Risk Factors for Nearsightedness during early Life, Childhood and Adolescence

Nearsightedness is an essential public health issue that affects people worldwide. Nearsightedness is becoming more common, posing a significant socioeconomic burden. High nearsightedness that worsens over time might result in sight-threatening ocular problems. As a result, it's critical to avoid early-onset nearsightedness from escalating to high pathological nearsightedness. According to recent epidemiological studies, increased outside time is a significant modifiable environmental component that prevents young children against nearsightedness: outdoor light intensity, chromaticity during the day, and Vit. D levels may all play a role in this protective effect. This article summarises the possible protective relation between outdoor duration and nearsightedness. In light of new research, various environmental risk factors like near-work activities, the season of birth, smoking habits in parents, and birth order are also explored. This will allow for the implementation of preventative measures such as health education. Nearsightedness has grown significantly more widespread in recent decades, with certain highly educated groups, like students of law and medical fraternity, having nearsightedness rates of up to 80%. An increase in the number of instances of a high level of nearsightedness has been seen, which corresponds to the growth in nearsightedness. Myopia is said to be caused by multiple etiologies , High nearsightedness in early life is associated with high nearsightedness prevalence later in adulthood. Environmental variables such as greater academic pressure, more desk vocations, and urbanisation may be major drivers in current school nearsightedness trends, as seen by the rapid growth in nearsightedness prevalence observed in several parts of the world.