The reference (b)(4) has been allocated to this case by rayner.The event description provided states that immediately following implantation into the eye the centre of the optic was identified to be damaged/scratched.The rao600c iol was explanted and exchanged during the original surgery session without injury to the patient."iol replacement or extraction" is listed in the "adverse events"section of the rayone ifu.The rayone preloaded iol injection system use risk analysis identifies the following as possible causes of "trapped/torn lens haptic/optic during insertion"; inadequate amount of viscoelastic, inadequatequality of viscoelastic, haptic trapped by plunger override due to fast motion, user opens closed flapsand closes again before use, plunger advanced too quickly, insertion of viscoelastic through nozzle leading to inadequate amount of viscoelastic, user removed injector from tray prior to inserting viscoelastic - causing lens to be improperly placed in cartridge, user removes injector from tray prior to closing cartridge - resulting in cartridge not being clipped closed properly and optic edgetrapped/damaged on closure of cartridge.There is insufficient evidence and information available to establish root cause in this case.
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