If ciliary muscle contraction can elicit protrusion at posterior sclera, it is conceivable that some changes in corneal shape would also occur as the cornea is adjacent to ciliary muscle. The influence of accommodation on the cornea has therefore been the subject of several studies with conflicting results. Some authors reported no change4, 5, while others described significant change in corneal curvature during accommodation6-9. Yasuda and Yamaguchi9 found central corneal steepening of approximately 0.10 D, using pharmacologically induced ciliary muscle contraction and corneal topography analysis. Saitoh et al10 reported that instillation of a sympathomimetic agent to stimulate mydriasis induces significant flattening of both anterior and posterior cornea curvatures as detected by Orbscan . On the contrary, Buehren5 and Read4 argue that changes in corneal topography is a result of excyclotorsional eye movement during accommodation. When this excyclotorsional eye movement was accounted for in their data analysis, no significant change in corneal topography was found with accommodation. The effect of ciliary relaxation on the cornea curvature, however, was less well delineated.