Diabetic Vitreous Hemorrhage 25 gauge vitrectomy 60 Year old African american female was referred with 9 months of vision loss from a vitreous hemorrhage. She noticed a drop in vision 3 months ago where the vision seemed to go dark. The pre-operative ultrasound suggested a possible combined rhegmatogenous – tractional retinal detachment. There was also a dense cataract present. The video shows the surgery where the cataract is removed with a fragmatome leaving the anterior capsule intact. Toward the end of the surgery, when the macular membranes are being trimmed, the vitrectomy cutter clearly becomes dull and unable to cut and remove the membranes. Switching to a new vitrectomy probe allows safe completion of the surgery. This video illustrates that vitrectomy cutters can dull and recognizing this, switching to a new probe can allow for safe completion of surgery in select difficult cases.