Functional and Structural Findings in Infants Treated for Retinopathy of Prematurity Using Optical Coherence Tomography Angiography

BACKGROUND AND OBJECTIVE: To assess the foveal microvascular structure of children with retinopa-thy of prematurity (ROP) treated with diode laser photocoagulation using optical coherence tomogra-phy angiography (OCTA). PATIENTS AND METHODS: OCTA was performed at a tertiary medical center in 17 children (27 eyes) aged 4 to 16 years with a history of diode laser pho-tocoagulation treated ROP. OCTA parameters were compared with those of 12 healthy age-matched controls (23 eyes) attending the orthoptics clinic and correlated with clinical factors. RESULTS: Compared with controls, the ROP group had a smaller foveal avascular zone area (P < .001), lower deep vascular plexus density (P < .001), lower flow density (P = .025), and greater central macular thickness (P < .001). High intraventricular hemorrhage grade correlated with smaller foveal avascular zone area (P = .008) and greater inner macular thickness (P = .047). There was no impact of gestational age, birth weight, or refractive status. CONCLUSION: OCTA can identify significant quan-tifiable long-term macular microvascular and struc-tural changes in this patient population.