Title: Clinical results of orthokeratology therapy in adolescents with low to moderate myopia.
Abstract: To observe the clinical results of orthokeratology therapy in adolescents with low to moderate myopia after wearing the lens for 6 months.The data of 69 adolescents with low to moderate myopia were retrospectively analyzed. According to the degree of spherical power before treatment, the adolescents were divided into a low myopia group (34 cases, with spherical diopter from -3.00 to -0.75 D) and a moderate myopia group (35 cases, with spherical diopter from -5.75 to -3.25 D). The changes of the uncorrected distance visual acuity (UDVA), intraocular pressure, count of endothelial cell, eye axis length, Strehl ratio (SR), modulation transfer function (MTF), Q value, and wavefront aberrations before the treatment and 6 months after the treatment were compared and analyzed between the 2 groups.Compared with before the treatment, the UDVA improved significantly in the 2 groups (both P<0.05); the intraocular pressure and the count of endothelial cell did not change obviously in the 2 groups (all P>0.05), the eye axial length in the 2 groups was increased significantly (both P<0.05), but there was no significant difference between the 2 groups (all P>0.05); the Q value in the 2 groups was increased significantly, and the change was more obvious for the moderate myopia group (all P<0.05); the SR and MTF were increased remarkably in the 2 groups (all P<0.05), and there were no significant difference in the changes of SR and MTF between the 2 groups (both P>0.05); a considerable decrement was found for the total aberration, the total low-order aberration, and defocus (all P<0.05), and the changes were more significant in the moderate myopia group (all P<0.05); the total high-order aberrations were increased in the low myopia group (P<0.05); the increment of the vertical astigmatism, spherical aberration, horizontal coma, vertical coma, and horizontal trefoil were noticeable (all P<0.05), and the changes of the spherical aberration, vertical coma, and horizontal trefoil were more obvious in the moderate myopia group (all P<0.05).Orthokeratology can effectively improve the visual results of the adolescents with low to moderate myopia, and the corrective effect is more obvious for the adolescents with moderate myopia than those with low myopia.目的: 观察青少年低中度近视患者夜戴角膜塑形镜6个月后的临床效果。方法: 回顾性分析69例青少年低中度近视患者的病例资料。根据戴镜前球镜度数分为低度近视组(34例,球镜度数为-3.00~-0.75 D)和中度近视组(35例,球镜度数为-5.75~-3.25 D)。比较两组患者戴镜前和戴镜6个月后的裸眼视力(uncorrected distance visual acuity,UDVA)、眼压、角膜内皮细胞计数、眼轴、斯特列尔比(Strehl ratio,SR)、调制传递函数(modulation transfer function,MTF)、Q值和波前像差的变化。结果: 两组患者的UDVA与戴镜前相比均明显提高(均P<0.05);两组患者的眼压、角膜内皮细胞计数较戴镜前均无显著变化(均P>0.05);眼轴较戴镜前均显著增加(均P<0.05),但两组之间差异均无统计学意义(均P>0.05);两组患者的Q值较戴镜前均显著增加,且中度近视组更明显(均P<0.05);两组患者SR和MTF较戴镜前均明显增加(均P<0.05),但两组之间差异均无统计学意义(均P>0.05);两组患者的总像差、总低阶像差、离焦较戴镜前均减小(均P<0.05),中度近视组的变化较低度近视组更显著(均P<0.01);低度近视组患者的总高阶像差较戴镜前显著增加(P<0.05);两组患者的垂直散光、球差、水平彗差、垂直彗差和水平三叶草较戴镜前均显著增加(均P<0.05),且中度近视组的球差、垂直彗差和水平三叶草的变化更显著(均P<0.05)。结论: 角膜塑形镜在青少年低中度近视患者中可取得良好的近视矫正效果,对中度近视的矫正效果要稍优于低度近视。.
Publication Year: 2020
Publication Date: 2020-08-28
Language: en
Type: article
Indexed In: ['pubmed']
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