Brum Graciela Scalco, Antunes-Foschini Rosália Maria Simões, Abbud Christine Mae Morello, Bicas Harley Edison Amaral
Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
Arq Bras Oftalmol. 2011 Jan-Feb;74(1):24-7. doi: 10.1590/s0004-27492011000100006.
To determine the drift variations of the postoperative alignment in patients who underwent strabismus surgery and to identify possible risk factors associated with such occurrence.
We reviewed the variations in postoperative alignment drift of 819 patients who underwent rectus muscle surgery from January, 1995 to December, 2005 at the Hospital de Clínicas da Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo. The patients were divided into four groups according to the type of deviation (alternating esotropia, monocular esotropia, alternating exotropia and monocular exotropia). Changes in eye positioning were quantified in each group.
The prevalence of variations in the postoperative angle (considering variations more than 10 ∆) among the total of studied patients was 33.5% (274 patients). In those patients, a higher frequency was found in the exotropic direction (178 patients or 65.0%) than in the esotropic direction (96 patients or 35,0%), and this difference was statistically significant (chi-square test; p<0.001).
Eye positioning instability can occur over time in patients who underwent strabismus surgery. This incident reinforces the need for the development of alternative therapies in order to provide greater stability to the oculomotor system in the follow-up of strabismus surgery.
确定接受斜视手术患者术后眼位的漂移变化，并识别与此类情况相关的可能危险因素。
我们回顾了1995年1月至2005年12月在圣保罗大学里贝朗普雷图医学院临床医院接受直肌手术的819例患者术后眼位漂移的变化情况。根据斜视类型（交替性内斜视、单眼内斜视、交替性外斜视和单眼外斜视）将患者分为四组。对每组患者的眼位变化进行量化。
在所有研究患者中，术后角度变化（变化超过10∆）的发生率为33.5%（274例患者）。在这些患者中，外斜方向的发生率（178例患者或65.0%）高于内斜方向（96例患者或35.0%），且这种差异具有统计学意义（卡方检验；p<0.001）。
接受斜视手术的患者随着时间推移可能会出现眼位不稳定。这一情况强化了开发替代疗法的必要性，以便在斜视手术的随访中为眼球运动系统提供更高的稳定性。
