Surgical Correction of Ametropia with AddOn™ Intraocular Lens in Post-Penetrating Keratoplasty Pseudophakia

Abstract

Cataract surgery is the most common surgery in ophthalmology. The aim of cataract surgery is to restore vision in eyes in which the natural lens became opacified mostly due to the aging of the lens, or the presence of other ocular diseases, which promote earlier cataract formation. During cataract surgery, artificial intraocular lens (IOL) is implanted into the lens capsule and the value of the IOL is planned before surgery based on the preoperative IOL calculation. However, in the significant number of patients, cataract surgery may end up with a postoperative refractive error in which case patients have to wear glasses to reach the full vision for both distance and near correction (if monofocal IOL is used during cataract surgery!). Modern cataract surgery becomes more and more a refractive procedure as well, especially when multifocal and/or toric IOLs are implanted. However, in some specific cases where such IOLs are not applicable, high postoperative refractive error after cataract surgery can significantly influence the quality of the obtained vision. One such example is cataract surgery after penetrating keratoplasty. In this chapter, results of a novel approach of post-PK ametropia correction, namely implantation of sulcus placed AddOn IOLs (also called a piggyback lens) will be presented.

Comparison of a Presbyopia-Correcting Supplementary Intraocular Lens Combination and a Capsular-Bag Lens: An In Vitro Study

“…Supplementary sulcus-fixated IOLs are used in various indications. The monofocal and monofocal-toric versions of the 1stQ AddOn have been successfully used to correct residual refractive errors in pseudophakic patients including patients with a history of penetrating keratoplasty [ 28 , 29 , 31 , 32 ]. The trifocal version of this IOL can be an option for pseudophakic patients who wish to be more independent from spectacles as it provides in vivo results similar to a capsular-bag fixated multifocal IOL [ 8 , 12 , 13 ].…”