Question 60

Visual acuity is described as the ability to see fine detail clearly.

Infants typically achieve 20/20 vision by their first birthday, which indicates that their visual acuity has developed to a level where they can see at a distance what is normally expected for their age. This capability is a critical aspect of their overall visual development.

A) Pattern perception

Pattern perception refers to the ability to recognize and interpret complex visual patterns and shapes. While this is an important element of visual processing, the statement specifically highlights visual acuity, which is distinct from merely recognizing patterns.

B) Depth perception

Depth perception is the ability to perceive the world in three dimensions and judge distances between objects. Although this skill is crucial for overall visual development, it is not directly related to the clarity of vision described by achieving 20/20 vision.

C) Visual acuity

Visual acuity is the measure of the eye's ability to resolve fine details and is assessed by the clarity of vision at a distance. The statement indicates that infants possess 20/20 vision by age one, which is a clear definition of visual acuity, thereby making this option correct.

D) Tracking

Tracking involves the ability to follow moving objects smoothly with the eyes. While it is an essential part of visual skills, the development of tracking ability does not pertain to the clarity of vision that is indicated by the 20/20 standard.

E) Size constancy

Size constancy is the perceptual ability to recognize that an object’s size remains constant, despite changes in distance. This concept does not relate to visual acuity, which focuses on the clarity of vision rather than the perception of size.

Conclusion

Visual acuity is definitively the correct answer as it directly correlates with the ability to see clearly at a distance, which is what the statement regarding 20/20 vision describes. Other options, while relevant to different aspects of visual development, do not address the specific measure of clarity and detail resolution that visual acuity represents.