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首页> 外文期刊>British journal of ophthalmology >Recovery of corneal irregular astigmatism, ocular higher-order aberrations, and contrast sensitivity after discontinuation of overnight orthokeratology.
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Recovery of corneal irregular astigmatism, ocular higher-order aberrations, and contrast sensitivity after discontinuation of overnight orthokeratology.

机译：隔夜角膜塑形镜停用后角膜不规则散光，眼高阶像差和对比敏感度的恢复。

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AIMS: To examine prospectively the recovery of various parameters after discontinuation of overnight orthokeratology. METHODS: Seventeen subjects undergoing orthokeratology for 12 months were examined. Refraction, corneal topography, wavefront aberrometry, a visual acuity test and a contrast sensitivity test were performed at baseline, 12 months after commencement of the procedure, and 1 week and 1 month after discontinuation of the treatment. Asymmetry and higher-order irregularity components were calculated using a Fourier analysis of the corneal topography data. Contrast sensitivity was assessed at four spatial frequencies, and the area under the log contrast sensitivity function (AULCSF) was calculated. RESULTS: Orthokeratology significantly reduced manifest refraction (p<0.0001, Dunnett test) and significantly improved uncorrected visual acuity (UCVA) at 12 months after commencement of the procedure (p<0.0001). Asymmetry and higher-order irregularity components increased significantly (p<0.0001, p= 0.0032, respectively), and third- and fourth-order aberrations also increased significantly (p<0.0001). The treatment resulted in significant decreases in AULCSF (p = 0.0004). After discontinuing lens wear, all parameters, such as refraction, UCVA, asymmetry, higher-order irregularity, third-order aberration, fourth-order aberration and AULCSF, returned to the baseline level at 1 week. CONCLUSION: This study confirmed that the effect of orthokeratology is completely reversible in light of optical quality of the eye and quality of vision as well as refraction and visual acuity.
机译：目的：前瞻性检查隔夜角膜塑形镜停止后各种参数的恢复。方法：对17名接受角膜塑形术治疗12个月的受试者进行了检查。在基线，手术开始后12个月以及治疗终止后1周和1个月进行屈光，角膜地形图，波前像差法，视敏度测试和对比敏感度测试。使用角膜地形图数据的傅立叶分析计算不对称性和高阶不规则分量。在四个空间频率处评估对比敏感度，并计算对数对比敏感度函数（AULCSF）下的面积。结果：角膜塑形术在手术开始后的12个月时显着降低了屈光度（p <0.0001，Dunnett检验），并显着改善了未矫正视力（UCVA）（p <0.0001）。不对称性和高阶不规则性分量显着增加（分别为p <0.0001，p = 0.0032），三阶和四阶像差也显着增加（p <0.0001）。该治疗导致AULCSF显着降低（p = 0.0004）。停止配戴眼镜后，所有参数（例如屈光度，UCVA，不对称性，高阶不规则度，三阶像差，四阶像差和AULCSF）在第1周恢复到基线水平。结论：本研究证实，鉴于眼睛的光学质量和视觉质量以及屈光度和视敏度，角膜塑形术的效果是完全可逆的。

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