Phacoemulsification with intraocular lens implantation after excimer photorefractive keratectomy for myopia

Objective To study the surgical skills and clinical results of phacoemulsification with intraocular lens implantation after excimer photorefractive keratectomy for myopia,and to find a method to predict intraocular lens(IOL) power in these cases.Methods The patients with complicated cataract after excimer photorefractive keratectomy were operated with phacoemulsification and intraocular lens implantation.The keratometric value(K value) was measured by corneal topography and keratometry preoperatively,and the K value measured by corneal topography were used to calculated the IOL power. After the operation the K value was measured by the corneal topography again and all the patients took a optometry.And then compare the results preoperatively and postoperatively to assess the accuracy of lOL power.Results The corrected vision after operation was improved.The K value measured by Orbscan Ⅱ corneal topography was not significantly changed after operation.If used these K value to predict IOL power the eye sight will be insufficiently correct.The mean refractive error was +1.57D postoperatively,which had +3.44D error with the predictability IOL power refractive error preoperatively .Conclusions Phacoemulsification with intraocular lens implantation can cure the cataract after excimer photorefractive keratectomy effectiveky.It is safe to keep-3D to-5D refractive error of IOL power preoperatively if the K value measured by Orbscan II corneal topography was used to calculated the IOL power.