Tomey UD-800 User Manual

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4.1.4 SRK-II formula
1. Implanted IOL power (D) for emmentropization
LKAPemme 5.29.01 
2. Implanted IOL power (D) for ametropia
CRREFPP emmeamet 
3. Predicted refractive power after surgery (D)
 
CRPPREF emmeiol /
Where:
L<20.0 → A1 = A +3
20.0≦L < 21.0 → A1 = A +2
21.0≦L < 22.0 → A1 = A +1
22.0≦L < 24.5 → A1 = A
24.5≦L → A1 = A – 0.5
emmeP
≦14 -> CR = 1.00
emmeP
> 14 -> CR = 1.25
A : A-Constant
K : Average corneal refractive power (D)
= (K1 + K2)/2
r : Radius of corneal curvature (mm)
= {(KI - 1) × 1000}/K
KI : Cornea equivalent refractive index
L : Axial length (mm)
P : Implanted IOL power (D)
REF : Target Ref. after surgery

Tomey UD-800 Specifications

General

Brand	Tomey
Model	UD-800
Category	Measuring Instruments
Language	English