Researchers are studying the eyes of premature infants using wide-field fundus imaging to analyze biometric measurements such as disc-fovea distance and optic disc diameter. This research appears to be part of a broader effort to understand eye development and disease in various populations, including those with retinopathy of prematurity and myopia. The studies also seem to be exploring the relationships between different eye measurements and conditions, including glaucoma and optic nerve hypoplasia.