The effect of temporary myopia on the development of myopia

  Myopia is a refractive error in which the refractive power of the human eye is too large relative to the length of the eye axis, i.e., a refractive state in which external parallel light enters the eye and is focused on the retinal photoreceptor layer before it is adjusted at rest. Myopia is one of the most common visual disorders in humans, and its development is influenced by both environmental and genetic factors. One of the several existing myopia hypotheses suggests that excessive near work causes the eye axis to grow. Since this theory is based on near work, the question of whether regulation and accommodation play an important role in the development of myopia has been the focus of research. When near-work is sustained for a period of time, the far point temporarily shifts closer, a phenomenon known as near-work-inducedtransient myopia (NITM). In other words, NITM is defined as a myopia-like change in the far point induced by sustained near-work. It is currently believed that the retinal defocus phenomenon induced by NITM and its subsequent attenuation changes may stimulate a compensatory vitreous cavity growth that leads to myopia formation. Although the etiology of NITM is still unknown, NITM has attracted significant interest from researchers because of its close association with myopia.