With this traditional approach, post-cataract surgery near vision is corrected using eyeglasses.You might find it surprising that after undergoing vision correction surgery, you still require eyeglasses for near vision reading.Trifocal IOLs are popular presbyopia-correcting IOLs in many areas outside of the United States.Compared to the bifocal diffractive IOL, the trifocal IOL improves intermediate vision by providing a third focus.
The Tecnis diffractive IOL is an acrylic lens with an aspheric anterior surface and a posterior surface with diffractive rings that focus both near and distance light regardless of pupil size.
Another prospective study using the Re STOR IOL after bilateral refractive lens exchange, found that all patients reported satisfaction with their visual outcomes, but rated intermediate vision lowest.
A study comparing the Tecnis diffractive IOL to the Re Zoom refractive IOL found higher levels of patient satisfaction and less visual disturbances in the Tecnis group, but less reported problems with intermediate vision in the Re Zoom group, despite no differences in near or distance uncorrected vision between the two groups.
These surgical complications include, but are not limited to infection, increased IOP, corneal edema, posterior capsular opacification (PCO), IOL decentration, and retinal detachment.
The other major side effect experienced by patients after IOL implantation are visual disturbances.
Search for accommodating power:
Despite the high level of patient satisfaction with IOLs, studies have demonstrated that patients are no more satisfied with IOLs than with other correction strategies.