4-13
4.3.6
SRK (SHOWA)
1. Implanted IOL power (D)
L
<
22.0 : P=A-2.5L-0.9K+1.4-1.45REF
22.0
L
<
24.5 : P=A-2.5L-0.9K-1.67REF
24.5
L
<
27.0 : P=A-2.5L-0.9K+0.71-1.25REF
27.0
L
: P=A-2.5L-0.9K-1.69REF-1.69
2. Post surgery expected refractive power (D)
L
<
22.0 : R=(A-2.5L-0.9K+1.4-P)/1.45
22.0
L
<
24.5 : R=(A-2.5L-0.9K-P)/1.67
24.5
L
<
27.0 : R=(A-2.5L-0.9K+0.71-P)/1.25
27.0
L
: R=(A-2.5L-0.9K-1.69-P)/1.69
3. Personal A-constant
L
<
22.0 : A=P+2.5L+0.9K-1.4+1.45AREF
22.0
L
<
24.5 : A=P+2.5L+0.9K+1.67AREF
24.5
L
<
27.0 : A=P+2.5L+0.9K-0.71+1.25AREF
27.0
L
: A=P+2.5L+0.9K+1.1.69
L:
Axial length (mm)
K:
Average corneal refractive power (D)
REF: Post surgery expected refractive power (D)
A:
A-constant
P:
Implanted IOL power (D)
AREF: Post surgery refractive power (D)
4.3 IOL power calculation
Summary of Contents for UD-600
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Page 260: ...A 4 INDEX...
Page 262: ...0123 ID 0608...