Overdraft of Eyesight

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Why Save the Usage of Eyes

Summer is the season of the highest temperature in a year, so the metabolism in human body is very active. Generally speaking, many people are so easy to be influenced by the high temperature in summer that their physiological functions and appetite tend to change. So in this hot summer day, how to adjust our body to the best state? Below we prepare for you some knowledge on keeping healthy. Wish you have a good summer day.

Eyesight is a kind of limited resource.

Save water! Save electricity! Save time! From childhood to present, we have listened to countless edification like that. Due to the limit of the resource above, we need to save them. If we devour these limited resources, there must be the day of exhaustion. In fact, eyesight is also a kind of limited resource, so we need to protect it and save the usage of eyes.

Although the cause of myopia is not very clear yet, it is proved by lots of social surveys and experiments on animals that there are obvious causality between the occurrence of myopia and overdraft of eyes in watching near objects during the adolescence when eyes are still growing. Take the adolescent myopia sufferers who have the average extra reading time of less than two hours as reference, the number of adolescents who tend to read three hours after class are 2.1 times of the former ones. As for the adolescents who read for four to five hours after class, the number comes up to 3.2 times.

From the statistics shown in the above example, we could know that the overuse of eyes in watching near objects is the main reason for adolescents to get myopia. Early in 1980, a foreign scholar called Wallman did an experiment with chicklings. Through the experiment, he found that the chicklings which spent long time in watching near objects would get myopia of strong strength, while the chicklings which not only observed near objects but also watched objects beyond or spent long time in watching objects beyond didn’t have any problem in their eyes. Since, there are some other experiments also proving that overuse of eyes in watching near objects is the main cause of getting myopia.

All of these facts tell us that, during the adolescence, the time of watching near objects is a limited resource. If we consumer it excessively, some diseases would come into our eyes. Therefore, it is necessary for us to save the usage of eyes.

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Tags: adolescence, myopia, Overdraft of Eyesight, plastic glasses, Save the Usage of Eyes
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