Systems and methods for improving vision of a subject implanted with an intraocular lens (IOL). In some embodiments, a method includes applying a plurality of laser pulses to the IOL. The laser pulses can be configured to produce, by refractive index writing on the IOL, a predetermined change in phase profile of the IOL to increase spectacle independence.
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 62/830,218, filed Apr. 5, 2019, which is incorporated herein by reference in its entirety.
BACKGROUND
Currently a range of factors can limit visual performance of a patient (also referred to herein as a “subject”) following corrective surgery (e.g., cataract surgery) in which an intraocular lens (IOL) is implanted in the patient’s eye(s). These limiting factors can include: incorrect IOL power, which is commonly caused by incorrect IOL power calculations due to biometry accuracy; and uncorrected astigmatism, which can be caused by factors such as surgically induced astigmatism, effect of posterior corneal astigmatism, incorrect toric IOL power calculation, toric IOL rotation, or misplacement and use of non-toric IOLs in toric corneas. Additional limiting factors can include: spectacle dependence, which can be due to monofocal IOL implantation, as well as incorrect estimations of the most suitable presbyopia correcting IOLs for the patient; photic phenomena, such as halos, starburst and glare, for example in patients using presbyopia-correcting IOLs; negative dysphotopsia; peripheral aberration, and chromatic aberration. Replacing an implanted IOL that causes negative post-surgical visual outcomes for a patient can be a risky and complicated procedure. Therefore, among other needs, there exists a need to alleviate negative post-surgical visual outcomes without the need of IOL replacement.