At what age does a healthy child typically achieve a visual acuity of 20/20?

A healthy child typically achieves a visual acuity of 20/20 by around age six. This milestone is significant in the development of a child's visual system, as it marks the point where they have refined their ability to see clearly and distinguish details at a distance, which is critical for learning and engaging with their environment.

By age six, the majority of children have developed the neural processing capabilities necessary for complex visual tasks. This is also the age when children enter formal schooling, where good visual acuity becomes essential for reading and visual learning. Prior to this age, children may have varying degrees of visual acuity, often demonstrating improvement as their eyes and brain mature. While some children may reach 20/20 vision slightly earlier or later, age six is the commonly accepted benchmark for this level of visual development.