Gordon A
J Am Optom Assoc. 1990 Nov;61(11):870-4.
The distribution of refractive error in migrant workers and their families living in Patillas, Puerto Rico was studied. A total of 1,109 patients with an age range of 5-81 years and above was screened using the modified clinical technique. The refractive distribution of the total screened indicated that 10.2 percent had myopia, 17.7 percent had hyperopia and the rest had a combination of other refractive error (astigmatism, anisometropia and emmetropia). Myopia was most frequent in the age group 11-20 years (16.7 percent) and 21-30 years (16.8 percent) and decreased in the younger and older age groups. Frequency of hyperopia increased from age 31-70 years and then decreased thereafter. Hyperopic astigmatism was more common than myopic astigmatism across all age groups.
对居住在波多黎各帕蒂利亚斯的农民工及其家庭成员的屈光不正分布情况进行了研究。采用改良的临床技术对总共1109名年龄在5至81岁及以上的患者进行了筛查。所有被筛查者的屈光分布情况表明，10.2%的人患有近视，17.7%的人患有远视，其余的人则存在其他屈光不正（散光、屈光参差和正视）的组合。近视在11至20岁年龄组（16.7%）和21至30岁年龄组（16.8%）最为常见，在较年轻和较年长的年龄组中有所下降。远视的发生率从31至70岁年龄段开始上升，之后下降。在所有年龄组中，远视散光比近视散光更为常见。
