Chapters authored
Surgical Correction of Myopia
Myopia is the most prevalent refractive error in the world and its incidence is increasing. Together with conservative methods of treatment, various surgical methods have been proposed. Corneal refractive surgery is probably the most accepted one. Laser in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), and small incision lenticule extraction (SMILE) are suitable for treatment of myopia up to −8.00 D in the younger age group. For patients not suitable for corneal refractive surgery, lens-based procedures are available. Phakic intraocular lenses are suitable for patients younger than 45 years of age with high myopia or some other contraindications for corneal refractive surgery. For older patients, refractive lens exchange (RLE) with implantation of multifocal or monofocal intraocular lenses is gaining popularity.
Part of the book: Intraocular Lens
Surgical Correction of Ametropia with AddOn™ Intraocular Lens in Post-Penetrating Keratoplasty Pseudophakia
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.
Part of the book: Refractive Surgery