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Actually, I think that the reason that intense schooling causes myopia or nearsightedness is because students hyper focus while reading books. In fact, many students do not know how to read correctly. They hyper focus to glean information from text rather than absorbing information as one is more likely to do when one reads for pleasure. Because of this intense focusing for extended periods of time (without relaxing eyes through changing focus intermittently), stress is created in the eyes. Stress causes free radicals to form. It is my opinion, that myopia is caused by the build-up of free radicals in the eyes. If you wanted to correct the problem, you would detoxify the eyes. This can be done in a number of ways.