/479, 0.2%), iris coloboma (5/479, 1%), and congenital glaucoma (7/479, 1.4%). These ocular anomalies were isolated in one case (1/479, 0.2%) and multiple anomalies were found in the other cases. Long-term visual disorders have been described, with no possible improvement and even a worsening of some of the ocular anomalies previously observed. No reactivation of ocular lesions was observed. Conclusion This review highlights the severe ocular abnormalities associated with congenital ZIKV infections. The importance of multidisciplinary communication between the obstetrician, the maternal-fetal medicine specialist, and the ophthalmologist is emphasized. Protocol registration This systematic review was registered with the International Prospective Register of Systematic Reviews (PROSPERO), registration440 188.