Children who watch a smartphone for more than one hour a day need to be careful.

* This article is a re -edited part of the Ninth Canidil Public Relations magazine, a hospital at Tottori University School of Medicine.

若者に急増する内斜視「ものを見るときに片目をつむる人は注意」

According to the results of a school health statistics published by the Ministry of Education, Culture, Sports, Science and Technology in July this year, the number of elementary school students with less than 1.0, 37.52 % of elementary school students and 58.29 % of junior high school students was updated.

The child's eyesight is definitely decreasing.

"I feel that the number of children with acute strabismus has increased in the past five years," says Senjusuke Karashita, who is in charge of weak vision, strabismus, and pediatrics at an ophthalmologist at Tottori University School of Medicine.

Inside strabismus refers to the state in which the left and right gaze does not fit, and one of the left and right eyes enter the inside.When the eyes suddenly enter the inside, the one that looks like one looks like two.

In recent years, the number of inner strabismus has increased in young people from children to about 30 years old.

"There are several causes of inner strabismus, those that are born (congenital), those caused by hyperopia (coordinator), and those that occur after growing up due to brain diseases and myopia.In recent years, the number of inner strabismus has increased in the younger generation. "

The increase in acute strabismus, the external factors are still unknown.However, it is considered that excessive use of smartphones, tablet terminals, and portable game consoles may have been affected.

Children are also sensitive to eyesight.At this time, looking at a smartphone for a long time also affects development, and may develop eye diseases such as acute internal strabismus and myopia.

In the early stages of the inner strabismus, the person himself is "a little hard to see" and has little inconvenience, and the surrounding adults may not notice strabismus.

"There are times when the gaze is a little different from usual, and it is a precautionary signal of the inner strabismus, such as clinging one eye to wink when looking at things. If you notice, consult an ophthalmology."

Treatment of acute inverted strabismus is adjusted with a strabismus glasses that match the angle of the strabismus if it is relatively light.As the symptoms progress, the surgery becomes.By changing the position of the muscles (external eye muscles) that moves the eyes, adjusting the balance of the eyeballs and correcting the eye position.

The number of muscles is limited and cannot be performed repeatedly repeatedly.And even if you have surgery, you will have the risk of recurrence unless you review your lifestyle.

"The time of use of smartphones and tablets (terminals) is one hour a day for elementary school students and within 2 hours for junior high school students. The children in the nursery school have a smartphone for 2 or 3 hours.It is absolutely good. The distance to the smartphone or tablet is 30 cm or more, and if you use it for 30 minutes, take a break for more than 5 minutes. "

Nevertheless, if you suddenly limit the time of your smartphone, your child will rebound.It's a big problem for parents who do work and housework while their children are watching their smartphones.

"You can show your smartphone on a large screen such as TV. Watch more than one meter on a large screen. That alone is completely different. However, you need time limit. Watch on the TV screen first. After that, gradually have time.I will reduce it "

Karakita says that it is important for adults to teach appropriate usage time and method.

"It's impossible to let go of a smartphone in a modern society. It's important to get along well."