What should I pay attention to when wearing glasses for children_

What should I pay attention to when wearing glasses for children?

What should I pay attention to when wearing glasses for children? With the increasing popularity of electronic products and the increasing pressure of learning, the myopia population in China is gradually showing a younger age. The child's eyes begin to blur and he can't see the blackboard clearly, and many parents take their children to the optical store to get a pair of glasses directly, is this correct? Xiao Ke will introduce to you below: children's glasses. What should I pay attention to when wearing glasses for children? 1. Children have to go to the hospital for examination for the first time with glasses: distinguish between true and false myopia True and false myopia On the surface, pseudomyopia and true myopia have the same performance, that is, they can see far and blur, and see near clearly. Pseudomyopia is caused by excessive use of the eye, which causes the ciliary muscle to contract and spasm, and the lens thickness increases, and the vision is blurred. Pseudomyopia is a form of functional myopia that relaxes muscles, relieves fatigue and restores vision to a normal state through physical methods or by strengthening the eye muscles by the patient himself. If pseudomyopia is not relieved in time, the eyeball will be compressed by the tense extraocular muscles for a long time, which will eventually lead to the enlargement of the eye axis and become true myopia. True myopia, also known as axial myopia, is caused by not paying attention to eye hygiene, which makes the anterior and posterior diameter of the eye (i.e., the eye axis) longer (more than the normal average of 24mm), so that after the parallel light enters the eyeball, the focus falls in front of the retina and cannot be clearly imaged. 2. Computer optometry cannot be used as the basis for glasses The computer is subject to temperature, humidity, its own accuracy and other reasons, the error is large, the adolescent eye adjustment ability is strong, and the computer is only an objective optometry method can not represent subjective judgment and other factors. Your child's spectacle prescription needs to be judged by an experienced doctor. 3. Astigmatism refraction When applying, cover one eye, so that the eye to be examined looks at the astigmatism table in front of it, such as the black line on the astigmatism table is the same, indicating no astigmatism or only very little astigmatism (about 0.25D-0.5D); Inconsistencies in shade suggest astigmatism. If the astigmatism of children is higher than 75 degrees, it needs to be corrected with glasses, the presence of astigmatism will make the human eye produce a blurred image at any distance, and in childhood, clarity is the basis of visual development, so any problems that may produce blurred images need to be corrected. 4. Interpupillary distance measurement The measurement of interpupillary distance is to measure the distance between the pupils of the eye, and this parameter needs to be considered when wearing glasses. That is, the distance between the centers of the two lenses (optical center distance) should match the interpupillary distance of the patient, otherwise, even if the prescription is correct, the patient will feel uncomfortable after wearing glasses and affect vision. 5. The choice of lenses When choosing lenses, children should first consider resin hardened spectacle lenses, which are fragile and easy to cause damage to children's eyes. Plastic lenses mainly require accurate astigmatism axis, the luminosity must be accurate, there can be no scratches on the lens, no bubbles and impurities, the prescription of children's spectacle lenses must meet the quality inspection standards promulgated by the state, and the error of diopter should be within the requirements of the national standards.