title: [Fundus asymmetry--supertraction of the papilla and posterior sclera staphyloma--as a source of error in the calculation of intraocular lenses].
abstract: The evaluation of 404 consecutively implanted posterior-chamber intraocular lenses after extra-capsular cataract extraction revealed a mean post-operative refractive error of + 0.52 diopters with a standard deviation of +/- 1.27 diopters. Four calculations attracted attention because of their unusually high refractive error of + 3.4 diopters. A post-operative refractive balance excluded measurement or calculation errors. On the other hand, repeated axial length measurements on these four eyes showed a very high mean variation of 3.27 mm. This high variation can be correlated to such typical elevation changes of the central fundus as a tilted disc or posterior staphyloma. High axial length measurements which do not correspond to appropriate amounts of axial myopia should be handled carefully to avoid high amounts of hyperopia following intraocular implantation.
mesh_terms: D005654:Fundus Oculi; D006801:Humans; D007249:Inflammation; D007910:Lenses, Intraocular; D009898:Optic Disk; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000209:etiology*; D012590:Sclera
vernacular_title: Die Fundus-Asymmetrie--Supertraktion der Papille und hinteres Sklerastaphylom--als Fehlerquelle bei der Berechnung intraokularer Linsen.