I can only tell you so much about myopia~

Abstract: mydriasis does no harm to the eyes. Only in a small part of the population (mostly the elderly) due to abnormal eye anatomical characteristics, mydriasis leads to high intraocular pressure and induces the onset of angle closure glaucoma, but it is very rare in children.

for many children with poor eyesight who come to the hospital for examination for the first time, ophthalmologists will recommend mydriasis optometry. Then the question comes:

why mydriasis?

mydriasis is not safe? Is


faster than slower?

will my child be pseudomyopia?

does myopia need glasses?

can eye protection reduce myopia

there are definitely not a few parents who have these questions. Let’s listen to the authoritative answers of ophthalmologists!

question 1: why mydriasis? First of all, we should clarify the role of mydriasis. Because the ciliary muscle of children’s eyes has a strong regulatory ability, not mydriasis will paralyze the ciliary muscle, and the true diopter may be covered up. Therefore, mydriasis can not only diagnose the types of ametropia (i.e. myopia, hyperopia and astigmatism), but also obtain accurate diopter.

question 2: is mydriasis safe? Mydriasis does no harm to the eyes. Only a small number of people (mostly the elderly) have high intraocular pressure due to mydriasis due to abnormal anatomical characteristics of the eyes, The onset of angle closure glaucoma is induced, but it is very rare in children.

question 3: just disperse quickly? Slow dispersion is not good? The full name of rapid mydriasis is “rapid mydriasis”, which is mainly suitable for older children and adult optometrists. The method is to close your eyes and sit still. The doctor drops the rapid mydriasis solution every 20 minutes. After dropping it twice in a row, you can rest for 40 minutes to do the initial optometry. It will return to normal 6-8 hours after mydriasis, and then go for a retest the next day. Slow astigmatism is called “slow mydriasis”, which is suitable for young children, especially those with hyperopia, astigmatism, strabismus and amblyopia. Atropine eye ointment is generally used. After the doctor prescribes the medicine, the parents point the medicine to the children at home twice a day for three consecutive days. On the fourth day, they come to the hospital for the initial optometry, which is calculated from the date of the initial optometry examination, and then come back to the hospital for re optometry on the 21st day. Slow mydriasis can fully paralyze the muscles that control the contraction of the pupil, and the results of optometry will be more accurate. It takes two to three weeks to return to normal after mydriasis. These two ways of mydriasis are not good or bad. It depends on the child’s age and the actual situation of the eyes!

question 4: is it true myopia or false myopia? True myopia is an organic change and cannot recover naturally. If the child’s poor eyesight lasts for half a semester or several months, it is likely to be true myopia. Pseudomyopia is functional, mostly in adolescents. Vision can decline in a few weeks or 1 ~ 2 months, and can recover to some extent after appropriate rest. Many parents have illusions that their children are just pseudomyopia. In fact, to judge whether a child is pseudomyopia or true myopia, you can know by doing one thing! That is – regular mydriatic optometry! There is no myopia after mydriatic optometry, and the diopter is pseudomyopia; Myopia diopter is true myopia.

question 5: does myopia need glasses? Once suffering from true myopia, we must wear appropriate glasses for correction. At present, the methods suitable for correcting myopia include frame glasses and contact lenses. For children, wearing frame glasses is the main way to correct myopia. Contact lenses are divided into soft and hard. What we contact most is soft, which needs to be worn during the day. Hard glasses are divided into two categories: one needs to be worn during the day to correct vision, and the other needs to be worn at night; Hard or soft contact lenses worn during the day mainly play the role of correcting vision similar to frame glasses; The glasses worn at night are called corneal shaping glasses, commonly known as OK glasses. They are generally used in children and adolescents in the growth and development period. They play a special “shaping” role in wearing glasses at night, and can appropriately delay the progress of juvenile myopia. Parents should be reminded that the fitting of any type of glasses requires professional technology. It is recommended to carry out it under the guidance of ophthalmologists and optometrists.

question 6: can eye care reduce myopia? With the growth and development of children, myopia diopter will only increase, not decrease. Teenagers are generally axial myopia. As the eye axis becomes longer, the degree of myopia gradually increases. Generally, for every 1 mm increase in the length of the eye axis, the degree of myopia will increase by 300 degrees. In adulthood, the degree of myopia can be stabilized within a certain range because the axial length of the eye is no longer increased. Any method can not make the lengthened eye axis shorter, so eye protection will not reduce the degree of myopia.

warm tips

1. Some children will have symptoms such as red face, fever, eye discomfort and rapid heartbeat after using atropine. Generally, they can subside by themselves without worrying too much. If you feel unwell for a long time or have fever above 38 ℃, please stop taking the medicine and see a doctor.

2. Children will have photophobia and other symptoms during mydriasis. They can wear sunglasses to protect them when going out.

3. Once diagnosed as true myopia, it should be corrected. Wearing glasses that meet the diopter can not only correct vision, alleviate eye fatigue, but also prevent the excessive growth of diopter.

4. For small patients with ordinary myopia, optometry is generally required every six months to one year, and mydriasis optometry is required every time in order to obtain the true diopter.