Pregnancy Day 22: Eyes begin to develop At birth: can see very little and cannot see beyond 20cm. Two weeks: can recognize the shape and color of larger objects. 2 months: the range of vision increases significantly, and the left and right eyes can follow the movements of people at the same time. 3 months: can follow the movement of small objects, can also identify a variety of different colors. 4 months: Can look at their hands and reach out to touch what they see. 6 months: Both eyes can be brought into focus. At this stage, the eyeballs are gradually maturing and can distinguish different directions up, down, left and right, and the establishment of three-dimensional sense is nearly complete. 9 months: Visual acuity is about 0.1. 1 year: Visual acuity is about 0.2 and the width of the visual field is slowly approaching that of an adult. 3 years old: Visual acuity reaches about 0.6~0.8, and by the time they are about 3 years old, they have fine visual reflex movements. Around 5 years of age: visual acuity reaches 1.0.