背光区直径对角膜形态的影响与orthokeratology镜头
1Department of Ophthalmology, The Second People's Hospital of Zhengzhou, Zhengzhou 450006, China.
概括
带有较小背光区直径 (BOZD) 的正视镜头导致更快的角膜重塑和更大的最大相对角膜折射功率 (mRCRP). 这可以通过减少眼睛轴长度延长来改善近视控制.
科学领域:
- 眼科医生 眼科 眼科
- 视光学测量 视光学测量 视光学测量
- 角膜生理学 角膜生理学
背景情况:
- 正视眼镜 (OK) 镜片用于通过重塑角膜来纠正近视.
- 后光区直径 (BOZD) 是OK镜头设计中的一个关键参数.
- 了解BOZD如何影响角膜形态对于优化近视控制至关重要.
研究的目的:
- 为了比较戴有不同背光区直径 (BOZD) 的视角镜片后的角膜形态变化.
- 评估BOZD对角膜顶峰功率 (ACP),最大相对角膜折射功率 (mRCRP) 和治疗区域直径 (TZD) 的影响.
主要方法:
- 对133名近视儿童穿着触角设计OK镜头 (角膜折射疗法,CRT) 的回顾性分析.
- 参与者被分为5.0毫米和6.0毫米的BOZD组.
- 角膜拓在基线,1天,1周和1个月的镜头佩戴后进行了分析.
主要成果:
- 在BOZD组之间,在1天或1周的ACP变化比率中没有显著差异.
- 一个月后,在5.0毫米BOZD组中观察到明显更大的ACP变化比率 (P < 0.001).
- 5.0毫米BOZD组在1个月后显示出较高的mRCRP (P < 0.05) 和较小的TZD (P < 0.001).
结论:
- 更小的BOZD OK镜头可以促进更快的角膜成型和更大的mRCRP.
- 一个较小的BOZD可以通过潜在地减缓眼睛轴延长来增强近视控制.
- 镜头参数,包括BOZD,影响处理区直径.
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