BACKGROUND: Several studies reported on various aspects of visual function at term age and in the first months after birth but less has been reported in preterm infants before they reach termequivalent age. AIMS: To assess the suitability of a battery of tests of visual function for use in infants born at <33weeks gestation (GA) and assessed before 34weeks post-menstrual age (PMA); to evaluate the distribution of the findings according to GA, and to compare the data with those previously published on preterm infants assessed at 35weeks PMA. STUDY DESIGN: Cross-sectional study. SUBJECTS: Sixty-four preterm infants with a GA <33weeks were studied. OUTCOME MEASURES: We used a battery of visual function tests previously validated at 35 and 40weeks PMA in low-risk preterm infants. All the infants in this current study underwent the same assessment before 34weeks PMA. RESULTS: Before 31weeks PMA most infants could not be reliably assessed because of clinical instability, whilst after 31weeks PMA most infants could be assessed and they showed progressive maturation in their responses with PMA. Some items (spontaneous ocular motility, horizontal tracking, tracking a coloured stimulus, and ocular fixation) showed similar results at 32-33weeks PMA to those found in low-risk preterm at 35weeks PMA. Ocular movements to a target and arc tracking were the items with the most immature responses. CONCLUSIONS: Our results provide further evidence that a structured assessment of visual function can be used in clinical routine and for research purposes in infants as young as 31weeks PMA.
BACKGROUND: Several studies reported on various aspects of visual function at term age and in the first months after birth but less has been reported in preterm infants before they reach termequivalent age. AIMS: To assess the suitability of a battery of tests of visual function for use in infants born at <33weeks gestation (GA) and assessed before 34weeks post-menstrual age (PMA); to evaluate the distribution of the findings according to GA, and to compare the data with those previously published on preterm infants assessed at 35weeks PMA. STUDY DESIGN: Cross-sectional study. SUBJECTS: Sixty-four preterm infants with a GA <33weeks were studied. OUTCOME MEASURES: We used a battery of visual function tests previously validated at 35 and 40weeks PMA in low-risk preterm infants. All the infants in this current study underwent the same assessment before 34weeks PMA. RESULTS: Before 31weeks PMA most infants could not be reliably assessed because of clinical instability, whilst after 31weeks PMA most infants could be assessed and they showed progressive maturation in their responses with PMA. Some items (spontaneous ocular motility, horizontal tracking, tracking a coloured stimulus, and ocular fixation) showed similar results at 32-33weeks PMA to those found in low-risk preterm at 35weeks PMA. Ocular movements to a target and arc tracking were the items with the most immature responses. CONCLUSIONS: Our results provide further evidence that a structured assessment of visual function can be used in clinical routine and for research purposes in infants as young as 31weeks PMA.
Authors: Joanne M George; Roslyn N Boyd; Paul B Colditz; Stephen E Rose; Kerstin Pannek; Jurgen Fripp; Barbara E Lingwood; Melissa M Lai; Annice H T Kong; Robert S Ware; Alan Coulthard; Christine M Finn; Sasaka E Bandaranayake Journal: BMC Pediatr Date: 2015-09-16 Impact factor: 2.125
Authors: Rafael Ceschin; Jessica L Wisnowski; Lisa B Paquette; Marvin D Nelson; Stefan Blüml; Ashok Panigrahy Journal: Neuroimage Clin Date: 2015-06-04 Impact factor: 4.881
Authors: Verena I Carrara; Mue Chae Darakomon; Nant War War Thin; Naw Ta Kaw Paw; Naw Wah; Hser Gay Wah; Naw Helen; Suporn Keereecharoen; Naw Ta Mlar Paw; Podjanee Jittamala; François H Nosten; Daniela Ricci; Rose McGready Journal: PLoS One Date: 2016-06-14 Impact factor: 3.240