fibrin and Corneal-Perforation

To report the clinical and histopathological results of a novel autologous scaffold grafting, platelet-rich fibrin (PRF) membrane, in cases with descemetocele.. Three patients with severe corneal stromal melting and central descemetocele caused by neurotrophic keratopathy and infective keratitis underwent PRF membrane grafting on the central cornea for the prevention of imminent corneal perforation. After a quiescent 3-month period, penetrating keratoplasty and cataract extraction were performed for visual rehabilitation in 1 patient and host corneal tissue was examined histopathologically.. Pain was significantly relieved, conjunctival inflammation was markedly resolved, and the central descemetocele area became thicker with scar formation in all patients. Histopathological examination revealed fibrosis formation over the descemetocele area without any tissue gap. Newly formed tissue containing irregular corneal lamellae covered the fibrosis formation and accounted for the prevention of perforation.. Temporary PRF membrane grafting may be an alternative intervention to avoid impending corneal perforation in cases with severe descemetocele.

Topics: Aged; Corneal Perforation; Descemet Membrane; Fibrin; Humans; Male; Membranes, Artificial; Middle Aged; Platelet-Rich Plasma; Postoperative Complications; Retrospective Studies; Tissue Scaffolds; Visual Acuity

The combined use of autologous fibrin membrane and the eye platelet-rich plasma (E-PRP) clot could be considered as a new surgical alternative for the closure of corneal perforations.. To evaluate the use of autologous solid platelet-rich plasma in combination with an autologous fibrin membrane as a surgical alternative for wound closure in perforated corneal ulcers.. Both the fibrin membrane and the E-PRP clot were prepared with the patient's own blood just before the operation. Nylon stitches were used to fixate the fibrin membrane to the conjunctiva and then the E-PRP clot was placed over the corneal perforation, underneath the fibrin membrane. A temporal partial tarsorrhaphy was performed at the end of the procedure. We conducted postoperative monitoring for 3 months. SETTING Vissum Corporacion Oftalmologica, Alicante, Spain.. Eleven patients with perforated corneal ulcers.. Surgical alternative for the closure of corneal perforation.. Corneal biomicroscopy, fluorescein test, digital tonometry.. In all cases the corneal perforation was sealed. The fibrin membrane was present over the corneal surface for the first 3 to 5 days and then gradually disappeared. No evidence of infection or inflammation was detected. Digital tonometry confirmed acceptable levels of ocular tonus in all cases from day 2 after the operation. No patients reported pain, discomfort, or other symptoms, and no complications were observed. After 3 months' follow-up, there was no evidence of relapses or perforations. Corneal grafting was eventually performed in 7 of the 11 cases.. The combined use of autologous fibrin membrane and E-PRP clot is a safe and effective surgical alternative for the closure of corneal perforations. This technique can be considered as a temporary measure until the condition of the cornea permits definite intervention.

Topics: Aged; Aged, 80 and over; Biocompatible Materials; Corneal Perforation; Corneal Transplantation; Corneal Ulcer; Female; Fibrin; Fluorescein; Fluorescent Dyes; Humans; Male; Membranes, Artificial; Microscopy, Acoustic; Middle Aged; Pilot Projects; Platelet-Rich Plasma; Predictive Value of Tests; Reoperation; Spain; Suture Techniques; Time Factors; Tonometry, Ocular; Treatment Outcome; Wound Healing; Young Adult