Nearsightedness after dilating the pupils means that it is caused by true myopia.
Myopia can be categorized into two different types: true myopia and pseudomyopia. The main way to distinguish between true myopia and pseudomyopia is by dilating the pupils.
After the pupil is dilated, the spasmodic ciliary muscle inside the eyeball can be relaxed, and at this time, if there is still myopia, it means that the myopia is true myopia.
If the myopia disappears after dilating the pupils, it means that it is caused by pseudomyopia, because the formation of hypothetical myopia is triggered by the spasm of the ciliary muscle, and the elimination of ciliary muscle spasm through dilating the pupils can make pseudomyopia disappear.
Myopia patients should go to the ophthalmology department of the hospital for examination in time, and the doctor will determine the exact degree of myopia through optometry examination, and then issue prescription for prescription of glasses, and instruct the patients to wear glasses and other ways to correct myopia.