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人工晶体度数的计算

来源:华人健康网 | 发布时间:2010-09-09 16:27:25 | www.chinesejk.com

  目前,人工晶体屈光度计算一般都用SRKⅡ公式。

  SRKⅡ公式(回归公式)

  P=A-2.5AL-0.9K

  P为植入的人工晶体度数

  A为常数(厂家根据晶体的类型、材料、操作技术设定)

  AL为眼轴长(眼科A超测定,一般为23.5mm左右)

  K为角膜屈率(角膜屈率仪测定,实际为[K ,一般是44左右)。

  现在,眼科A超已设置该计算公式,只要把数据代入,即可得出结果。若用手工计算,则要用回归的方法,即:

  A=A 3, 当 AL<20

  A=A 2, 当20≤AL<21

  A=A 1, 当 21≤AL<22

  A=A, 当 22≤AL<24.5

  A=A-0.5, 当 AL≥24.5

(编辑:阳阳 )

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