周边视力控制技术对青少年近视进展的影响

Effect of peripheral vision control technology in the development of juvenile myopia

目的：观察周边视力控制技术对延缓青少年近视进展的有效性。方法：临床病例对照研究。对2012-05/12在嵊州市人民医院眼科就诊的99例198眼近视青少年（12~18岁）按检查时间随机分成两组,观察组为周边视力控制技术组,配戴具有矫正周边视网膜远视离焦功能的特制镜片;对照组配戴普通单焦点镜片。配镜后每3mo复查,必要时更换同类镜片并记录患者的屈光度、角膜曲率、眼轴长度。结果：观察18mo,各组治疗前后近视屈光度、眼轴长度均有不同程度增长。各组治疗前后角膜曲率差异无统计学意义（P〉0.05）;观察组近视增长量为-0.65±0.65D,眼轴增长量为0.23±0.22mm,对照组近视增长量为-1.17±0.50D,眼轴增长量为0.41±0.17mm,两组近视增长量及眼轴增长量比较差异有统计学意义（P〈0.05）。结论：利用周边视力控制技术能有效减缓青少年近视的进展。

AlM：To investigate the effect of peripheral vision control technology for delaying the development of juvenile myopia.METHODS：A total of ninty-nine cases of 12 ~18 year-old myopic patients were randomly divided into two groups. The experimental group was peripheral vision control technology group whose members wore the special lenses which can help correct the hypermetropic defocus of peripheral retina. The other was control group whose members wore ordinary monofocal lenses. All the subjects needed to accept re-examination every 3mo and be recorded the data of dioptre, corneal curvature and axial length.RESULTS： After 18mo, the dioptre and axial length of two groups had increased in varying degree. But the data＇s different quantity of the corneal curvature in each group had no statistical significance （ P 〉0. 05 ）. Themyopia deepen quantity in experimental group was-0. 65±0. 65D and its axial growth was 0. 23±0. 22mm, and the myopia deepen quantity in control group was -1. 17 ± 0. 50D and its axial growth was 0. 41 ± 0. 17mm. Under the circumstance of valid data, the increment of myopia and axial length in experimental group was lower than that in control group （P〈0. 05）.CONCLUSlON： Peripheral vision control technology can delay the development of juvenile myopia effectively.