%0 Journal Article
%T Performance visual ap¨®s implante de LIO t¨®rica em pacientes com astigmatismo corneano
%A Correia
%A Renato Jos¨¦ Bett
%A Moreira
%A Hamilton
%A Netto
%A S¨®lon Uchoa Lago
%A PantaleŁżo
%A Gleisson Rezende
%J Arquivos Brasileiros de Oftalmologia
%D 2009
%I Conselho Brasileiro de Oftalmologia
%R 10.1590/S0004-27492009000500007
%X purpose: to analyze visual acuity without correction and rotational stability outcomes following toric iol implantation. methods: prospective study of 20 eyes of 13 patients that underwent phacoemulsification surgery indicated for cataract associated with regular keratomeric astigmatism, symmetrical, ranging from 1 to 4 diopters. best corrected visual acuity, refraction, keratometry and computed topography were performed preoperatively. the calculation of cylindrical lens power and its placement were determined by the manufacturer. all lenses were implanted in the capsular bag by the same surgeon. the patients were examined by a second independent observer, at 1st, 10th, 20th, 30th, and 60th postoperative day. results: visual acuity without correction ranged between 20/15 and 20/40. one eye achieved 20/15 (5%), 4 eyes 20/20 (20%), 6 eyes 20/25 (30%), 7 eyes 20/30 (35%) and 2 eyes 20/40 (10%). best corrected visual acuity ranged between 20/15 and 20/40; two eyes with 20/15 (10%), 9 eyes 20/20 (45%), 7 eyes 20/25 (35%), 1 eye 20/30 (5%) and 1 eye 20/40 (5%). it is important to remember that the average spherical refraction was -0.05 sd (ranging from -0.50 to +0.75 sd). the mean cylindrical refraction was -0.63 cd ranging from -0.50 to -1.25 cd. the iol rotation in this study had an average of 3.2o to 30o, ranging from 0o of rotation to a maximum of 13o; 7 lenses (35%) suffered no rotation, 9 lenses (45%) suffered rotation between 1o to 5o, 3 lenses (15%) had rotation between 6o to 10o, and ultimately 1 lens (5%) had rotation between 11o to 15o. there was no significant rotation after the 30th postoperative day. discussion: the average of rotation of the iol was 3.2o, where 95% of iols presented rotation less than or equal to 10o what means a very good rotational stability. in daily practice, a good visual acuity is directly related to iol rotational stability and refractive predictability.
%K astigmatism [surgery]
%K lens implantation
%K intraocular [methods]
%K phacoemulsification
%K cataract extraction
%K visual acuity
%K postoperative complications.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0004-27492009000500007&lng=en&nrm=iso&tlng=en