The extended-wear contact lens vs the intraocular lens: a comparison of risks.

Although both the extended-wear contact lens and the intraocular lens are under intense clinical investigation, years will be required to collect sufficient data for valid comparisons of their risk factors. Meanwhile, a rational appraisal of risks associated with both therapeutic alternatives should be considered, with decisions based on risks or benefits for each patient. The factors to be considered in comparing these alternatives for the correction of aphakia are discussed.