Developmental aspects of the Brückner test.
Normal infants ranging from newborn to 10 months of age were examined in order to study age-related variation in the behavior of the fundus reflexes seen in the course of performing the Brückner test. Most infants 8 months of age and older show the characteristic symmetric dimming of the fundus reflexes in both eyes occurring with central fixation. Neonates and most infants younger than 2 months of age do not show dimming of the fundus reflex with fixation, probably due to an inability to accommodate accurately. Between 2 and 8 months of age, up to 28% of infants have asymmetric dimming of the fundus reflexes in the two eyes. In contrast to older children in which this is a pathologic finding, asymmetric fundus reflexes occurring in this age range may represent a normal stage of development.
Archer
S M
SM
Department of Ophthalmology, Indiana University School of Medicine.
D000367:Age Factors; D005654:Fundus Oculi / Q000254:growth & development*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012018:Reflex / Q000502:physiology*; D013285:Strabismus / Q000175:diagnosis*; D015348:Vision, Binocular