Tomey OA-2000 - Hoffer Q Formula

■ 4-2
V : Vertex distance (mm)
= 12
P : Implanted IOL power (D)
a1 : 0.4…※
a2 : 0.1…※
* The Haigis optimized formula uses the registered a0, a1, and
a2 for calculation.
3. Personal A-Constant
62467.0
434.7221






LaACDad
A
(ACD≠0)


62467.0
434.721241.01139.02 






aaaLd
A
(ACD=0)
Where:



z
P
naPnaLznaLzPnazLPnazLP
d



2
100010001000410001000
22
2
2
1000
1
VAREF
AREF
DCZ





r
nc
DC
11000


AREF : Refractive power of eye after surgery (D)
4.1.2 Hoffer
®
Q formula
1. Implanted IOL power (D)
1000
05.0336.1
336.1
05.0
1336






C
RK
CL
P
Where:
Rx
Rx
R
012.01

2. Target Ref. after surgery (D) when wearing glasses
R
R
Rx
012.01
