基于标准局部一致性干扰测量和基于Scheimpflug的生物仪之间的眼内透镜功率计算的比较:透镜恒定优化的重要性
Sara Sardari1,2, Mehdi Khabazkhoob3, Ebrahim Jafarzadehpur4
1Research and Technology Deputy, Tehran University of Medical Sciences, Tehran, Iran.
Journal of current ophthalmology
|September 8, 2023
概括
IOL Master 500和Pentacam AXL显示了不可互换的眼内透镜 (IOL) 功率计算,尽管平均值差异很小. 广泛的协议限制需要优化Pentacam AXL的镜头常数,以便准确地预测IOL功率.
科学领域:
- 眼科医生 眼科 眼科
- 生物医学光学 生物医学光学
- 光学工程是指光学工程.
背景情况:
- 精确的眼内镜 (IOL) 功率计算对于在白内障手术后实现目标视觉结果至关重要.
- IOL Master 500和Pentacam AXL是用于生物识别和IOL功率计算的现代设备.
- 对比不同生物识别器件和配方的性能对于临床实践至关重要.
研究的目的:
- 使用四种常见公式 (Haigis,Hoffer Q,Holladay 1,SRK/T) 将眼内镜 (IOL) 的功率计算与IOL Master 500和Pentacam AXL进行比较.
- 为了评估两种设备在不同镜头状态之间的一致性.
主要方法:
- 一项涉及1865名60岁以上德黑兰受试者的右眼的横截面研究.
- 使用IOL Master 500和Pentacam AXL进行了生物识别测量和IOL功率计算,使用模式的随机顺序.
- 所有计算都使用了针对Alcon SA60AT镜头的优化ULIB常数和透的目标折射.
主要成果:
- 在所有四种配方中,Pentacam AXL始终计算出比IOL Master 500更高的IOL功率值.
- 平均差异在 -0.33 到 -0.51 D 之间,一致性极限为 95% (例如,Haigis 的 -1.35 到 0.33 D).
- 协议在正常镜头中是最好的,差异与轴长,角质量测量和前腔深度有显著的相关性,角质量测量是最强的预测因素.
结论:
- 虽然IOL Master 500和Pentacam AXL之间的IOL功率的平均差异可能不是临床上显著的,但由于广泛的协议限制,他们的结果是不可互换的.
- 海吉斯配方显示了设备之间特别广泛的协议限制.
- 建议优化Pentacam AXL的镜头常数,以提高IOL Master 500的精度和可互换性.
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