[The True-Vista bifocal intraocular lens. Current results of the European multicenter study].
In a prospective multicenter study we evaluated vision with the True Vista bifocal IOL. At 12-14 months after operation. 391 patients ("best cases") were available for follow-up. Without (with) correction, 14.4% (37.9%) had a distance acuity of 20/20 or better, 28% (69.6%) had 20/25 or better, 70% (96.9%) had 20/40 or better, and 30% (3.1%) had a distance acuity of less than 20/40. Near acuity without (with) correction was 20/20 or better in 18.7% (57.5%), 20/25 or better in 42.9% (80.8%), 20/40 or better in 84% (97.5%), and less than 20/40 in 16% (2.5%). Our results demonstrate that corrected distance and near acuity with the True Vista bifocal IOL is good. However, due to surgically induced astigmatism and inaccuracies of IOL power calculation, uncorrected acuities are still disappointing. Thus, when implanting bifocal IOLs, careful patient selection, control of astigmatism and IOL power calculation seems crucial.
Knorz
M C
MC
Universitäts-Augenklinik, Klinikum Mannheim der Universität, Heideberg.
Seiberth
V
V
D000065:Accommodation, Ocular / Q000502:physiology; D001251:Astigmatism / Q000209:etiology; D005060:Europe; D006801:Humans; D007910:Lenses, Intraocular; D055095:Optics and Photonics; D011183:Postoperative Complications / Q000209:etiology*; D011446:Prospective Studies; D011474:Prosthesis Design; D014787:Vision Tests; D014792:Visual Acuity