Postoperative astigmatism

Abstract

With the numerous significant advances in surgical methodology--e.g., microinstrumentation, the operating microscope, the surgical keratometer, and intraocular lenses--that have been developed over the past two decades, both surgeons and patients have become increasingly aware of the final optic result of any surgical intervention. This is especially so since the development of refractive surgery, where good uncorrected vision is frequently the final arbiter of success. We have progressed to the stage where the optic manipulation of the cornea, whether intentional or otherwise, can be understood in terms of a number of variables. These include the preparation and closure of the surgical wound, the choice of suture material, and both intraoperative and postoperative manipulations. Where these have failed and postoperative astigmatism still occurs, a number of surgical procedures are available to reduce the astigmatic error to an acceptable level.

Corneal dioptric power after penetrating keratoplasty.

“…3 The spherical defect after the triple procedure is higher than two dioptres in 33 to 74% of the cases, depending on the series, and errors greater than 10 dioptres have been found. "…”

Effectiveness of Corneal Topography Guided Suture Removal of the Patients with Penetrating Keratoplasty in Astigmatism Treatment

“…6,7 Yapılan çeşitli araştırmalarda keratoplasti girişimi sonrası olgularda ortalama 4-6 D astigmatizma bulunmuş; göz-lük ve kontakt lensi tolere edemeyen, refraktif cerrahi girişim gerektiren yüksek astigmatizma insidansı en az %10 olarak saptanmıştır. 8 Çal-ışmamızda topografi grubunun postoperatif ve sütür alımı sonrası astigmatizma ortalamaları TABLO 4: . Topografi grubunu oluşturan olguların sütür alımı öncesi ve sonrası yüzey asimetri ve yüzey düzenlilik indekslerinin karşılaştırılması.…”

Astigmatismo induzido na cirurgia extracapsular da catarata: acompanhamento a longo prazo

“…O astigmatismo induzido na cirurgia da catarata depende, basicamente, da incisão e da sutura, que atuam sobre a cicatrização da ferida operatória (1)(2) . Considerando-se estudos realizados (3) , pode-se afirmar que:…”

“…Almir Ghiaroni 1 José Belmiro de Castro Moreira 2 Astigmatismo induzido na cirurgia extracapsular da catarata: acompanhamento a longo prazo Objetivo: Estudar o comportamento do astigmatismo induzido a longo prazo em uma série de pacientes submetidos à cirurgia extracapsular da catarata, nos quais foi utilizada incisão límbica posterior superior suturada com pontos separados de mononylon 10-0. Métodos: Foram estudados 38 olhos, de 35 pacientes, sendo 21 do sexo feminino e 14 do sexo masculino, com idades variando entre 47 e 85 anos (média = 70,17 anos).…”