散光视标检查与散光轴位关系的定量推导  

Calculation of astigmatism axis by astigmatic dials test with mathematic method.

作　　者：王小兵[1] 

机构地区：[1]首都医科大学附属北京同仁医院眼科中心,100730

出　　处：《中国斜视与小儿眼科杂志》2008年第2期49-51,I0004,共4页Chinese Journal of Strabismus & Pediatric Ophthalmology

基　　金：国家自然基金(10772124)的支持

摘　　要：目的定量推导散光视标检查与散光轴位之间的关系。方法根据光学和数学的原理,从点光源成像入手,逐步定量地推导被检者对散光视标的辨认结果和散光轴位之间的关系。结果被检者看到的最清晰散光视标的时钟钟点数乘以30°,即为被检者的散光轴位。或者被检者看到的最不清晰的散光视标的时钟钟点数加上3乘以30°,亦为被检者的散光轴位。结论被检者对散光视标辨认结果和散光轴位之间关系的定量推导有助于正确的理解和临床应用。Object To calculate astigmatism axis by astigmatic dials test with mathematic method. Method Based on optical and mathematic principle, the relationship between astigmatic dials test result and astigmatism axis was calculated out as a formula. Result Multiply the clock position of sharpest reported by the patient by 30 degree is the astigmatism axis of the patient. Conclusion This calculation is useful to understand and correctly use the astigmatic dials test.

关 键 词：散光 轴 计算 

分 类 号：R778.2[医药卫生—眼科] R770.421[医药卫生—临床医学]