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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 optic was observed to be cracked.The lens was explanted through an enlarged incision and exchanged within the original surgery session.There was no harm or injury to the patient."iol replacement or extraction" is listed in the "adverse events" section of the rayone ifu.The device has not been returned to rayner.The rayone hydrophilic acrylic iol use risk matrix identifies the following as possible causes of "physical damage to iol"; sharp edge instruments used during surgical procedure, surgical procedure: incorrect use of lens injection system, surgeon misidentifying posterior capsule creasing, lens surface ablated by nd: yag operator error and cracked optic surface post injection due to dehydration of lens.Additionally, the rayone preloaded iol injection system use risk matrix identifies forcing a blocked injector, inadequate lubrication, misuse of device and optic edge trapped/damaged on closure of cartridge as possible causes of lens optic damage.Our review of production records for the rayone aspheric rao600c batch 075277050 showed that all manufacturing and quality checks were conducted with successful results.A review of vigilance data confirms this is an isolated event.No other incidents, of any type, have been received against the rayone aspheric rao600c batch 075277050.Without the ability to examine the device and without clear event details being provided it is not possible to determine the root cause of the event.
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