Kampitak Kosol, Leelawongtawun Wichai, Leeamornsiri Supinda, Suphachearaphan Wannisa, Thitiwichienlert Suntaree
J Med Assoc Thai. 2016 Jul;99 Suppl 4:S178-81.
Pterygium may induce pressure and distortion on the corneal surface leading to ocular aberrations.
To evaluate higher order aberrations in pterygium eyes.
Thirty-two patients with unilateral primary pterygium were enrolled. Wavefront analysis technique was used to determine the higher order aberrations in pterygium eyes and normal fellow eyes in individuals. Higher order aberration values were compared between both eyes with paired t-test. Pearson correlation was used to assess the correlations of higher order aberration values with pterygium size.
Of the 32 patients, there were 15 males (47%) and 17 females (53%), mean age was 48.9±12.2 years. The average horizontal size of pterygium was 2.6+0.9 millimeters. For pterygium eyes, the mean of coma, trefoil, spherical aberration, and quadrafoil were 0.87±1.01, 1.45±1.55, 0.28±0.27, and 0.79±0.94 micrometers, respectively. And those of normal fellow eyes were 0.46±0.37, 0.80±0.71, 0.15±0.33, and 0.39±0.47 micrometers, respectively. Comparing between pterygium and contralateral normal eyes, a significant difference was present in all parameters (paired t-test, p<0.05). Coma, trefoil, and quadrafoil of pterygium eyes had a significant relationship with pterygium size (Pearson correlation, p<0.05) except for spherical aberration.
The findings suggest that higher order aberrations have a tendency to increase in pterygium eyes compared to contralateral normal eyes, and most have a correlation with pterygium size.
翼状胬肉可能会对角膜表面产生压力并使其变形，从而导致眼部像差。
评估翼状胬肉患者眼睛的高阶像差。
纳入32名单侧原发性翼状胬肉患者。采用波前分析技术测定患者翼状胬肉眼及对侧正常眼的高阶像差。采用配对t检验比较双眼的高阶像差值。采用Pearson相关性分析评估高阶像差值与翼状胬肉大小的相关性。
32例患者中，男性15例（47%），女性17例（53%），平均年龄48.9±12.2岁。翼状胬肉的平均水平大小为2.6+0.9毫米。翼状胬肉眼的彗差、三叶草像差、球差和四叶草像差的平均值分别为0.87±1.01、1.45±1.55、0.28±0.27和0.79±0.94微米。对侧正常眼的相应值分别为0.46±0.37、0.80±0.71、0.15±0.33和0.39±0.47微米。比较翼状胬肉眼和对侧正常眼，所有参数均存在显著差异（配对t检验，p<0.05）。除球差外，翼状胬肉眼的彗差、三叶草像差和四叶草像差与翼状胬肉大小有显著关系（Pearson相关性分析，p<0.05）。
研究结果表明，与对侧正常眼相比，翼状胬肉眼的高阶像差有增加的趋势，且大多数与翼状胬肉大小相关。
