Most intraocular lens (IOL) implants are intended to remain in place for life and do not routinely need replacement. The material is stable and does not wear out.
When Replacement Is Considered
Rarely, IOL exchange is performed for significant residual refractive error, lens decentration, opacification of the IOL material, or intolerance to visual side effects from multifocal designs. Trauma or complications during the original surgery may also necessitate change.
- More common after very early lens implantation or complex eyes
- Exchange surgery is technically more challenging than primary cataract surgery
- Risks include capsule damage, retinal detachment, and infection
- Often other solutions, such as glasses, contacts, or corneal laser, are preferred
Monitoring Over Time
Patients with IOLs should have periodic eye examinations to assess the capsule, retina, and pressure. Clouding of the capsule (posterior capsular opacification) is treated with YAG laser, not lens replacement.
- Any sudden visual change after IOL surgery should be reviewed promptly
- Careful pre-operative planning minimises the need for later exchange
- Discuss long-term expectations and options with the surgeon before surgery
- Overall, true IOL replacement is uncommon in modern practice
