Differences in ocular biometry between urban and rural children matched by refractive error: the Shandong Children Eye Study.
Jos J RozemaWei SunJian Feng WuWen Jun JiangHui WuTai Liang LuYuan Yuan HuRong ChenDa Dong GuoXing Rong WangSebastian DankertJost B JonasRafael IribarrenQing Mei TianHong Sheng BiPublished in: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) (2020)
For the same, matched refractive error, children from urban regions had significantly longer eyes and flatter corneal curvature than rural children. Since corneal curvature is defined during the first 2 years of life, early environmental factors may be the source of these differences in ocular dimensions.