Influences oftear-film interrupting on corneal surface aberration and ocular aberration

Objective To observe the influences of tear film interrupting on corneal surface aberration and ocular aberration.Methods Sixty eyes of thirty patients in myopia were selected by randomly.Tear film interrupt-ing was performed by 0.5% tetracaine hydrochloride in dilated pupil.corneal surface height were acquired to cal-culated corneal surface aberration by ORBSCANIIz system and ocular aberration were examined by Zywave sys-tem.Rusults(1)corneal anterior surface aberration increased(P=0.023);(2) Of ocular aberration,defocus increased(P=0.020),spherical aberration increased(P=0.000),foil-like aberration increased(P=0.000),astigmatism increased(P=0.361) and coma reduce(P=0.267).Conclusion Tear film interrupting destroyed stability and uniform of tear film,leads to corneal surface aberration and ocular aberrations up and to quality of vision down.