The child said that his eyesight was clear when he wore OK glasses in the morning, and he felt nearsighted again in the afternoon. Is it normal?

It's really worrying to hear children say that they have clear vision in the morning and feel nearsighted in the afternoon. After all, myopia has a certain influence on study and daily life. But before judging whether this is normal or not, we need to know some basic knowledge about OK mirror.

OK mirror, which is Ortho-K, is a kind of contact lens to correct vision. It is similar to the familiar RGP contact lens, but OK lens is mainly used for wearing at night, which can provide clear vision during the day. The principle is to reshape the cornea at night to improve the vision during the day.

Then, why do children have clear vision in the morning and feel nearsighted in the afternoon? This may be related to many factors:

Corneal transplantation: Although OK mirror can reshape cornea at night, this effect is not permanent. After a whole day's activities and study, the cornea may gradually return to its original state, resulting in decreased vision in the afternoon.

Visual fatigue: watching homework for a long time, using computers or mobile phones and other close work will make your eyes tired and affect your vision.

Cleanliness of lens: If the cleanliness of OK lens is not enough, it may cause eye discomfort or blurred vision.

Improper parameters: If the parameters of OK mirror do not match the parameters of children's cornea, it may also lead to poor vision.

Other eye problems: eye diseases such as dry eye and conjunctivitis may also affect vision.

Therefore, the child said that it is not necessarily normal to feel myopia in the afternoon. In order to better understand your child's condition, it is recommended that you take your child to an ophthalmologist for professional examination and consultation. The doctor will give corresponding suggestions and solutions according to the specific situation.

In addition, some measures can be taken to protect children's eyes at ordinary times:

Control eye time: take a proper rest, look at the distance every once in a while and do eye exercises.

Maintain correct eye posture, such as adjusting screen height and angle, leaving the seat properly, etc.

Balanced diet: eat more foods rich in vitamins A and C, such as carrots, spinach and eggs.

Regular check-up: Check your eyes at least once a year to know the health of your eyes.

It is very important for children's eyes to be healthy. If you find that your vision is abnormal or uncomfortable, you must seek medical advice in time. I hope my suggestion can help you!