Frame childrens eyeglasses are an important part of myopia prevention and control for teenagers. With the deepening of research on myopia mechanisms, more and more technology is being used in lens design and production, which has also played an increasingly good role in myopia control.
Adjustment amplitude refers to focusing on the far point when the eyes are completely resting, and focusing on the near point when using maximum adjustment force. In this case, the difference in refractive power is expressed in terms of the magnitude of adjustment.
When the eyes become nearsighted, the adjustment force used with or without children's eyeglasses is lower than that of normal eyes, and it is more pronounced without glasses. Long-term use of adjustment force is minimal or almost non-existent when looking up without glasses, and only a combination is needed.
After using progressive films to control myopia in adolescents, long-term relaxation of regulation can lead to a decrease in the amplitude of regulation, ultimately resulting in visual problems of insufficient regulation, which in turn can lead to an inability to maintain long-term regulation.
For individuals with normal positive and negative relative adjustment, the use of adolescent myopia control progressive film is due to the artificial relaxation adjustment, which changes the middle position of the positive and negative relative adjustment when the eyes approach, resulting in a decrease in the flexibility of adjustment. Positive relative adjustment is more suitable for controlling progressive myopia in adolescents than negative relative adjustment.
When wearing progressive kids eyeglasses near me lenses for myopia control, it is necessary to systematically check the AC/A ratio, eye position, adjustment amplitude, and positive and negative relative adjustment. If the AC/A ratio is high, esotropia, or if the positive relative adjustment is higher than the negative relative adjustment, it is more suitable to use progressive lenses for adolescent myopia control.
