After cataract surgery or intraocular lens implantation, most patients experience significantly improved vision. However, in some cases, the intraocular lenses may displace or deteriorate over time, or there may be a residual refractive error that was not fully corrected in the initial surgery. In these situations, intraocular lens replacement or a secondary implant may be options to restore vision and correct persistent refractive issues.

Intraocular Lens Replacement (ILR) is a surgical procedure that involves removing the previously implanted intraocular lens and replacing it with a new one. This may be necessary if the original lens has shifted, deteriorated, or is causing vision problems. The ILR procedure is similar to the original cataract surgery and is performed under local anesthesia.

A secondary implant is an additional intraocular lens placed in the eye after cataract surgery or intraocular lens implantation. This may be done if there is a residual refractive error that was not fully corrected in the initial surgery. The secondary implant is placed behind the existing intraocular lens and can help correct issues such as astigmatism, myopia, or hyperopia.

How are these procedures performed?

Both ILR and secondary implants are outpatient surgical procedures performed in an operating room. The ophthalmic surgeon uses specialized instruments to make a small incision in the eye and access the intraocular lens. Then, the old lens is removed (in the case of ILR) or the new lens is inserted (in the case of a secondary implant). The incision is closed with fine sutures, and suture removal is usually not necessary.

What are the risks and complications of these surgeries?

As with any surgical procedure, ILR and secondary implants carry some potential risks and complications, such as:

  • Infection: The risk of infection is low but can be serious.
  • Inflammation: Ocular inflammation is a common side effect that can be treated with medication.
  • Retinal Detachment: In very rare cases, the procedure may cause retinal detachment.
  • Vision Loss: In extremely rare cases, the procedure may lead to vision loss.