Incoherently coupled dark-dark , bright-bright and bright-dark screening soliton pairs in centrosymmetric photorefractive crystals are possible due photorefractiveeffect.
预言了亮-亮，暗-暗和亮-暗非相干耦合空间孤子对可存在于中心对称光折变介质中。
2
Objective To investigate the effect of amniotic membrane transplantation on initial corneal wound healing after photorefractive keratectomy(PRK).