Abstract:AIM:To analyze keratometric readings obtained from Orbscan topography system and IOLMaster in myopia patients.METHODS:The corneal curvature were measured with Orbscan topography system and IOLMaster respectively in 68 cases(135 eyes) subjects aged 18-41 years old.There were 46 male(91 eyes) and 22 female(44 eyes)subjects.The results were compared.RESULTS:The average corneal curvature measured by Orbscan topography system and IOLMaster were 43.4637±1.4188 and 43.6952±1.3676D.The measurement obtained from Orbscan topography system was lower than that from IOLMaster,There is no statistical difference between the two methods.CONCLUSION:Corneal curvature abtained from IOLMaster showed no significant difference than that from Orbscan system.It is a clinically useful tool in eveluating corneal surface curvature.