Presbyopia, or presbyopia, is a condition in which the near vision does not last, and the lack of adjustment means that the near point gradually becomes farther and farther away, and with effort you can still see near objects clearly. So how to check it? For any presbyopic person, the first step of optometry is to make the detection of distance refractive error, that is, to carry out the standardized optometry procedure accurate refractive error of the basis of optometry and correction, is the beginning of the success of presbyopic optometry, therefore, the optometrist must establish this concept, and first skilled in the standardized optometry procedure. Accurate optometry and complete correction of myopia, hyperopia and astigmatism. The measurement of myopia should be done at a standard working distance in a fully corrected refractive condition, with both eyes in simultaneous vision. The test is performed with the selection of a suitable visual standard (reading object) and a suitable lighting system, and the prescription is finalized with reasonable adjustments according to individual needs.