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A non-healthcare professional reported during intraocular lens (iol) implant procedure, the surgeon noticed the haptic back was bent inside of loading device and misloaded, unusable.Additional information was requested and received stating that the lens was started but stopped and removed before complete insertion in the eye and was replaced with same model and diopter company lens.There was no patient harm.
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Additional information was provided in h.3., h.6., and h.11.The product was returned for analysis, and the reported complaint 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 almost to the wound guard and is advanced over the iol (intraocular lens).The iol is advanced between the mid nozzle and the wound guard and the trailing haptic is damaged.We are unable to determine the root cause for the reported complaint "back haptic was bent inside of loading device and misloaded".Plunger override was observed.Plunger override 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 visco surgical 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 override the lens.If the operating room temperature is too high (more 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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