HOYA® iSert® 254 and 255
The proven Aspheric Balanced Curve™ (ABC) design provides patients with a sharp visual image and the square edge of the lens helps to minimize posterior capsule opacification.
Specifications
Preloaded, Monoblock, Aspheric, Blue Light Absorbing IOL (254), UV-absorbing IOL (255)
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Attribute
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Value
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Optic material
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Hydrophobic Acrylic
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Optic design
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Aspheric
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Manufacturing
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Lathe-cut and pad polished
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Haptic material
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Hydrophobic acrylic with blue PMMA chemically bonded haptics tips
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Haptic Configuration
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Modified-C loop
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Diameter (optic/OAL)
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6.0 mm/12.5 mm
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Power
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+6.0 to +30.0 D (0.5 D steps)
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Injector
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iSert® Preloaded IOL System
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Front injector tip outer diameter
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1.78mm
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Nominal A-constant
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118.4
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Optimized constants
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Haigis a0 = -0.542 a1 = 0.161 a2 = 0.204
Hoffer Q pACD = 5.30
Holladay 1 sf = 1.52
SRK/T A = 118.5
SRK II A = 118.8
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The mentioned A-Constant is presented as a guideline only for lens power calculations. It is recommended that the A-Constant measurement be customized based on the surgeon’s experience and measuring equipment.
Optimized Optical constants Source: http://ocusoft.de/ulib/c1.htm (as of Oct. 31, 2016)
