Tomey AL-4000 User Manual

4-7 䕔 
3. Personal ACD
 
 
05.0
2
13364
2




P
LN
NLNL
ACD
Where
RK
N


1336
AREF
AREF
R
012.01

AREF : Refractive power of eye after surgery (D)
4.1.5 HAIGIS standard formula
1. Implanted IOL power (D)
1000
1000
d
z
na
na
dL
na
P




Where
1000
1
VREF
REF
DCZ



d = a0 + a1䡡ACD + a2䡡L (ACD䍴0)
d =(a0 – 0.241䡡a1) + (a2 + 0.139䡡a1)L(ACD = 0)
a0 = 0.62467A – 72.434
 
RC
nc
DC
11000 

2. Estimated refractive power after surgery (D)
 
 
XXDCYV
XDCY
REF
iol
10001000
10001000



Where
X = d2䞉P + 1000L䞉na - d䞉L䞉P
Y = na(1000䡡na-L䡡P + d䡡P)
na : Aqueous humor and vitreous refractive index
= 1.336

Tomey AL-4000 Specifications

General

Brand	Tomey
Model	AL-4000
Category	Measuring Instruments
Language	English