From an infant to an adult, the changes keep happening in every inch of our skin, and of course including the vision. People don’t have a clear vision as long as they were born, as it takes time to grow up. During the growth and development of children, their vision can be vulnerable and easily affected by a lot of factors. For instance, children before 7 years old are likely to get strabismus, as well as farsightedness, nearsightedness, astigmatism, and amblyopia, and these situations need to be found and treated timely in order to avoid permanent vision loss. This is also why good behaviors of eye use should be fostered as soon as possible in childhood.