Children playing with magnifying glasses normally will not affect their eyesight, but if children look through magnifying glasses to see sunlight and other strong light sources, they may burn the retina and affect their eyesight. Magnifying glass, also known as convex lens, the main role is to magnify the object, children play magnifying glass to see some small objects, and will not affect the development of the eyes, and will not cause myopia, so it will not affect vision, and will not jeopardize the health of the eyes, there is no need to worry. However, if the child does not use the magnifying glass correctly, for example, through the magnifying glass to gaze at the sun and other strong light sources, it may lead to retinal burns, it will cause serious vision loss. Therefore, it is important to teach your child to use a magnifying glass correctly.