Tomey AL-4000 User Manual

䕔 4-8
nc : Corneal reflective index
= 1.3315
A :A-Constant
RC : Average radius of corneal curvature (mm)
= 䠄r1 + r2䠅/2
DC : Average corneal refractive power (D)
L : Axial length
ACD : Anterior chamber depth (mm)
REF : Desired refractive power after surgery (D)
V : Vertex distance (mm)
= 12
P : Implanted IOL power (D)
a1 :0.4a2 :0.1
* a1 and a2 are default values.
3. Personal A-Constant
62467.0
434.7221 

LaACDad
A
(ACD䍴0)
 
62467.0
434.721241.01139.02 

aaaLd
A
(ACD = 0)
Where
   
 
zP
naPnaLznaLzPnazLPnazLP
d



2
100010001000410001000
22
2
2
1000
1
VAREF
AREF
DCZ



 
r
nc
DC
11000 

AREF : Refractive power of eye after surgery (D)

Tomey AL-4000 Specifications

General

Brand	Tomey
Model	AL-4000
Category	Measuring Instruments
Language	English