当前位置： SCI文献检索 > ARQUIVOS BRASILEIROS DE OFTALMOLOGIA期刊下所有文献 > Visual performance after toric IOL implantation in patients with corneal astigmatism.

Visual performance after toric IOL implantation in patients with corneal astigmatism.

Abstract：

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 3.2 masculine to 30 masculine, ranging from 0 masculine of rotation to a maximum of 13 masculine; 7 lenses (35%) suffered no rotation, 9 lenses (45%) suffered rotation between 1 masculine to 5 masculine, 3 lenses (15%) had rotation between 6 masculine to 10 masculine, and ultimately 1 lens (5%) had rotation between 11 masculine to 15 masculine. There was no significant rotation after the 30th postoperative day. DISCUSSION:The average of rotation of the IOL was 3.2 masculine, where 95% of IOLs presented rotation less than or equal to 10 masculine what means a very good rotational stability. In daily practice, a good visual acuity is directly related to IOL rotational stability and refractive predictability.

journal_name

Arq Bras Oftalmol

journal_title

Arquivos brasileiros de oftalmologia

authors

Correia RJ,Moreira H,Netto SU,Pantaleão GR

doi

10.1590/s0004-27492009000500007

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

636-40

issue

eissn

0004-2749

issn

1678-2925

pii

S0004-27492009000500007

journal_volume

pub_type

临床试验,杂志文章

在线工具

Visual performance after toric IOL implantation in patients with corneal astigmatism.