Preferential looking vision testing: application to evaluation of high-risk, prematurely born infants and children.
Manning KA, Fulton AB, Hansen RM, Mayer DL, Petersen RA, Barg DC. Preferential looking vision testing: application to evaluation of high-risk, prematurely born infants and children. J Pediatr Ophthalmol Strabismus. 1982 Nov-Dec; 19(6):286-93.