Myopic glasses do not match so fast
[Spectacle rack supply] Professor Huang Zhongwei, director of ophthalmology at the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, said that summer is the best time to check myopia and improve vision. Parents should first pay attention to a problem: Don't be too busy with finding glasses when you find myopia.
Huang Zhongwei said that many parents' plans facilitate the optometry of computers in optical shops. It should be noted that computer optometry in an optical shop does not directly check the diopter of the eyeball. He reminded that "vision" and "degree" are not the same concept. In simple terms, "vision" refers to the clarity of the eye's viewing of things. The normal human eye has a visual acuity of 1.0. Visual acuity is not only related to the refractive power of the eyeball, but also related to inflammation, fatigue, and mental status at the time of examination. For example, when you are tired, your vision may be slightly poor, and when you are in good spirits, your vision may be better. The so-called "degree" of the optical shop is based on the vision of the computer optometry, and is assigned to the corresponding "degree" glasses. The regular hospital to check the vision is to use the method of dilated pupil refraction, directly check the refractive power of the eyeball, to obtain "degree", this optometry method is more scientific and can correctly reflect the child's myopia.
"The visual acuity is reduced, there may be false myopia or inflammation." Huang Zhongwei said that the eye has a certain ability to adjust. However, long-term use of the eye can easily lead to ciliary muscle spasm, the eye can not relax and cause vision loss. This situation is called "pseudo-myopia". At this time, the vision obtained by computer optometry may be only 0.6 or 0.7. However, myopic refraction may not be myopic.
Reading a book all day long, facing a computer phone for a long time, tired eyes, etc., may cause false myopia. Pseudomyopia can restore normal vision through adequate rest and treatment. In addition, external eye disease may also cause myopia "false." Common external eye diseases are trachoma, conjunctivitis, keratitis, sties, etc. These diseases are related to eye health and bacterial infections. Inflammation stimulates the eyeball, seeing things easily fatigue, aggravating the ciliary muscle spasm, causing pseudo myopia. Conjunctivitis, hordeolum, etc. will grow in the eyelid. The tumor oppresses the eyeball, which changes the refractive power of the eyeball and causes vision loss. It also restores eyesight after treating inflammation and providing adequate rest to the eye.
For more information, please pay attention to the China glasses rack trading network: ã€/】, welcome to use free trial membership, contact information, glasses rack group
Conductive Caster Medium Duty
Conductive Caster Medium duty
Ningbo Mywin Caster Co., Ltd. , https://www.mywin-caster.com