US Department of Health and Human Services. Facts About Retinopathy of Prematurity (ROP). National Eye Institute. https://nei.nih.gov/health/rop/rop. Last reviewed June 2014. Accessed March 16, 2017.
Retinopathy of Prematurity. American Association for Pediatric Ophthalmology and Strabismus. https://aapos.org/terms/conditions/94. 06/2016. Accessed March 16, 2017.
Janigian R. What Is Retinopathy of Prematurity (ROP)? American Academy of Ophthalmology. https://www.aao.org/eye-health/diseases/what-is-retinopathy-prematurity. March 1, 2016. Accessed March 16, 2017.