4-3
4.3 IOL power calculation
4.3.1
SRK-II formula
1. Implanted IOL power for Emmetropization (D)
P
emme
= A1 - 0.9K - 2.5L
2. Implanted IOL power for Ametropization (D)
P
ament
= P
emme
- REF · CR
3. Post surgery expected refractive power (D)
REF
iol
= (P
emme
- P) / CR
Where,
L
<
20.0
→
A1=A+3
20.0
L
<
21.0
→
A1=A+2
21.0
L
<
22.0
→
A1=A+1
22.0
L
<
24.5
→
A1=A
24.5
L
→
A1=A-0.5
P
emme
14
→
CR=1.00
P
emme
>
14
→
CR=1.25
A:
A-constant
K:
Average corneal refractive power (D) = (K1 + K2) / 2
L:
Axial length (mm)
P:
Implanted IOL power (D)
REF: Post surgery desired refractive power
4.3 IOL power calculation
Summary of Contents for UD-600
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