Rayner Intraocular Lenses Limited (Rayner), the leading intraocular lens (IOL) pioneer has introduced *RaySert®, a small-incision IOL injector system. With a 1.8-mm diameter external tip, RaySert® enables surgeons to insert an IOL through a sub-2.5-mm incision, reducing surgically induced astigmatism.
Injectable IOL BiomaterialAll Rayner injectable lenses are manufactured from Rayacryl®, Rayner’s own proprietary hydrophilic acrylic co-polymer of 2-hydroxy ethyl methacrylate (HEMA) and methyl methacrylate (MMA) with ethylene glycol dimethacrylate (EGDMA) as cross-linking agent. |
Rayacryl® hydrophilic acrylic 5% silicone oil adherence |
Acrysof® hydrophobic acrylic 35% adherence
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The Amon-Apple Enhanced Square Edge is a unique Rayner design (patent pending) which reduces Posterior Capsular Opacification (PCO) by creating an insurmountable physical barrier to cell migration. Photo is courtesy of David J Apple MD, an SEM study of the fine surface finish on the haptic-optic junction of a Rayacryl® lens with the new edge.
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Anti-Vaulting Haptic TechnologyOnly Rayner injectable IOLs incorporate AVH Technology® to give unsurpassed clinical results. |
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Anti-Vaulting Haptic TechnologyOnly Rayner injectable IOLs incorporate AVH Technology® to give unsurpassed clinical results. |
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The uncompromising stability resulting from AVH Technology® gives:
The outer haptics begin to take up the compression due to post-operative capsular contraction with a progressive resistance to the contractual forces being generated within the capsular bag.
The outer haptics engage the inner haptics and new bending fulcra are created. This altered haptic configuration assumes less flexibility which is calculated to generate centration forces within the IOL.
The haptic tips gently meet the IOL optic and are effectively locked into position. The IOL forms an oval configuration and is well able to withstand excessive and / or asymmetrical capsular contraction whilst maintaining perfect centration.
At all times, the graph should show a positive gradient. A negative gradient indicates that the lens may be twisting, buckling or vaulting.
Only the Rayner C-flex®, Superflex®, T-flex®, M-flex® and M-flex®T IOLs have compression graphs with constant positive gradients clearly demonstrating a superior stability.
Chart 1 – Compression characteristics of C-flex® in water at 35°C
Chart 1 demonstrates the ideal compression characteristic and accurately describes the performance of the Rayner C-flex® IOL. It clearly demonstrates the progressive nature of the haptic compression and the rate change as the outer haptic node contacts the inner haptic face at 10.0mm and locks. This allows the haptics to continue resisting the capsular contraction whilst maintaining IOL centration and planar stability.
Chart 2 – Compression characteristics of 4 currently available competitive IOLs in water at 35°C
Lens “A”
Demonstrates no axial displacement until at 10.25mm diameter, when the optic displaces posteriorly by approximately 2 mm and the haptics buckle.
Lenses “B”, “C” and “D”
Demonstrates the inability of each lens to resist capsular contraction, in every case resulting in instability.
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Watch the Rayner Injector Loading Video |
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Read more about the Rayner Aspheric IOLs |
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Read more about the Rayacryl® IOL Material |
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Read more about the Rayner Aspheric IOLs |
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Read more about Silicone Oil |
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Read more about the Enhanced Square Edge |
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Read more about the Rayner T-flex® toric IOL |
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Do You Suffer From Dry Eye? |
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Souffrez-vous du syndrome de l'oeil sec? |
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Read more about the I-Drop® |
