At what age have infants been shown to achieve 20/20 vision with pattern VEP testing (an objective measure)?

At what age have infants been shown to achieve 20/20 vision with pattern VEP testing (an objective measure)?

• A. One Month Old
• B. Six Months Old
• C. One Year Old
• D. Three Years Old

Answer: (B)

Pattern VEP testing measures how the visual system responds to patterned stimuli by recording the brain’s electrical response, giving an objective estimate of acuity in infants who can’t reliably indicate what they see. As the visual pathways mature, the smallest pattern that still elicits a reliable response becomes finer, and this tends to reach 20/20 by about half a year of age. In infancy before that point, acuity is typically poorer, and after this period it can remain at or exceed 20/20 as development continues. So the age at which 20/20 is most consistently observed with pattern VEP is around six months of age.

Pattern VEP testing measures how the visual system responds to patterned stimuli by recording the brain’s electrical response, giving an objective estimate of acuity in infants who can’t reliably indicate what they see. As the visual pathways mature, the smallest pattern that still elicits a reliable response becomes finer, and this tends to reach 20/20 by about half a year of age. In infancy before that point, acuity is typically poorer, and after this period it can remain at or exceed 20/20 as development continues. So the age at which 20/20 is most consistently observed with pattern VEP is around six months of age.