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“ Evaluating and Defining the Sharpness of IOLs: Microedge Structure of Commercially Available Square-Edge Hydrophobic IOLs ” Matthias Müller, PhD, 1 Liliana Werner, MD, PhD, 1,2 Manfred Tetz, MD 1 1 Berlin Eye Research Institute (BERI), Berlin, Germany
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Microedge Structure of Commercially Available
Square-Edge Hydrophobic IOLs”
Matthias Müller, PhD,1
Liliana Werner, MD, PhD,1,2
Manfred Tetz, MD1
1 Berlin Eye Research Institute (BERI), Berlin, Germany
2John A. Moran Eye Center, Salt Lake City, UT, USA
-The authors have no financial or proprietary interest in any product mentioned in this poster.
-Supported in part by unrestricted research grants to the BERI from Alcon, AMO, Wavelight, Hoya, and Advanced Vision Science, and by a 2007 Research Grant from the ESCRS (Werner).
-Some of the IOLs described here are not FDA approved.
In vivo LEC: 8-21 μ in diameter (larger lengths)
Area = 281.4 μ2
Reference PMMA lens: 34.0 and 37.5 μ2 (40- and 60-radius circles, respectively);
+20.0 D control silicone lens: 729.3 and 1,525.3 μ2;
+0.0 D control silicone lens: 727.3 and 1,512.7 μ2;
Acrylic IOLs: 69.5 to 338.4 μ2 (40 radius); 122.4 to 524.4 μ2 (60 radius);
Silicone IOLs: 4.8 to 281.4 μ2 (40 radius); 0.2 to 520.4 μ2 (60 radius);
Out of 30 lenses, 7 silicone lenses had area values smaller or in the vicinity of the corresponding values of the reference PMMA IOL (+5.0 Z9002, +20.0 L200, +20.0 SofPort AO, +0.0 and +20.0 SoFlex SE, and +12.5 and +20.0 AQ310Ai);
Acrylic versus silicone lenses:P = 0.0017 for 40- and 60-radius circles (Wilcoxon Two-Sample Test);
+20.0 D versus +0.0 D (or lowest available dioptric power) lenses: P = 0.4419 and P = 0.2616 (NS) for 40- and 60-radius circles.
Examples of square optic edge profile and finishing of hydrophobic acrylic IOLs:
Matrix Acrylic, +0.0 D
SA60AT, +20.0 D
Z9003, +10.0 D
AR40e, +20.0 D
L450, +20.0 D
VA60BB, +0.0 D
IOLs with deviation areas in the vicinity to the cut off limits (or smaller) had similar values for the 40- and the 60-radius circles, while the others had a tendency to present increasing values with the larger radius, mostly as a function of the convexity of their posterior optic surface.
Examples of square optic edge profile and finishing of silicone IOLs:
SoFlex SE, +0.0 D
SofPort AO, +20.0 D
Z9002, +20.0 D
Z9002, +5.0 D
AQ310Ai, +12.5 D
Z9000, +20.0 D
Central PCO = 0