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A non-healthcare professional reported that, during intraocular lens implantation surgery, the trailing haptics was straight down, folding issue and the leading haptics appeared broken.The procedure was completed on the same day.There was no patient contact.
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Additional information was provided in d.9., h.3., h.6.And h.11.The product was returned for analysis and plunger underride was observed.The device was returned loose in the product carton.The lock-out assembly has been removed.Viscoelastic is observed in the device.The plunger has been advanced at the wound guard and is advanced under the iol (intra ocular lens).The iol is advanced into the nozzle entry and is damaged.We are unable to determine the root cause for the reported complaint "trailing haptics straight down, leading haptics broken" plunger underride was observed.Plunger underride may occur: ¿ if the lens has become misaligned in the lens bay during the manufacturing process.¿ due to the use of a non-qualified viscoelastic.Material properties of non-qualified ovds (ophthalmic viscosurgical device) may contribute to underfill, overfill, misfolding of the haptics, or other inconsistent folding outcomes.¿ if inadequate viscoelastic is placed in the device this will cause inadequate coverage of the lens fold path which may cause the lens to advance incorrectly or become ¿stuck¿ in the device allowing the plunger to underride the lens.¿ if the operating room temperature is too high (greater than 23 degree celsius / 73 degree fahrenheit) lens folding consistency is negatively affected, the lens is more adherent and this may inhibit lens advancement.Any of the above listed causes alone, or in combination, may create the reported event.Based on the results from the product history record, the products met release criteria.The manufacturer internal reference number is: (b)(4).
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