Division of Cornea and Refractive Surgery, Department of Ophthalmology, Erciyes University Medical Faculty, and Department of Ophthalmology, Training and Research Hospital, Kayseri, Turkey.
Cornea. 2012 Dec;31(12):1428-31. doi: 10.1097/ICO.0b013e3182431465.
To investigate the effects of pterygium excision with conjunctival autograft plus corneal polishing on ocular higher-order aberrations (HOAs) and to monitor the changes throughout the first postoperative year.
A total of 18 eyes of 16 patients with primary pterygium who had an indication for surgical excision were included in the study. All patients underwent a detailed ophthalmologic examination preoperatively and at the third and twelfth postoperative months. Pterygium excision with conjunctival autograft plus corneal polishing was performed by the same surgeon (K.G.). Corneal topography and ocular HOAs were measured by NIDEK optical path difference scanning system ARK-10000 refractive power/corneal analyzer.
Root mean square values of total aberrations and total HOAs were found to be significantly decreased both at 3 and 12 months after an uneventful pterygium surgery. Although solely root mean square values of coma and trefoil revealed a statistically significant reduction in the third postoperative month (P=0.043 and P=0.018, respectively), after 1 year, all parameters (total coma: P<0.001; total trefoil: P=0.004; total quatrefoil: P=0.010; and total high astigmatism: P=0.016) except for total spherical aberration (P=0.236) were found to be lower when compared with the preoperative values.
Uneventful pterygium excision with conjunctival autograft plus corneal polishing can significantly reduce most of the pterygium-induced HOAs. Moreover, the reduced postoperative aberrations continue to change beyond the early postoperative period even into the 1-year postoperative period. Therefore, any refractive procedures should be postponed at least 1 year after the pterygium surgery until corneal stability occurs.
研究翼状胬肉切除联合结膜自体移植加角膜抛光术对眼高阶像差（HOAs）的影响，并在术后第一年监测其变化。
本研究共纳入 16 例 18 只眼的原发性翼状胬肉患者，这些患者均有手术切除指征。所有患者术前及术后第 3 个月和第 12 个月均进行详细的眼科检查。由同一位外科医生（K.G.）进行翼状胬肉切除联合结膜自体移植加角膜抛光术。使用 NIDEK 光学路径差扫描系统 ARK-10000 屈光力/角膜分析仪测量角膜地形图和眼高阶像差。
无并发症的翼状胬肉手术后 3 个月和 12 个月时，总像差和总高阶像差的均方根值均明显降低。尽管仅在术后第 3 个月时，总彗差和三叶彗差的均方根值有统计学意义的降低（分别为 P=0.043 和 P=0.018），但在 1 年后，除总球差外（P=0.236），所有参数（总彗差：P<0.001；总三叶彗差：P=0.004；总四叶彗差：P=0.010；总高度散光：P=0.016）与术前值相比均较低。
无并发症的翼状胬肉切除联合结膜自体移植加角膜抛光术可以显著降低大多数由翼状胬肉引起的高阶像差。此外，即使在术后早期之后，降低的术后像差仍会继续发生变化，甚至持续到术后 1 年。因此，任何屈光手术都应至少在翼状胬肉手术后 1 年进行，直到角膜稳定为止。
