Healthy Little Eyes

HIE Neonate Inclusion Criteria: * Inpatient Neonates diagnosed with HIE * Pediatric patients who are less than 78 hours of age at the time of enrollment * Participants whose parent/legal guardian is able to complete consenting process in English HIE Neonate Exclusion Criteria: * Participants with prenatally diagnosed or congenital brain and/or eye abnormalities not associated with HIE, including but not limited to microphthalmia, anophthalmia, congenital cataract, eye or eyelid coloboma, congenital glaucoma, CMV retinitis, optic nerve hypoplasia, aniridia, cryptophthalmos, globe abnormalities * Participants who have a known central nervous system illness other than HIE, including but not limited to congenital brain malformations or congenital hydrocephalus * Participants whose parent/legal guardian is unable to provide informed consent, including participants who are in foster care, participants within state custody, and participants of minor parents Waisman, AFCH NBFU, or CERU Clinic HIE Patient Inclusion Criteria: * Pediatric patients who have a diagnosis of HIE and present to the Newborn Follow Up Clinic * Pediatric patients who are less than 36 months of age at the time of enrollment * Participants whose parent/legal guardian is able to complete consenting process in English Waisman, AFCH NBFU, or CERU Clinic HIE Patient Exclusion Criteria: * Participants with prenatally diagnosed or congenital brain and/or eye abnormalities not associated with HIE, including but n…