TABLE 4.

Stimulus-specific VOF parameter values and the concurrent N and % of abnormal results compared to the age-matched normative references, in the total group of preterm children at 1 year CA.

Stimulus parameter	Median [IQR]	N (%) abnormal
Cartoon GFA (deg)	1.98 [0.67]	12 (25%)
FD (ms)	1,304 [1,073]	7 (15%)
RTF (ms)	208 [76]	3 (6%)
RTvar (ms)	48 [39]	7 (15%)
Contrast RTF (ms)	432 [122]	6 (13%)
RTvar (ms)	42 [52]	7 (15%)
Motion RTF (ms)	707 [278]	5 (10%)
RTvar (ms)	97 [100]	12 (25%)
Form RTF (ms)	1,098 [450]	4 (8%)
RTvar (ms)	166 [152]	6 (13%)

VOF, visual orienting functions; CA, corrected age; IQR, interquartile range; GFA, gaze fixation area; FD, fixation duration; RTF, reaction time to fixation; RTvar, reaction time variability.