Abstract
Myopia is gaining public health importance because it is a major cause of correctable blindness and visual impairment globally [1]. In some populations the complications of myopia are now the major cause of uncorrectable blindness [2, 3]. Historically, the mild phenotype of low myopia has been separated from the potentially blinding associations of pathological myopia with an arbitrary refractive error of −6.0D [4]. However it is becoming clear that there is no threshold effect and that common myopia of all levels contributes to risks of uncorrectable visual loss such as cataract, glaucoma, retinal detachment, and maculopathy [5, 6].