CAN I HAVE CATARACT SURGERY AFTER PREVIOUS REFRACTIVE SURGERY (PRK, LASIK, OR RK)?
Refractive surgery (PRK, LASIK, or RK) is done on the cornea.
Cataract surgery removes the lens that has become cloudy.
Cataract surgery technique is the same in patients who have had Refractive surgery (PRK, LASIK, or RK) and patients who not had Refractive surgery (PRK, LASIK, or RK).
However, the shape of the cornea has been changed in eyes that have had Refractive surgery (PRK, LASIK, or RK). This makes measuring the corneal power after Refractive surgery(PRK, LASIK, or RK) challenging. This makes calculating the power of the intraocular lens more complex compared to eyes that did not have refractive surgery.
The standard IOL formulas can’t predict the correct IOL power due to the changes in the cornea. We use the formulas for astigmatism and previous refractive surgery (RK, PRK, & LASIK) surgery from the Lenstar 9000. The Avanti’s Total Corneal Power which measure the corneal refractive power, and Nidek OPD3 corneal power after refractive surgery. The different results are entered into a formula to get the best IOL power.
The intraocular lens is usually in 0.50 steps and the formulas we use have limitations.
Some patients may have suboptimal vision without glasses may require a PRK touch up to achieve the best possible vision without glasses. THIS IS MORE FREQUENT IN EYES THAT HAD Refractive surgery (PRK, LASIK, or PRK)
Cataract development is a major cause of the decrease in vision may years after Refractive surgery.