Tomey UD-8000 User Manual

4-7 ■
4.1.4 Hoffer Q formula
1. Implanted IOL power (D)
1000
05.0336.1
336.1
05.0
1336
+
−
+
−
−−
=
C
RK
CL
P
Where:
R
x
Rx
R
012.01
−
=
2. Desired refractive power after surgery (D) when wearing
glasses
R
R
Rx
012.01
+
=
Where:
K
C
P
CL
R −
+
+
−
−−
=
1000
05.0
05.0
1336
336.1
336.1
C : Predicted anterior chamber depth after surgery
(ACD)
= X + Y
Where:
X = C1 + 0.3 × (L – 23.5) + (tan K)
2
Y = 0.1M × (23.5 - L)
2
× tan{0.1(G - L)
2
}
- 0.99166
L ≤ 23.0 → M = + 1, G = 28
L > 23.0 → M = - 1, G = 23.5
L > 31.0 → L = 31
L < 18.5 → L = 18.5
P : Implanted IOL power (D)
L : Axial length (mm)
C1 : Personal anterior chamber depth (mm)
K : Average corneal refractive power (D)
= (K1 + K2)/2
r : Radius of corneal curvature (mm)
= {(KI - 1) × 1000}/K

Tomey UD-8000 Specifications

General

Brand	Tomey
Model	UD-8000
Category	Medical Equipment
Language	English