One way for permanent correction of vision errors such as myopia is using surgically implanted lenses which are also called Phakic IOLs (intraocular lenses). These lenses can be placed between the iris and cornea. According to currently available statistics, these lenses could cause difficulties for the patients. The reasons for the discomfort and potential damages to the eye, however, are not fully understood. In this paper, the effect of intraocular lenses on the hydrodynamics of the eye anterior chamber was studied using the computational fluid dynamics (CFD) technique. The computational model was developed based on the eye geometry of a volunteer patient. The lens was selected to be compatible with mean anterior chamber depth of typical patients. The model provided estimation of aqueous humor flow streams in the anterior chamber of the eye under the effect of natural convection. The flow fields in the anterior chamber, as well as, the shear stress acting on the cornea for the cases before and after the surgery were obtained and compared.

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