Tomey AL-100 User Manual

4-10
4.1.7 Shammas-PL
This formula is for POST LASIK.
a. Implanted IOL power (D) for emmentropization
P
emme =
b. Implanted IOL power (D) for ametropia
P
amet =
c. Predicted refractive power after surgery (D)
REF
C iol =
L: Axial length (mm)
C = pACD = (0.5835
x
A) - 64.40
A: A-Constant
Kc = 1.14
x
K - 6.8
K: Average corneal refractive power (D)
= (K1 + K2) /2
r: Radius of corneal curvature (mm)
= 337.5 / K
REFc: Refractive power at corneal refractive surface
=
REF: Desired refractive power after surgery (D)
P: Implanted IOL power (D)
Lc = L-0.1(L-23)
VD: Vertex distance (mm)
= 12
1336
L
-
0.1(L
-
23)
-
(C + 0.05) 1.0125
Kc
1
C + 0.05
1336
-
-
1336
L
-
0.1(L
-
23)
-
(C + 0.05) 1.0125
Kc + REFc
1
C + 0.05
1336
-
-
1.0125
x
1336 [1336
-
P {Lc
-
(C + 0.05)}]
1336
.
Lc
-
P(C + 0.05){Lc
-
(C + 0.05)}
-
Kc
1000
REF
1000
-
VD

Tomey AL-100 Specifications

General

Brand	Tomey
Model	AL-100
Category	Measuring Instruments
Language	English