CPT® Code 66985

The CPT® Code 66985 refers to the procedure of inserting a secondary intraocular lens (IOL) prosthesis, which is performed without concurrent cataract removal. This procedure is typically indicated for patients who have previously undergone cataract surgery and require additional correction of refractive errors. The insertion of a secondary IOL can be described as a "piggyback" approach, where the new lens is placed over an existing IOL to enhance visual acuity. The procedure involves making an incision in the cornea, followed by the injection of viscoelastic material into the anterior chamber to safeguard the corneal endothelium during the operation. The ciliary sulcus, which is the space between the iris and the lens, is then filled with viscoelastic material to facilitate the placement of the new IOL. The IOL is typically delivered using an injector, and its haptics (the supporting structures of the lens) can be positioned either directly in the ciliary sulcus or tucked behind the iris. After the lens is securely placed, the viscoelastic material is carefully removed, and the corneal incision is closed, either with sutures or through a technique known as stromal hydration. This procedure is crucial for patients seeking improved vision after prior cataract surgery, particularly when the initial IOL does not adequately address their refractive needs.