Interaction between Corneal and Internal Ocular Aberrations Induced by Orthokeratology and Its Influential Factors.

The increase in OK-induced HOAs is mainly attributed to Z31 and Z40 of cornea. Z3-1 in the internal component showed a compensative effect on the corneal vertical coma. The degree of myopic correction and increase in CCR may be the essential influential factors of the increase in Z31 and Z40. The appropriate size of the OK lens may be helpful to decrease OK-induced vertical coma.