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A non-healthcare professional reported during intraocular lens (iol) implant procedure, the surgeon noticed the lens was partially injected, and the incision needed to be enlarged.Additional information was requested and received stating the procedure was completed on same day with no patient harm.
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The associated company specific cartridge and the lens were returned separately in an opened peel pouch inside the lens carton.The lens was positioned incorrectly inside the lens case.Solution was dried on the lens.The optic was broken near one haptic/optic junction and included a full, intact haptic.One side of the optic was folded under, torn, and cracked.The posterior optic surface was cracked near the optic center.The associated company specific cartridge was evaluated.Viscoelastic was observed in the cartridge.The posterior of the cartridge nozzle was cracked, beginning at mid-nozzle and extending into the thinner tip area.A posterior tip aneurysm has formed along this line of damage.The aneurysm enlarged, stretched the cartridge tip material, and has torn inside the aneurysm.The cartridge wings show evidence of being placed into a handpiece.The cartridge was cleaned for further evaluation.Top coat dye stain testing was conducted with acceptable results.A device history record review and a non-conformance review of the reported lot number was conducted.The deviation review did not reveal any potential contributing factors to the reported complaint and all corresponding production release specifications defined in the device master record were met.Qualified associated products were indicated.The root cause cannot be determined for the reported complaint.The used lens and the associated cartridge were returned.The lens was broken, torn, and cracked.The cartridge had nozzle damage that began in the thick wall cone and enlarged into an aneurysm that split as it extended into the thinner tip area.The damage on the posterior of the nozzle started in the thick wall cone area.Unusually high internal forces would be needed to create damage in this area.The two distinct areas of damage would indicate a progressive change that occurred as the lens was advanced.Damage in the thick cone wall section has been associated with the use of cold viscoelastic.The ifu (instructions for use) instructs to use viscoelastic, which has been allowed to come to the operating room temperature.This type of damage may also occur if the lens/plunger are not positioned correctly for advancement.The ifu instructs: using holding forceps, grasp the lens by the optic edge and gently place the lens anterior side up into the back of the ovd (ophthalmic viscosurgical devices) -filled cartridge.The lens should be inserted until the optic is a little more than half-way inside the cartridge.Use the holding forceps to gently push down on the lens, verifying that the lens is on the bottom surface of the cartridge.Using holding forceps, take the trailing haptic, and gently fold the haptic onto the anterior side of the optic.Slowly grip or push the optic edge to position the lens as far into the cartridge as the forceps will permit, while ensuring the lens remains on the bottom surface of the cartridge and the trailing haptic remains on the optic.Failure to follow these steps may cause the lens to advance incorrectly causing delivery issues and/or damage.Important: the plunger should make initial contact with the cartridge at the ramp.In the event the plunger does not contact the cartridge at the ramp, do not use the handpiece and contact company.The handpiece ifu instructs: verify that the plunger tip is properly engaging the lens optic and that the lens moves forward at the same rate as the plunger while slowly advancing the plunger forward to avoid damaging the lens.When the threads on the knob make contact with the barrel, turn the knob clockwise approximately ½ turn to engage the threads and then stop.The iol (intraocular lens) will now be in the dwell position.Inspect to ensure the plunger is behind the optic.The ifu instructs: follow the section regarding directions for use for information on the maximum allowed time for the iol to stay in the folded condition.Failure to adhere to manufacturer¿s recommendations may result in iol damage.Ifu note: during lens loading and insertion, do not allow the company specific iol to remain in a folded condition within the selected iol delivery system for more than 3 minutes prior to completing insertion into the capsular bag.The manufacturer internal reference number is: (b)(4).
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